Индуктивный абсолютный преобразователь угловых перемещений

Изобретение относится к измерительной технике, в частности, к высокоточным абсолютным измерениям угловых перемещений. Индуктивный абсолютный преобразователь угловых перемещений содержит две кольцевые пластины статора и ротора, на которых расположены планарные взаимно перекрывающиеся обмотки шкалы точного и шкалы грубого отсчета, образованные токопроводящими дорожками, а также электронный блок. На пластине статора расположена передающая обмотка, состоящая из дугообразных проводников, две сдвинутые друг относительно друга на 1/4 Т-период шкалы точного отсчета идентичные приемные обмотки шкалы точного отсчета, состоящие из периодически расположенных попарно встречно включенных индуктивных элементов и 2n-приемных обмоток шкалы грубого отсчета. При этом шкала грубого отсчета ротора преобразователя разбита на две подшкалы: разрядности (n-1) и разрядности 1 с периодом равным Т-период шкалы точного отсчета, приемные обмотки статора шкалы грубого отсчета разрядности 1 выполнены из расположенных ...

Устройство для измерения угла вращения

Изобретение относится к области измерительной и информационной техники. Техническим результатом заявляемого изобретения является упрощение процедуры измерения угла вращения. Технический результат достигается тем, что в устройство для измерения угла вращения, содержащее исследуемый объект, источник излучения и частотомер, введены первый и второй блоки питания, преобразователь вращения в электрический сигнал, включающий в себя сельсин-датчик и сельсин-приемник, преобразователь напряжения, в качестве источника излучения используется микроволновой генератор с варакторной перестройкой частоты, причем вход преобразователя вращения в электрический сигнал подключен к первому блоку питания, выход преобразователя вращения в электрический сигнал через преобразователь напряжения соединен с варактором микроволнового генератора с варакторной перестройкой частоты, вход питания микроволнового генератора подключен к второму блоку питания, выход микроволнового генератора соединен с входом частотомера, ротор ...

Устройство для измерения угла положения и линейного перемещения контролируемого объекта

Изобретение относится к области измерительной техники и может найти применение для измерения угла положения и линейных перемещений подвижных элементов летательных аппаратов, транспортных объектов и кораблей. Технический результат - повышение надежности формирования стабилизированных напряжений для питания потенциометрического датчика и увеличение достоверности результатов измерений. Устройство содержит два идентичных соединенных параллельно между собой канала, основной и резервный, в которых производится формирование стабилизированных напряжений для питания потенциометрического датчика и измерение сигнала, пропорционального угловому положению и линейному перемещению контролируемого объекта. Основной и резервный каналы идентичны по своей структуре и содержат источник опорного напряжения, к выходу которого подключены вход микросхемы контроллера идеального диода и исток полевого транзистора. Выходы основного и резервного каналов подключены к одному из крайних выводов потенциометрического датчика ...

Устройство для измерения угловых отклонений ствола танковой пушки

Полезная модель относится к средствам измерения, в частности - к устройствам для измерения угловых отклонений ствола танковой пушки. Технический результат полезной модели заключается в обеспечении возможности создания устройства для измерения угловых отклонений ствола танковой пушки, повышающего точность прицеливания со снижением временных затрат при этом, оказывающих положительное влияние на живучесть танка в целом. Указанный технический результат достигается за счет того, что устройство для измерения угловых отклонений ствола танковой пушки, содержащее датчик измерения угловых отклонений и дисплей с элементами питания, отличающееся тем, что датчик измерения угловых отклонений привинчен к магнитному основанию, выполненному с возможностью обеспечения надежного крепления к казеннику танковой пушки, на магнитном основании впрессован держатель, выполненный в виде продолговатой стойки изогнутой формы, оконечность которой выполнена в виде полусферического выступа, соединяющегося с корпусом дисплея ...

ЕМКОСТНЫЙ ДИФФЕРЕНЦИАЛЬНЫЙ ДАТЧИК УГЛА ПОВОРОТА ВАЛА

Полезная модель относится к измерительной технике и может быть использована для измерения угла поворота вала механического устройства.Емкости датчика выполнены в виде токопроводящих пластин на диэлектрических дисках двух статоров, содержащих по две пластины, выполненные в форме секторов из токопроводящего материала и соединенных с выводами для подключения к измерительной схеме. Оба статора расположены неподвижно в корпусе датчика. Ротор жестко связан с поворотным валом и расположен соосно со статорами так, что при повороте вала в ту или другую сторону, одни емкости увеличиваются, а другие уменьшаются. Ротор выполнен в виде диска из двухстороннего фольгированного диэлектрика, на обеих сторонах которого выполнены токопроводящие пластины из фольги в форме сектора, соединенные между собой перемычкой и обращенные в сторону двух неподвижных статоров.Технический результат, достигаемый при реализации заявленного решения, состоит в повышении крутизны выходной характеристики датчика, достигаемой за счет использования развязывающего конденсатора. 5 ил. Ц 1 173573 ко РОССИЙСКАЯ ФЕДЕРАЦИЯ (19) ФЕДЕРАЛЬНАЯ СЛУЖБА ПО ИНТЕЛЛЕКТУАЛЬНОЙ СОБСТВЕННОСТИ п РЦ ‘’ (50) МПК СО1В 7/30 (2006.01) 2 зе) ил тех а (12) ОПИСАНИЕ ПОЛЕЗНОЙ МОДЕЛИ К ПАТЕНТУ (21)(22) Заявка: 2017107938, 10.03.2017 (24) Дата начала отсчета срока действия патента: 10.03.2017 Дата регистрации: 31.08.2017 Приоритет(ы): (22) Дата подачи заявки: 10.03.2017 (45) Опубликовано: 31.08.2017 Бюл. № 25 Адрес для переписки: 634050, г. Томск, пр. Кирова, 56в, АО "НПЦ "Полюс" (72) Автор(ы): Малофиенко Сергей Григорьевич (КО), Надымова Юлия Владимировна (КП), Подлевский Николай Иванович (КП) (73) Патентообладатель(и): Акционерное общество "Научно-производственный центр "Полюс" (КИ) (56) Список документов, цитированных в отчете о поиске: КП 145255 Ц1, 10.09.2014. КО 2378618 С2,10.01.2010. 50 1599644 АТ, 15.10.1990. 0$ 9303971 В1, 05.04.2016. (54) ЕМКОСТНЫЙ ДИФФЕРЕНЦИАЛЬНЫЙ ДАТЧИК УГЛА ПОВОРОТА ВАЛА (57) Реферат: Полезная модель ...

Устройство для измерения угловых перемещений

Полезная модель относится к области измерительной техники и может быть использована для измерения и контроля параметров движения подвижного состава, в частности вагонов метро. Устройство содержит плату обработки с двумя постоянными магнитами и магниточувствительный элемент, расположенный между постоянными магнитами, подвижный модуль и магнитный преобразователь, установленный на корпусе с возможностью взаимодействия с подвижным модулем. Последний выполнен в виде полого цилиндра из немагнитного материала, на наружной поверхности которого установлены 22-28 стальных стержней диаметром 5-7 мм, и снабжен штоком для установки в отверстие колесной пары, при этом корпус выполнен с защитным покрытием толщиной 70÷90 мкм, а соединительный кабель снабжен влагозащитной оболочкой. Техническим результатом при использовании предлагаемой полезной модели является повышение надежности и долговечности в условиях повышенных динамических и климатических нагрузок. 4 ил.

Датчик угла поворота

Полезная модель относится к контрольно-измерительной технике. Технический результат заявляемого решения – повышение помехозащищённости и надёжности при эксплуатации датчика угла поворота. Датчик угла поворота содержит корпус с элементами крепления, снабженный цилиндрическим выступом, с размещённой в центральной части корпуса в шарикоподшипниках осью вращения. В верхней части оси вращения при помощи позиционирующей детали из диамагнитного материала закреплена система из двух прямоугольных магнитов, размещенная внутри кольца из ферромагнитного материала с геометрическим центром в месте расположения чувствительного элемента, спозиционированного связанной с неподвижным корпусом корпусной деталью с закреплённой на ней печатной платой, зафиксированной герметизирующим составом внутри корпуса. Система в виде двух прямоугольных магнитов закреплена соосно с чувствительным элементом. 1 ил.

ФОТОЭЛЕКТРИЧЕСКИЙ ПРЕОБРАЗОВАТЕЛЬ УГЛА

Полезная модель относится к автоматике и вычислительной технике, в частности к аналого-цифровым преобразователям угловых положений вала в цифровой код для осуществления управления им. Фотоэлектрический преобразователь угла содержит корпус 1, шарикоподшипники 2, фланец 10, кодируемый вал 3, измерительный диск 7 и плату обработки 8 с излучателем и фотоприемником в виде единого модуля 9. Фланец 10 присоединен к корпусу 1, снабжен цилиндрическим выступом 11, выполненным в плоскости шарикоподшипников 2 и имеющим опорное основание 12 с базовой поверхностью 13. Вал 3 с кольцевой проточкой 4 выполнен с цилиндрическим выступом 5 с торцевой базовой поверхностью 6, расположенным в проточке 4. Диск 7 закреплен на поверхности 6. Шарикоподшипники 2 размещены коаксиально диску 7. Плата 8 с модулем 9 закреплена на поверхности 13 и модуль 9 имеет возможность взаимодействия с диском 7, который расположен между поверхностью 6 и поверхностью 13. Диск 7 и плата 8 с модулем 9 расположены в проточке 4. Поверхность ...

Индуктивный датчик углового положения

Полезная модель относится к электротехнике, в частности к устройствам измерения углового положения, основанным на изменении индуктивности. Техническим результатом является абсолютная зависимость выходного сигнала индуктивного датчика углового положения от углового положения объекта измерения. Индуктивный датчик углового положения состоит из статора, содержащего неподвижную пластину в виде круглой многослойной печатной платы, на которой расположены катушка – генератор электромагнитного поля, катушка – приемник электромагнитного поля, катушка опорного сигнала, блок генерации и обработки сигналов, и ротора, содержащего измерительную пластину. Катушка – генератор электромагнитного поля, катушка – приемник электромагнитного поля, катушка опорного сигнала выполнены печатным проводником в виде одинаковых многовитковых спиралей, расположенных соосно. Катушка – приемник электромагнитного поля, блок генерации и обработки сигналов размещены на внешних слоях печатной платы. Катушка – генератор электромагнитного ...

ПОЛУМУФТА ДАТЧИКА УГЛА ПОВОРОТА ДЛЯ ИСПОЛЬЗОВАНИЯ В СЦЕПЛЕНИИ С ПАЛЬЦЕМ БУКСОВОГО УЗЛА

Полезная модель относится к полумуфте датчика угла поворота, устанавливаемой на буксы колесных пар железнодорожного транспортного средства, и может быть использована в составе изделий для измерения и/или контроля угла поворота оси колесной пары и преобразования его в дискретные электрические сигналы, используемые в измерительных системах, контролирующих направление движения, измеряющих пройденный путь, скорость и ускорение железнодорожного транспорта. Полумуфта датчика угла поворота изготовлена из алюминиевого сплава, на пазы которой установлены демпфирующие прокладки из резиновой смеси, при этом демпфирующие прокладки имеют U-образную форму, по внешнему краю которых выполнен паз Т-образного профиля. Достигаемый технический результат - увеличение срока службы и повышение надежности работы за счет снижения воздействия пальца буксового узла и полумуфты друг на друга.

Дифференциальный емкостной датчик ограниченного угла поворота вала

Полезная модель относится к измерительной технике и может быть использована для измерения углов поворота механических устройств с ограниченного угла поворота вала.Сущность: датчик содержит соосно установленные с зазором и неподвижно закрепленные в корпусе две параллельные пластины статора, между которыми помещен сегментный ротор из диэлектрического материала, жестко закрепленный на вращающемся валу, и преобразователь «емкость-угол». Статор содержит несколько дифференциальных емкостных измерительных пар, равномерно размещенных на неподвижном статоре. Преобразователь «емкость-угол» содержит дифференциальный емкостной элемент, преобразователь «емкость-напряжение» с встроенным генератором опорного напряжения, управляющий микроконтроллер с встроенным АЦП и каналом обмена UART, и драйвер последовательного канала RS-485.Техническим результатом при реализации заявленного решения повышение линейности и точности достигается за счет усреднения данных нескольких дифференциальных емкостных измерительных ...

ЕМКОСТНЫЙ ДИФФЕРЕНЦИАЛЬНЫЙ ДАТЧИК УГЛА ПОВОРОТА ВАЛА

Полезная модель относится к измерительной технике и может быть использована для измерения угла поворота вала механического устройства.Сущность заявленного решения заключается в том, что двухполюсный источник питания постоянного тока своими полюсами связан с шинами питания схемы обработки сигнала, двух логических элементов НЕ и R-S триггера, прямой выход которого связан со входом первого элемента НЕ, выход которого связан со входом второго элемента НЕ, выход которого через резистор R2 связан со входом триггера R и анодом диода VD2, катод которого связан с выходом второго элемента НЕ, а выход первого элемента НЕ через резистор R1 связан со входом триггера S и анодом диода VD1, катод которого связан с выходом первого элемента НЕ, при этом входы триггера S и R связаны, соответственно, с секторами токопроводящих пластин первого статора, а кольцевая пластина второго статора связана с минусовой шиной питания двухполюсного источника и инверсный выход R-S триггера связан со входом схемы обработки сигнала.Технический результат при реализации заявленного решения заключается в повышение крутизны выходной характеристики сигнала и достигается за счет включения емкостей датчика, создаваемых токопроводящими пластинами статора и ротора, в схему генератора, реализованного на основе R-S триггера. 2 ил. РОССИЙСКАЯ ФЕДЕРАЦИЯ (19) RU (11) (13) 200 279 U1 (51) МПК G01B 7/30 (2006.01) ФЕДЕРАЛЬНАЯ СЛУЖБА ПО ИНТЕЛЛЕКТУАЛЬНОЙ СОБСТВЕННОСТИ (12) ОПИСАНИЕ ПОЛЕЗНОЙ МОДЕЛИ К ПАТЕНТУ (52) СПК G01B 7/30 (2020.05) (21)(22) Заявка: 2020118644, 27.05.2020 (24) Дата начала отсчета срока действия патента: (73) Патентообладатель(и): Акционерное общество "Научно-производственный центр "Полюс" (RU) Дата регистрации: 15.10.2020 (45) Опубликовано: 15.10.2020 Бюл. № 29 2 0 0 2 7 9 R U (54) ЕМКОСТНЫЙ ДИФФЕРЕНЦИАЛЬНЫЙ ДАТЧИК УГЛА ПОВОРОТА ВАЛА (57) Реферат: Полезная модель относится к измерительной триггера S и анодом диода VD1, катод которого технике и может быть использована для связан с выходом первого ...

Датчик положения ротора

Изобретение относится к электротехнике, а именно к измерительной технике, и может быть использовано для высокоточных измерений угловых перемещений различных поворотных устройств. Технический результат заключается в обеспечении взаимозаменяемости датчика положения ротора с каналами подключения аналоговых вращающихся трансформаторов и сохранении повышенной точности цифрового измерения угла положения ротора, улучшая характеристики объекта применения. Для этого датчик положения ротора содержит обмотки статора и ротора, выполненные на печатных платах, микроконтроллер, компаратор, цифровой приемник, цифровой передатчик, два двухканальных четырехквадрантных цифроаналоговых преобразователя, два фильтра низких частот, трансформатор, блок питания, а также дополнительно содержит компаратор и микроконтроллер. А также выполняются соотношения для выходных сигналов датчика положения ротора, подаваемых на аналоговый вход объекта применения по линии приема от аналогового вращающегося трансформатора. 2 ил ...

РОТОРНО-ПОРШНЕВОЙ ДВИГАТЕЛЬ ВНУТРЕННЕГО СГОРАНИЯ

Сущность изобретения: в роторно-поршневых двигателях внутреннего сгорания с колебательным движением поршней 4, которое посредством шатунов 20 передается на коленчатые валы 22 и зубчатые колеса 23, зубчатые колеса находятся в зацеплении с зубчатым венцом 25 корпуса с внутренними зубьями, за счет чего движение поршней преобразуется во вращательное движение ротора 2. Система из четырех шатунов 20 образует статическую неопределимость положения средней оси соединения поршней 4 и втулки. Чтобы устранить возникающие при этом нагрузки, между зубчатым венцом 25 и корпусом 1 предусмотрено упругое соединение. 2 с. и 12 з.п. ф-лы, 4 ил.

Абсолютный датчик угла поворота

Изобретение относится к измерительной технике и может быть использовано для бесконтактного определения угла поворота и углового положения вала, скорости и направления вращения. В датчике угла поворота магнитная система выполнена в виде диска с вмонтированными в него двумя постоянными магнитами, один - прямоугольной формы с осевой намагниченностью, расположенный в центре диска, другой - дугообразный с радиальной намагниченностью. Считывающее устройство состоит из четырех магниторезистивных чувствительных элементов (МРЧЭ), два из которых размещены в центре считывающего устройства, имеют общий центр и развернуты под углом 45° относительно друг друга, а третий и четвертый расположены по окружности относительно центра с радиусом, равным радиусу дугообразного магнита, причем плечи третьего МРЧЭ разнесены симметрично относительно центра на расстояние диаметра дугообразного магнита, а линии, соединяющие первую пару плеч третьего МРЧЭ, центры первого и четвертого МРЧЭ образуют один равнобедренный ...

ДАТЧИК УГЛА ПОВОРОТА

Изобретение относится к железнодорожной технике и может быть использовано для бесконтактного измерения скорости вращения колесной пары локомотива для определения его основных кинематических параметров. Предложенный датчик угла поворота содержит диск с нанесенными на него маркерами, два вихретоковых датчика считывания и вихретоковый датчик коррекции расстояния со следующими соединениями: диск жестко закреплен на выступающем торце вала буксы ж/д колеса локомотива, на внешнем краю диска в области нанесения маркеров расположен 21 маркер, на расстоянии 4-5 мм от внешнего края диска, на кронштейне расположены вихретоковые датчики. При этом датчики маркеров над зоной маркеров в диаметральном направлении, а датчик коррекции вне зоны маркеров по радиусу к одному из датчиков маркеров, выходы всех вихретоковых датчиков соединены через схему обработки с микроконтроллером, причем на диск нанесен 21 маркер, ширина каждого выбрана таким образом, что равна зазору между ними, а зазор между первым и вторым ...

Устройство для измерения угла вращения

СИСТЕМА ДЛЯ ОПРЕДЕЛЕНИЯ ДОБРОТНОСТИ СИСТЕМЫ ДАТЧИКА ПОЛОЖЕНИЯ ВРАЩЕНИЯ

... 1. Способ оценки добротности профиля магнитного датчика, включающий в себя:во время вращения объекта, считываемого датчиком положения, сохранение данных, связанных с добротностью профиля магнитного датчика, в датчике положения, и выдачу данных о положении через штырек датчика положения; иво то время, когда указанный объект не вращается, выдачу, по меньшей мере, части данных, связанных с добротностью профиля магнитного датчика, через штырек.2. Способ по п.1, отличающийся тем, что, по меньшей мере, часть данных, связанных с добротностью профиля магнитного датчика, выдают после того, как внешняя система изменяет состояние выхода датчика положения, когда объект не вращается, и когда датчик запитан.3. Способ по п.2, отличающийся тем, что добротность профиля магнитного датчика включает данные, относящиеся к усилению магнитного профиля.4. Способ по п.1, отличающийся тем, что в качестве объекта используют коленчатый вал двигателя, при этом данные, связанные с добротностью профиля магнитного датчика ...

Device for determining an angle of rotation

In order to determine the angle of rotation of an encoding disc (10), there are contained in the electrically conductive disc strip-shaped resistance elements (21) which are electrically connected to the material of the disc only at their ends. Contact devices (K1-K4) scan the tracks in which the resistance elements are arranged. The respective disc sector can be determined by combining those tracks in which resistance elements are present, and the fine determination of the angle is performed within the disc sector by measuring the resistance between a contact element and the contact disc (10). ...

VORRICHTUNG AN BAGGERN

Positionserfassungsvorrichtung

Eine Positionserfassungsvorrichtung ist dazu konfiguriert, eine Position eines Erfassungsziels (821) zu erfassen. Die Positionserfassungsvorrichtung beinhaltet: ein IC-Package (10), welches ein magnetisches Erfassungselement (11 und 12), das dazu konfiguriert ist, ein Signal auszugeben, das von einer Richtung oder einer Stärke eines umgebenden magnetischen Felds abhängt, einen Dichtungsabschnitt (13), in welchem das magnetische Erfassungselement abgedichtet ist, und Leadleitungen (16, 17, 18 und 19), welche ausgehend von dem Dichtungsabschnitt hervorstehen und elektrisch mit den magnetischen Erfassungselementen verbunden sind, beinhaltet; Anschlussleitungen (21, 22, 23 und 24), die jeweils elektrisch mit den Leadleitungen verbunden werden können; und eine Leadführung (351, 352, 353, 354 und 355, 41, 42, 43, 44 und 45, oder 51, 52, 53, 54, und 55), die entlang der Leadleitungen platziert ist, um eine Positionsabweichung der Leadleitungen einzuschränken.

Anordnung zur zweidimensionalen, berührungslosen Positionsbestimmung eines Meßobjektes

Stelleinrichtung und zugehöriges Herstellungsverfahren

Die vorliegende Erfindung betrifft eine Stelleinrichtung (1) zum mechanischen Betätigen eines Bauteils, umfassend einen Elektromotor (3), der einen Stator (6) und einen Rotor (7) mit Antriebswelle (8) aufweist, eine Abtriebswelle (4) zur Kopplung mit dem Bauteil und ein Getriebe (5), das die Antriebswelle (8) mit der Abtriebswelle (4) antriebsmässig verbindet und das einen Schneckentrieb (15) mit Schnecke (16) und Schneckenrad (17) aufweist, wobei eine Antriebsachse (9), um welche die Antriebswelle (8) drehbar ist, senkrecht zu einer Abtriebsachse (14) verläuft, um welche die Abtriebswelle (4) drehbar ist.Eine hohe Leistung bei kompakter Bauform wird erreicht, wenn die Schnecke (16) drehfest an der Antriebswelle (8) angeordnet ist und mit dem Schneckenrad (17) in Eingriff steht, wobei das Schneckenrad (17) drehbar an der Abtriebswelle (4) angeordnet ist und drehfest mit einem ersten Zahnrad (18) verbunden ist, wobei das erste Zahnrad (18) drehbar an der Abtriebswelle (4) angeordnet ist ...

Magnetischer Positionssensor

Vorrichtung (100), die umfasst: – ein permanentmagnetisches Material (111), das sich entlang eines Pfads (181, 191) erstreckt, – einen ersten Winkelmagnetfeldsensor (101, 102), der eingerichtet ist, um mindestens ein erstes Signal (201, 202) auszugeben und der beabstandet zum Material (111) angeordnet ist, – einen zweiten Winkelmagnetfeldsensor (101, 102), der eingerichtet ist, um mindestens ein zweites Signal (201, 202) auszugeben und der beabstandet zum Material (111) und zum ersten Winkelmagnetfeldsensor (101, 102) angeordnet ist, – eine Auswerteeinheit (177), die eingerichtet ist, um basierend auf dem mindestens einen ersten Signal (201, 202) und dem mindestens einen zweiten Signal (201, 202) eine Relativpositionierung (109) des ersten Winkelmagnetfeldsensors (101, 102) und des zweiten Winkelmagnetfeldsensors (101, 102) gegenüber dem Material (111) parallel zu dem Pfad (181, 191) zu bestimmen, wobei die Magnetisierung (112) des Materials (111) eine Periodenlänge (115) aufweist, die ...

Stellungssensor zur kontaktlosen Erfassung bestimmter Positionen einer axial verschiebbaren und um bestimmte Winkel drehbaren Welle

Winkellagesensor, der so arbeitet, dass er eine hoch lineare magnetische Flussdichte misst

Winkellagesensor, welcher aufweist:Ein hartmagnetisches Bauteil, welches mit einem drehbaren Bauteil verbunden ist, wobei das hartmagnetische Bauteil einen Umfang aufweist und in einer Umfangsrichtung hiervon magnetisiert ist, um eine magnetisches Feld hierherum zu erzeugen;ein weichmagnetisches Bauteil, welches im Einflussbereich des durch das hartmagnetische Bauteil erzeugten Magnetfelds angeordnet ist, um einen magnetischen Kreis auszubilden, wobei eine Drehung des drehbaren Bauteils die Relativlage zwischen dem hartmagnetischen Bauteil und dem weichmagnetischen Bauteil ändert und bewirkt, dass sich eine magnetische Flussdichte in dem magnetischen Kreis ändert; undeinen Magnetflussdichtenmesssensor, welcher mit einem Abstand von dem weichmagnetischen Bauteil entfernt angeordnet ist, wobei der Magnetflussdichtenmesssensor arbeitet, um die magnetische Flussdichte in dem magnetischen Kreis zu messen, um ein Signal als eine Funktion der magnetischen Flussdichte als eine Angabe einer Winkellage ...

Verfahren zum Bestimmen der Gesamtteilungsabweichung eines Lagegebers

Verfahren zum Bestimmen der Gesamtteilungsabweichung eines Lagegebers, der mit einer Magnetscheibe und einem Magnetdetektor ausgerüstet ist, wobei die Magnetscheibe Paare von Magnetpolen aufweist, wobei das Verfahren die folgenden Schritte aufweist:- Erfassen, über eine mechanische Umdrehung, eines Winkelsignals der durch den Magnetdetektor gemessenen magnetischen Intensität als eine Funktion des Rotationswinkels der Magnetscheibe,- Bestimmen von Nulldurchgangspositionen basierend auf dem erfassten Winkelsignal und von der Anzahl von bestimmten Nulldurchgangspositionen,- Bestimmen der Polpaarlängen basierend auf den Nulldurchgangspositionen, und- Bestimmen der Gesamtteilungsabweichung basierend auf den Polpaarlängen.

Length or angle measuring device for machine tool

The measuring device has a measuring scale (1) and a relatively movable scanner (2), with a limit position switch provided by the measuring scale and/or its associated carrier, as a magnetically-detected element, detected by a Hall element of the scanner. Pref. the limit switch elements are provided by magnetic strips (5.1, 5.2) defining the opposite ends of the measuring range, with the signal from the Hall element used to cut out the displacement drive for the scanner, to prevent collision between the latter and an adjacent machine part.

Vorrichtung zur Messung der Biegungsbewegung eines Antennen-Mastes und Steuerungsanwendung zum Richten einer motorisierten Antenne.

Drehbare Sensoren zur Messung von Eigenschaften einer unterirdischen Formation

Bohrlochanordnung (214), umfassend:einen Werkzeugstrang (212);einen mit dem Werkzeugstrang (212) gekoppelten richtungsabhängigen Sender (216);einen mit dem Werkzeugstrang (212) gekoppelten richtungsabhängigen Empfänger (218), wobei zumindest einer von dem richtungsabhängigen Empfänger (218) und dem richtungsabhängigen Sender (216) bezogen auf den Werkzeugstrang (212) drehbar ist; undein mit zumindest dem Empfänger (218) kommunikativ gekoppeltes Informationsverarbeitungssystem, wobei das Informationsverarbeitungssystem einen Prozessor (1102) und eine mit dem Prozessor gekoppelte Speichervorrichtung (1104) umfasst, wobeizumindest einer von dem Sender (216) oder Empfänger (218) eine Antenne einschließt, die eine erste, in einer ersten Wicklungsebene (217) angeordnete Wicklung (215) und eine zweite, in einer zweiten Wicklungsebene (219) angeordneten Wicklung (213) aufweist, wobei die erste Wicklung (215) bezogen auf die zweite Wicklung (213) geneigt ist, wobei der in der Speichervorrichtung ...

Vorrichtung zur Bestimmung der Lage eines Aufnahmekörpers zu einem Grundkörper

Die Erfindung betrifft eine Vorrichtung mit einem Grundkörper 1 und einem dazu in seiner Lage änderbaren Aufnahmekörper 2 mit mehreren Aufnahmefächern, die ein Detektionssystem aufweist, mit dem die relative Lage des Aufnahmekörpers 2, auch hinsichtlich der Positionierung der Aufnahmefächer 3 zum Grundkörper 1 feststellbar ist, wobei das Detetktionssystem einen Magneten 4 und einen Sensor 11 aufweist und der Magnet 4 am Aufnahmekörper 2 angeordnet ist und der Sensor 11 am Grundkörper 1 oder umgekehrt, die Feldlinien 5 des Magnetfelds haben in den verschiedenen relativen Lagen des Aufnahmekörpers 2 verschiedene Richtungen durch den Sensor 11 und der Sensor 11 weist eine Sensibilität auf, die Richtung des Magnetfelds durch ihn festzustellen.

Method for producing multi-pole magnetic ring, involves providing elastomeric encoder track, and connecting carrier with encoder track by sintering process at specific elevated temperature and specific pressure

The method involves providing an elastomeric encoder track that is made of water-based polyurethane rubber and strontium-ferrite powder, where a mixing ratio of the strontium-ferrite powder to the water-based polyurethane rubber is 40 to 80 percent. The encoder track is applied on a carrier e.g. sheet, by a screen printing process. The carrier is connected with the encoder track by sintering process at elevated temperature of about 155 degree Celsius and pressure of about 5 to 6 bar.

Position display esp. for displaceable ski-binding - has protective housing enclosing all electrical and electronic parts pref. supplied via solar cell

The position display has a housing enclosing an electronic display, a mechanical/electrical transducer and an electronic evaluation and control circuit for the display. The position of the sliding object located outside the housing is coupled to the transducer, which provides a corresponding output signal. Pref., the display is provided via at least one alphanumeric character and/or graphical symbol, the operating current for the display circuit provided by a solar cell. ADVANTAGE - Display is fully enclosed to provide protection from weather etc.

Arrangement for detecting the rotary position of a solid of revolution

The invention relates to an arrangement for detecting the rotary position of a solid of revolution, which arrangement has at least two B field sensors (11, 12) which are offset spatially by 90 DEG relative to one another and are respectively arranged centrally between two magnets (7, 8) which are situated opposite one another with the same polarity and are spaced apart from one another, in which arrangement, furthermore, there are provided two soft magnetic sensor members (3, 4) which are driven by the solid (1) of revolution and which are arranged eccentrically in an opposing fashion with respect to a common axis of rotation and are spaced apart from one another axially in such a way that one sensor member (3) projects into the space between one magnet (7 and 9) and the B field sensors (11 and 12), and the other sensor member (4) projects into the space between the other magnet (8 and 10) and the B field sensors (11 and 12). ...

Angle measuring device

An angle measuring device is proposed which consists essentially of a sensor device and an evaluation circuit which is assigned to it and has a microcontroller. In order to achieve an extremely low outlay on relatively simple components even when guaranteeing a relatively high resolution and accuracy, in this angle measuring device the evaluation circuit is provided with a switching stage which on the one hand undertakes to supply power to the sensor device, and on the other hand, supplies the measurement signal, initiated by the sensor device, to the downstream microcontroller in the form of a pulse frequency.

Capacitive rotation angle sensor

The invention relates to a capacitive rotation angle sensor, which comprises a rotor disc (6), which is connected in a rotationally fixed manner to the sensor shaft (8), and at least one stator disc (5) which is fixed to the sensor housing (1), the discs being aligned plane-parallel to each other and having electrode structures on the sides facing each other. In order to compensate for mechanical play or thermally induced movements between stator disc (5) and rotor disc (6) in a reliable manner, the stator disc (5) encloses the sensor shaft (8) centrally and is secured against rotation by means (11, 12) which effect a non-rigid connection to the housing (1). ...

Stellorgan mit einem Drehwinkelsensor

Die Erfindung betrifft ein Stellorgan (1, 1a, 1b) mit einem Drehwinkelsensor (2). Der Drehwinkelsensor (2) umfasst ein erstes Element (3), ein zweites Element (4), ein Sensorelement (5) und einen Magnethalter (7), welcher einen Magneten (6) wenigstens teilweise umschließt und fixiert. Dabei sind das erste Element (3) und das zweite Element (4) um eine sich in einer axialen Richtung (A) erstreckende Achse (8) relativ zueinander verdrehbar. Dabei ist das Sensorelement (5) mit dem zweiten Element (4) verbunden. Dabei ist vorgesehen dass der Magnethalter (7) drehfest mit dem ersten Element (3) verbunden ist und relativ zum ersten Element (3) in der axialen Richtung (A) verlagerbar ist, wobei der Magnethalter (7) mittels wenigstens eines Federelements (9, 91, 92, 93) vom ersten Element (3) in Richtung auf das zweite Element (4) hin gedrückt oder gezogen wird.

Positionssensor

Verfahren zur Erhöhung einer Genauigkeit eines Ausgangssignales eines Magnetfeldsensors für eine Winkelpositionserfassung einer rotierenden Komponente

Die Erfindung betrifft ein Verfahren zur Erhöhung einer Genauigkeit eines Ausgangssignales eines Magnetfeldsensors für eine Winkelpositionserfassung einer rotierenden Komponente, bei welchem der Magnetfeldsensor (7) eine der rotierenden Komponente (2) erfasst, welche mit einem Korrekturwert beaufschlagt wird. Bei einem Verfahren, bei welchem das Ausgangssignal des Magnetfeldsensors auf einfache Weise hochgenau korrigiert werden kann, wird eine Temperatur einer Systemumgebung des Magnetfeldsensors (7) bei einer Bewegung rotierenden Komponente (2) unterhalb eines Schwellwertwinkels überwacht und bei Überschreitung einer vorgegebenen Temperaturdifferenz die von dem Magnetfeldsensor (7) detektierte Winkelposition mit dem Korrekturwert beaufschlagt.

Geberradanordnung und Verfahren zum Ermitteln einer Absolutwinkelposition und einer Drehrichtung

Vorgestellt wird eine Geberradanordnung zum Ermitteln einer Absolutwinkelposition und einer Drehrichtung eines Rotors, umfassend: ein Geberrad, das drehfest mit dem Rotor verbunden ist, wobei das Geberrad an einer Seite der Geberradanordnung eine erste Geberradspur aus einer Anzahl n an gleichmäßig beabstandet angeordneten Zähnen aufweist; eine zweite Geberradspur, die an einer der ersten Geberradspur zugewandten Seite der Geberradanordnung angeordnet ist und die drehfest mit dem ersten Geberrad verbunden ist und die die gleiche Anzahl n an Zähnen wie die erste Geberradspur aufweist, wobei die Zähne der zweiten Geberradspur einen asymmetrischen Winkelversatz zu den Zähnen der ersten Geberradspur aufweisen; einen ersten Sensor zum Abtasten des ersten Geberradspur, einen zweiten Sensor zum Abtasten der zweiten Geberradspur, wobei eine durch eine Sensorfläche des ersten Sensors definierte erste Ebene und eine durch eine Sensorfläche des zweiten Sensors definierte zweite Ebene parallel zueinander ...

Integrierte Drehwinkelbestimmungssensoreinheit in einem Messsystem zur Drehwinkelbestimmung

Die Erfindung betrifft eine integrierte Drehwinkelbestimmungssensoreinheit in einem Messsystem zur Drehwinkelbestimmung mit um Drehachse drehbarer Welle mit Geber, wobei eine erste als Die ausgebildete Halbleiterschicht mit einer senkrecht zu der Drehachse angeordneten Oberseite und einer Unterseite und ein in der ersten Halbleiterschicht monolithisch ausgebildetes erstes Hall-Sensorsystem vorgesehen ist und eine zweite als Die ausgebildete Halbleiterschicht mit einer senkrecht zu der Drehachse angeordneten Oberseite und einer Unterseite und ein in der zweiten Halbleiterschicht monolithisch ausgebildetes zweites Hall-Sensorsystems vorgesehen ist, wobei jedes Hall-Sensorsystem wenigstens einen ersten Hall-Sensor und einen zweiten Hall-Sensor und einen dritten Hall-Sensor aufweist und die drei Hall-Sensoren des ersten Hall-Sensorsystems entlang eines zu der Oberseite der ersten Halbleiterschicht verlaufenden und konzentrisch zur Drehachse angeordneten ersten Kreisabschnitts ausgebildet sind ...

Steering angle sensor for motor vehicle steering wheel for use as part of traction dynamic control system

Fitted to the steering shaft (10) are two acceleration sensors (13,14) positioned on a circle around its axis of rotation (12) at 900 to one another. Acceleration signals from these sensors can be processed to provide the steering angle. Further acceleration sensors fitted to the steering column in the same relative positions can be processed to provide correction factors for e.g. centrifugal acceleration when following curves ...

Verfahren und Vorrichtung zum Messen von Winkeln

DREHWINKELDETEKTIONSVORRICHTUNG

Eine Drehwinkeldetektionsvorrichtung (10) zur Erfassung eines Drehwinkels (θ) einer Drehwelle (Sf), mit:einem drehenden Teil (12), das sich gemeinsam mit der Drehwelle dreht und einen erfassten Abschnitt (20a) aufweist, der zur Erfassung des Drehwinkels verwendet wird,einem ersten Detektor (30), der so angeordnet ist, dass er dem erfassten Abschnitt gegenüberliegt, und der so ausgestaltet ist, dass er eine Änderung einer physikalischen Größe, die durch die Rotation des drehenden Teils (12) bewirkt wird, in einem ersten Detektionsfeld (DF1) über dem erfassten Abschnitt (20a) detektiert, und der ein erstes Detektionssignal (Sa) ausgibt, welches den Drehwinkel des drehenden Teils (12) repräsentiert, undeinem zweiten Detektor (32), der so angeordnet ist, dass er dem erfassten Abschnitt (20a) gegenüberliegt, und der so ausgestaltet ist, dass er eine Änderung der physikalischen Größe, die durch die Rotation des drehenden Teils (12) bewirkt wird, in einem zweiten Detektionsfeld (DF2) detektiert ...

Integrierte Hall-Sensor-Einrichtung und Verfahren zum Messen eines Magnetfeldes mittels einer integrierten Hall-Sensor-Einrichtung

Vorgeschlagen wird eine integrierte Hall-Sensor-Einrichtung zum Messen eines Magnetfeldes. Die integrierte Hall-Sensor-Einrichtung umfasst:einen Halbleiterchip;einen ersten Hall-Sensor zum Erzeugen eines ersten Magnetfeldmesssignales, wobei das erste Magnetfeldmesssignal von einer parallel zu einer x-Achse wirkenden Komponente des Magnetfeldes abhängig und von einer parallel zu einer y-Achse wirkenden Komponente des Magnetfeldes unabhängig ist;einen zweiten Hall-Sensor zum Erzeugen eines zweiten Magnetfeldmesssignales, wobei das zweite Magnetfeldmesssignal von der parallel zu der y-Achse wirkenden Komponente des Magnetfeldes abhängig und von der parallel zu der x-Achse wirkenden Komponente des Magnetfeldes unabhängig ist;einen ersten Spannungssensor zum Messen von mechanischen Spannungen in dem Halbleiterchip, wobei der Spannungssensor zum Erzeugen eines Schubspannungsmesssignals ausgebildet ist, welches mit einer ersten Schubspannung korrespondiert, welche in einer zu der x-Achse senkrechten ...

Filterschaltkreis für einen elektromagnetischen Aufnehmer

MAGNETORESISTIVER SENSOR ZUR MESSUNG DER RELATIVEN LAGEVERÄNDERUNG ZWISCHEN ZWEI BAUTEILEN

Elektrische Steuereinrichtung

Meßvorrichtung zur berührungslosen Erfassung eines Drehwinkels

This invention concerns a measuring device for contactless capture of the angle of rotation and consists of a rotor (11) and a stator (10). On the inner wall of the rotor (11), two ring magnets (21, 22) are arranged, the polarities of which are oriented in opposite directions. A Hall element is in a slit-like air gap (14) in the stator (10). Moreover, an additional magnet (17) is located in a second slit-like air gap (15) which produces a pre-magnetization in the Hall element so that the linear measuring area A shows no change in sign.

Method for controlling angle determination in controlling system of vehicle, involves transmitting driver specific guiding angle to wheel controlling angle at controlled wheel of vehicle through controlling system

The method involves transmitting a driver specific guiding angle (delta-Dr) to a wheel controlling angle (delta-W) at a controlled wheel (6) of a vehicle through a controlling system (1). The controlling system has a servo unit (7) and a torque sensor (8) for detecting the controlling moment, where a sensor unit (9) is provided for detecting the wheel controlling angle. A torsion angle (delta-T) of the torque sensor, is detected. Independent claims are also included for: (1) a control device for executing a method for controlling angle determination in the controlling system; and (2) a controlling system with a control device.

A position sensor and use of the position sensor

DEVICE

Position Sensing Transducer

Wind Turbine Monitoring

A method of monitoring the performance of a wind turbine 1 uses bending moment data from strain sensors 4 in the turbine blades 2 to calculate rotational speed of the turbine 1, angular position of the turbine blades 2, angle of inclination of the turbine blades about an axis extending radially from the rotor by comparison of the components of mechanical strain in two non-parallel directions, drive torque and resultant load on the rotor 3. The method has the advantage that the inputs to the drive train of the wind turbine can be measured directly.

A Rotary encoder

Apparatus and method for measuring an anatomical angle of a body

An apparatus (20) for automatically measuring an anatomical angle of a body, the apparatus (20) comprising aligning means (23) for aligning an axis (22) of the apparatus (20) with anatomical landmarks of the body, sensing means (30) for sensing an orientation of the axis (22) while the axis is aligned with the landmarks, and processing means (40) for processing the sensed orientation. The sensing means (30) comprises a magnetometer (32) and an accelerometer (31), and the aligning means comprises a pair of lasers.

Detecting sensor error

An apparatus 200b and method is disclosed for detecting sensor error, in a system measuring e.g. angle of rotation in, for example, a power steering system. Two channels comprising respective magnetic sensing elements 102a-b, for instance anisotropic magneto-resistance (AMR) sensors, are fed into a third channel (shown but not labelled), in addition to all three channels being fed into processor 210, which computes expected third channel data, detecting sensor error based at least partly on a comparison of expected with actual third channel data. The sensing elements may be oriented at different respective non-zero angles with the first such angle possibly 45 degrees. The angle may be computed using an arctan function and channels may further comprise amplifiers A1-A3 and sampling circuits S1-S3. Each sensing element of the first and second channels may comprise a full bridge circuit, outputs being given from half-bridges of the respective full bridge circuits.

Monitoring angular relationships of ramps

Apparatus is provided for monitoring angular relationship between a ramp (1) pivotally supported at one end (5) on a ship, and an adjoining surface (2) such as an adjustable bridge ramp pivotally supported at one end (3) on a jetty, quay or landing stage. A first sensor provides an output representing the magnitude and sign of the angle ( theta A) of the ramp (1) relative to a fixed plane (7). A second sensor provides an output representing the magnitude and sign of the angle ( theta B) of the adjoining surface (2) relative to a fixed plane (8). An amplifier, receiving the outputs from the sensors, monitors the angular difference between the ramp (1) and surface (2). A pair of comparators receive output signals from the amplifier and are each set to trigger at a particular signal level but of opposite polarity, providing control signals to mechanical means for adjusting the ramp angles to maintain them within safe limits. ...

Position sensing transducer

Detecting sensor error

Inductive pick-off devices

An inductive pick-off device for use with apparatus comprises inductive coil means (38) arranged in use to have induced therein a signal of a parameter of the apparatus and to have applied to it a control signal for the apparatus, whereby means (38) serves a dual function, the pick-off device further including a signal channel comprising summation means (53) having two inputs connected to respective ends of coil means (38) and feeding an input of summing amplifier means (55) having another input at earth potential, summation means (57) having respective inputs connected to the output of amplifier means (55) and a centre tap (58) of coil means (38) feeding an input of a summing amplifier means (61), having another input at earth potential, whereby the signal channel provides the induced signal substantially free from degradation by the control signal. Means 38 may be a pair of coils in antiphase arranged to have induced therein a displacement signal in a gyroscope. ...

MEASURING DEVICE FOR DETERMINING THE ANGULAT POSITION OF A CAM

... 1318419 Measuring displacement electrically GERHARDT MESSMASCHINENBAU KG 18 Aug 1970 39756/70 Heading G1N In order to determine the angular position or orientation of a cam two displacement transducers are positioned with their cam followers at first and second angularly displaced points on the edge of the cam and their outputs subtracted to give a resultant signal indicative of the angular position of the cam. In the arrangement of Figs. 1, 2 (not shown) the two transducers producing A. C. signals are connected in series opposition to an indicator the position of the pointer of which indicates the position of the cam. In the arrangement of Fig. 5 and Fig. 4 (not shown) two groups of transducers 10, 11, 12 and 13, 14, 15 are provided with their cam followers touching the cam edge and connected in series opposition as shown, resistors 16-21 weighting the individual followers. In Fig. 6 the followers 4, 5 are connected to a change-over switch 22 having a central inoperative position. According ...

KAPAZITIVER DREHWINKELSENSOR

MAGNETIC SENSOR FOR TURNING LOCALIZATION

BENDING ANGLE MEASURING SYSTEM ON BENDING MACHINES

KAPAZITIVER DREHWINKELSENSOR

Verfahren zur Ermittlung eines Polradwinkels

A method of determining a rotor displacement angle of a synchronous generator having a rotor and electrically connected to a power supply network uses at least one rotary speed measuring device. During a revolution of the rotor, in particular during each revolution of the rotor, the measuring device communicates at least one rotary speed signal to an evaluation unit. A frequency measuring device communicates a frequency signal to the evaluation unit for each period duration of a voltage signal of the power supply network. A time duration between communication of the rotary speed signal and communication of the frequency signal is determined by the evaluation unit, and the rotor displacement angle is inferred in dependence on the determined time duration.

Messen von Positionen, mechanischen Verschiebungen und Rotationen von Körpern

Die Erfindung betrifft eine Vorrichtung und eine Verfahren zum Messen der relativen Position und den Winkeln zwischen zwei zu messenden Körpern (7, 77). Die Erfindung ist dadurch gekennzeichnet, dass sie einem oder mehreren Permanentmagneten (6), aufweist und dass die zu messende Position indirekt über ein Magnetfeld bestimmt wird. Das Magnetfeld wird durch einen oder mehrere Magnetfeldsensoren (3) detektiert, der mit einem Mikrochip ausgelesen wird. Um auf die Position und den Winkel des Permanentmagnetsystems (6) in Relation zu den Magnetfeldsensoren (3) rückzurechnen wird eine mathematische Minimierungsmethode verwendet. Die Energie die für das Auslesen der Sensoren benötigt wird, kann durch das Anregefeld eines Auslesegeräts bezogen werden. Der Sensor kann ohne Energieversorgung auskommen und kann mittels Standardauslesegeräte, wie Beispielsweise eines NFC fähiges mobiltelefon ausgelesen werden.

Unterwerkzeug einer Biegepresse mit einer Biegewinkelmessvorrichtung

The invention relates to a lower tool (1) of a bending press having a bend angle measuring apparatus. The lower tool (1) has an elongated main body (2) with a machine receptacle (3), a swage recess (5) furthermore being arranged in the longitudinal extent (4) of the main body (2) and lying opposite the machine receptacle (3). Two bending beams (6) are arranged in the longitudinal extent (4), these bending beams (6) each being held in a receptacle (14) of the main body (2) and being pivotable between a position of rest and an operating position about an axis (7) parallel to the longitudinal extent (4). Each bending beam has a bearing surface (8), which, in the operating position, forms a swage bearing surface (8) with a wall portion of the swage recess (5). Furthermore, at least one pretensioned spring element (10) is arranged between each bending beam (6) and the main body (2), as a result of which the bending beam is held in the position of rest and automatically pivots back into the position ...

POSITION SENSOR FOR THE COLLECTION OF THE ROTATING MOTION OF A WAVE

PROCEDURE FOR CONTACTLESS CONTROL OF THE DIRECTION OF ROTATION OF ELECTRICAL MACHINES.

POSITION DETECTOR

TURNING POSITION INDICATOR

BRUSHLESS ELECTRICAL ENGINE WITH TWO SENKRECHTEN RESOUND TO TRANSDUCERS

POSITION SENSOR WITH HALLSONDE

ELECTRICALLY POWER STEERING FOR MOTOR VEHICLES SUPPORTED

MULTI-TURN CODE ROTATION TRANSDUCER

Mirror position detection device

HALO Disc

Magnetic rotational position sensor

System for detecting the angle of rotation of a rotatable element

Magnetoresistive sensor element, especially angular sensor element

Device for detecting the angle position of a motor vehicle steering wheel

Eddy current error-reduced ac magnetic position measurement system

METHOD FOR MEASURING TEMPERATURE AND OF ADJUSTING FOR TEMPERATURE SENSITIVITY WITH A MEDICAL DEVICE HAVING A POSITION SENSOR

A method for measuring temperature and of adjusting for temperature sensitivity of a medical device having a position sensor comprises the steps of providing a medical device having a position sensor and measuring voltage at the position sensor. A resistance value is then determined from the measured voltage and a temperature value at the position sensor is determined based on the resistance value. The temperature value is determined using, the position sensor. Accordingly, temperature is directly measured and monitored using the position sensor itself. Additionally, a sensitivity is determined at the position sensor based on the temperature. Location information from the position sensor is adjusted based on the sensitivity.

STATIONARY MAGNET VARIABLE RELUCTANCE MAGNETIC SENSORS

A position sensor for sensing whether a rotatable element is in at least a first rotational position or a second rotational position is provided. A rotor is configured to be coupled to the rotatable element for rotation therewith, and is constructed at least partially of a magnetically permeable material and includes a first rotor pole. A stator is non-rotationally mounted, is constructed at least partially of a magnetically permeable material, is spaced apart from the rotor, and comprises a first main pole and a first stealer pole. The first main pole and the first stealer pole are spaced radially apart from each other. A magnet is non-rotationally disposed adjacent to the stator and is spaced apart from the rotor. A first magnetic sensor is non-rotationally mounted between the stator and the rotor, is disposed adjacent the first main pole, and is radially offset from the first stealer pole.

CAPACITIVE ANGULAR POSITION TRANSDUCER

DEVICE FOR MEASURING THE FOLD ANGLE IN A SHEET METAL BENDING PRESS

GONIOMETER

BELT SCRAPER AND METHOD FOR OPERATING A BELT SCRAPER

The invention relates to a belt scraper (20, 120). A scraper element (22, 24, 124) for placing against a belt (12) is pivotably positioned relative to a pivot axis (30, 130), wherein a spring element (42) effects a torque on the scraper element (22, 24, 124). A sensor (44) for determining a pivot angle a of the scraper element (22, 24, 124) is a non-contact sensor having an indicator part (46) and a detection part (48) for detecting the position of the indicator part (46). The indicator part (46) is mounted at a distance from the pivot axis (30, 130) on a movable element (38, 136) which is coupled to the scraper element (22, 24, 124).

A MOUNT ASSEMBLY, A SYSTEM AND METHOD FOR COLLECTING FLUID CONDUIT DATA

Provided is a device, method, and inspection system for collecting data in a fluid conduit. The inspection system includes a pig, wherein the pig is defined by at least a front end and a read end, the rear end being distally opposed to the front end along a longitudinal axis, a mount assembly secured to the rear end of the pig; and at least one sensor device removably coupled to the mount assembly.

DOSE CONTROL SYSTEM FOR INJECTABLE-DRUG DELIVERY DEVICES AND ASSOCIATED METHODS OF USE

The invention relates to a dose control system configured for an injectable drug delivery device. The device comprises a disk-shaped diametral single-dipole magnet (9) attachable to a rotatable dose wheel, a housing removably attachable to the proximal extremity of the drug delivery body and comprising at least a first and a second magnetic field measurement means (8). An integrated control unit (2) is connected to the magnetic field measurement means and is configured to process information received therefrom. The magnetic field measurement means are located in the housing in a displaced axial relationship relative to the longitudinal axis of the drug delivery body and the magnet. The magnet is configured to co-rotate with the dose setting wheel and the integrated control unit is configured to provide a normalized vector with regard to the displaced axial relationship of the magnetic field measurement means, said normalized vector being derived from the measured magnetic field generated ...

A POSITION DETECTING SYSTEM THAT SELF-MONITORS FOR CONNECTIVITY FAULTS

A system for detecting position that is capable of self-monitoring for connectivity faults. In one embodiment, the system comprises a transformer, an excitation potential source, a bias potential source, and a processor.

ROTATABLE SENSORS FOR MEASURING CHARACTERISTICS OF SUBTERRANEAN FORMATION

Sensor assemblies are described for measuring isotropic, anisotropic, or directionally dependent, characteristics of a subterranean formation. Sensor assemblies can include sensors deployed on a tool string. One or more of the sensors can be rotatable relative to the tool string. Rotating one or more sensors relative to the tool string can provide data about the subterranean formation at multiple points around the tool string.

APPARATUS AND METHOD FOR STEERING ANGLE MEASUREMENT OF AN AIRCRAFT LANDING GEAR AND AN AIRCRAFT LANDING GEAR

The present invention relates to a method and an apparatus for the contactless measurement of the steering angle of an aircraft landing gear, in particular of a nose landing gear. Furthermore, this invention relates to an aircraft landing gear, in particular a nose landing gear, which allows a contactless measurement of the steering angle.

APPARATUS AND METHOD FOR STEERING ANGLE MEASUREMENT OF AN AIRCRAFT LANDING GEAR AND AN AIRCRAFT LANDING GEAR

The present invention relates to a method and an apparatus for the contactless measurement of the steering angle of an aircraft landing gear, in particular of a nose landing gear. Furthermore, this invention relates to an aircraft landing gear, in particular a nose landing gear, which allows a contactless measurement of the steering angle.

MAGNETORESISTIVE LINEAR DISPLACEMENT SENSOR, ANGULAR DISPLACEMENT SENSOR, AND VARIABLE RESISTOR

A giant magnetoresistance displacement sensor includes at least one layered structure. This layered structure includes a harder magnetic (ferromagnetic or antiferromagnetic) layer (34) having a fixed magnetic state, a second, softer magnetic layer (32) and a metal layer (33) interposed between and contacting these two layers (32, 34) to prevent exchange coupling between the two layers. The sensor also includes means (56, 58) for inducing a domain wall (37) at a measurand position, between regions (35, 36) of nonaligned magnetic fields in thc softer magnetic layer (32), and means (50) for measuring electrical resistance between points on opposite sides of the structure. In operation, the means (56, 58) for inducing a domain wall, typically one or more indexing magnets (56, 58), is positioned relative to the giant magnetoresistance strip. The resistance across the strip is measured, and from this resistance measurement the position of the domain wall is determined. The present invention is ...

INERTIAL SENSOR

An inertial sensor for measuring changes in rotational position of a sensor support, having a flywheel rotationally movable in the plane of rotational motion relative to the sensor support and a measured value sensor picking up the rotational state of the flywheel relative to the sensor support. A torque clutch is provided between the sensor support and flywheel. The clutch has a torque curve that is a linear function of the relative angular velocity between the flywheel and the sensor support. The measured value sensor is designed as a synchro that taps off the rotational angle of the flywheel relative to the sensor support. -14- ...

MIRROR POSITION DETECTION DEVICE

In a device for detecting mirror position, there is provided a resistor substrate being located coaxially with a nut adjuster for adjusting an angle of incline of a mirror, and a contact member so as to nip the resistor substrate. The contact member slides in line corresponding to the movement of the nut adjuster while the resistor substrate is fixed to a housing. Thus, as the nut adjuster slides, the contact member slides against the resistor substrate, which results the change of a contact position of the contact member and a long resistance R1. Consequently, since a voltage level generated at the contact member changes, the angle of incline of the mirror can be determined by detecting this voltage level. Inasmuch as the contact member and the resistor substrate are housed within a sliding block, there is no need for much space to locate the various parts in, and thus the whole device can be configured in a compact manner. In addition, the fact that the resistance R1 is connected to the ...

ROTARY POSITION SENSOR WITH IMPROVED BEARING TOLERANCE

An angular sensor has a shaped dual magnet structure carried upon a pole pie ce having a generally "c" shaped cross-section. The magnet and pole piece defin e a generally circular linear field which is concentric about the axis of rotati on of the complete rotor. A Hall effect device is inserted into the open portion or ga p between the two magnets and is exposed to a well defined field. Through the use of particular magnet materials and a magnet geometry extending from the axis of rotation t o a point well beyond the Hall sensor, a precise and yet tolerant magnetic circu it is produced.

Rotation angle detector

A rotation angle detector for detecting a rotation angle of a magnet rotator includes: the rotator with a magnet mounted on a rotation shaft; a sensor chip; and an operation element. The chip includes: first and second normal component detection elements for detecting a magnetic field along with a normal direction and first and second rotation component detection elements for detecting a magnetic field along with a rotation direction. A phase difference Δθ, output signals S 1 , S 2 , C 1 , C 2 of the detection elements, a value Δ θ b R obtained by differentiating a component of the magnetic field along with the normal direction with respect to the rotation direction, and a value Δ θ b θ obtained by differentiating a component of the magnetic field along with the rotation direction with respect to the rotation direction satisfies: S 1 - S 2 Δθ ≅ Δ θ  b R and C 1 - C 2 Δθ ≅ Δ θ  b θ The operation element calculates: C 1 + α   S 1 - S 2 Δθ and S 1 - β   C 1 - C 2 Δθ

Sensor system

A sensor system has a rotational angle sensor for detecting a rotational angle and a torque sensor for detecting a torque. The rotational angle sensor has a rotatable rotational angle transmitter having index elements. The torque sensor has a rotatable torque transmitter having magnets, which generate a magnetic field, and a magnetic flux unit for amplifying the magnetic field. The index elements and the magnetic flux unit are connected to one another in a rotationally fixed manner.

Angular or linear magnetic position sensor not sensitive to external fields

The invention relates to an angular or linear magnetic position sensor that comprises a mobile member including at least one magnet ( 1 ) having a magnetisation direction that varies linearly along the movement direction of the magnet in a surface defined by said movement direction and in a normal direction, at least four magneto-sensitive elements ( 2, 3 and 4, 5 ) and at least one processing circuit ( 6 ) providing a signal based on the absolute position of the mobile member, characterised in that a first set of magneto-sensitive elements ( 2, 3 ) and ( 4, 5 ) are located at a same point, the first couple of magneto-sensitive elements ( 2, 3 ) being spatially offset from a second couple of magneto-sensitive elements ( 4, 5 ) along the movement direction, and in that the magneto-sensitive elements ( 3 and 5 ) measure the tangential component of the magnetic field while the magneto-sensitive elements ( 2 and 4 ) measure the normal component of the magnetic field in order to provide, after algebraic combination of the components taken in pairs, two sinusoidal signals substantially having an electrical phase shift of 90°.

Multiple dimension position sensor

An apparatus including a controller, a workpiece transport in communication with the controller having a movable portion and a transport path, and a multi-dimensional position measurement device including at least one field generating platen attached to the movable portion and at least one sensor group positioned along the transport path and in communication with the controller, the field generating platen is configured for position measurement and propelling the movable portion, each sensor in the at least one sensor group is configured to provide but one output signal along a single axis corresponding to a sensed field generated by the at least one field generating platen and the controller is configured calculate a multi-dimensional position of the movable portion based on the but one output signal of at least one of the sensors in the at least one sensor group, the multi-dimensional position including a planar position and a gap measurement.

Fixing structure for signal wires of a resolver

A fixing structure for signal wires of a resolver is disposable on an end face of a stator of the resolver. The fixing structure includes a circuit board, a fixing section disposed on the circuit board for connecting the circuit board to the end face of the stator, a connection terminal seat disposed on the circuit board, multiple connection sections formed through the circuit board in the form of holes, and multiple bridge circuits respectively arranged between the corresponding connection sections and the connection terminal seat for bridging the corresponding connection sections and the connection terminal seat.

Relative angle detection device, rotation angle detection device, relative angle detection method, and rotation angle detection method

Disclosed is a relative angle detection device for detecting a relative angle between a first rotary shaft and a second rotary shaft, the relative angle detection device being provided with a first magnetic field sensing unit which outputs a value according to a magnetic field of a magnet, a second magnetic field sensing unit which outputs a value according to the magnetic field of the magnet and outputs a value different from the output value of the first magnetic field sensing unit even if being placed in the same magnetic field as that of the first magnetic field sensing unit, a correction unit which corrects one output value out of the output value of the first magnetic field sensing unit and the output value of the second magnetic field sensing unit in accordance with an amplitude ratio between magnetic field components orthogonal to each other in the magnetic field of the magnet, and a computing unit which computes the relative angle between the first rotary shaft and the second rotary shaft on the basis of the one output value corrected by the correction unit and the other output value different from the one output value. Consequently, a technique capable of detecting the relative rotation angle with high accuracy is provided even if magnitudes of amplitudes of magnetic field components orthogonal to each other in the magnetically sensitive surface of the magnetic field sensing unit are different from each other.

Relative angle sensing device and electric power steering apparatus

A relative angle sensing device includes: a sensor contained in a housing provided with a communication hole and outputting an electric signal corresponding to a relative rotation angle between two rotary shafts coaxially arranged; an electric cable transmitting the electric signal to a device arranged outside of the housing; an electric cable holding member fitted with the communication hole and holding the electric cable; and an external member arranged at a location outer than the electric cable holding member, wherein the external member includes a pair of dividable members dividable in a direction intersecting a hole direction of the communication hole, and the external member passes the electric cable within the pair of dividable members and presses the electric cable with the pair of dividable members to change a direction of the electric cable at the outside of the housing into the direction intersecting the hole direction.

Speed sensor authority for and method of measuring speed of rotation

Sensor arrangement for measuring a rotation speed of a salient member of a rotatable body comprising a first electrode arrangement providing a first input, a second electrode arrangement providing a second input different from the first input, the first and second electrode arrangements configured so noise in the first and second inputs is substantially the same, and wherein variations in the first and second inputs are caused by rotation of the rotatable body and the salient member past the first and second electrode arrangements, an output arrangement for receiving the first and second inputs, and for providing an output proportional to a difference between the first and second inputs, and a retaining member for retaining one or more of the first and second electrode arrangements and output arrangement, the speed of rotation of the salient member measurable from a variation in the output caused by rotation of that salient member.

Rotation angle and torque sensor

The rotation-angle and torsion sensor has two gears that are connected so as not to turn with shaft sections, which [gears] mesh with gears. On one of the gears a unipolar or multipolar magnet is attached. On the other gear, magnetic flux guides matching to number of poles are attached, that are configured as L shapes. One leg of the flux tranducers points in the direction of the multipolar magnet while the other legs run parallel to the gear and in fact one on one side and the other on the other side of the gear, with these legs enclosing a second sensor between them that is situated in the gear.

ELECTROMAGNETIC COIL STRUCTURE HAVING A FLAT CONDUCTIVE TRACK, MAGNETIC CORE AND MAGNETO ELECTRONIC ANGLE SENSOR

The present invention relates to an electromagnetic coil structure for being mounted on a magnetic core. Such a magnetic core is for instance a part of a rotating electric machine or of a magneto electronic angle sensor. The present invention further relates to a belonging magnetic core and to a magneto electronic angle sensor, in particular a reluctance resolver. Furthermore, the present invention relates to a method for fabricating such an angle sensor. The coil structure () comprises at least one electrically conductive winding formed as a flat conductive track (), and at least one flexible electrically insulating carrier () for carrying said winding. Said coil structure has at least one opening () for receiving a magnetic flux guiding element () of said core. The circumferential surface of the core whereto said electromagnetic coil structure () is mounted has a polygonal shape. 120.-. (canceled)21. Electromagnetic coil structure for being mounted on a magnetic core , said coil structure comprising:at least one electrically conductive winding formed as a flat conductive track;at least one flexible electrically insulating carrier for carrying said winding;wherein said structure can be mounted on said core to induce and/or receive a magnetic flux in said core.22. Electromagnetic coil structure according to claim 21 , wherein said coil structure has at least one opening for receiving a magnetic flux guiding element of said core.23. Electromagnetic coil structure according to claim 21 , wherein in a mounted state claim 21 , said coil structure is bent at least once to have a three-dimensional form.24. Electromagnetic coil structure according to claim 23 , wherein in a mounted state claim 23 , said coil structure is bent twice to encompass a magnetic core of a stator or a rotor in a U-shaped manner.25. Electromagnetic coil structure according to claim 21 , wherein said coil structure is bent several times to reduce the length of said coil structure for a reduced ...

Device and method for processing signals which represent an angular position of a motor shaft

In an apparatus and a method for processing signals that represent an angular position of a shaft of a motor, a storage unit for storing arrival times of the signals in a memory is provided, the storage unit additionally evaluating a rotation direction datum of the shaft. Storage of the times in the memory is performed in a first sequence in the event of a rotation of the shaft in a first direction, and storage in the memory is performed in a second sequence that is opposite to the first sequence in the event of a rotation of the shaft in a second direction that is opposite to the first direction. 120-. (canceled)21. An apparatus for processing signals representing an angular position of a shaft of a motor , comprising: evaluate a rotation direction datum of the shaft;', 'store arrival times of the signals in memory locations of a memory (a) in a first sequence in the event of a rotation of the shaft in a first direction, and (b) in a second sequence opposite to the first sequence in the event of a rotation of the shaft in a second direction opposite to the first direction; and', 'use an arrival time stored most recently in the sequence and an arrival time stored previously in the sequence for a calculation, wherein a selection of the previously stored time is implemented by: (i) in the event of a rotation of the shaft in the first direction, a time required for the calculation is selected, proceeding from the time stored most recently in the first sequence, oppositely to the first sequence;, 'a storage device configured to 'wherein the storage device includes at least one address pointer which points to one of the memory location of the most recently stored time or the next free memory location, and wherein the first sequence occurs in the ease of the rotation of shaft in the first direction by incrementing the address pointer, and wherein the second sequence occurs in the case of the rotation of the shaft in the second direction by decrementing the address pointer ...

Electromagnetic method for sensing the relative position of two items using coupled tuned circuits

An electromagnetic method for sensing the relative position of two items using coupled tuned resonant circuits. Two co-resonant tuned circuits are attached to two items 1 and 2 that move relative to one another. The coupling between the circuits is arranged to vary with their relative physical position. One of the tuned circuits is excited at or close to its resonant frequency. The degree of coupling between the tuned circuits is detected by its effect on the way the resultant oscillation changes with time, and this allows the relative position of the items to be established. The inductive elements of the tuned circuits can comprise anti-symmetrical regions 3, 4, 9 and 10 so that the magnetic fields generated by the oscillations are localised and sensitivity to externally applied magnetic fields is minimised. The inductive elements can be implemented directly as printed circuit board tracks.

MAGNETIC ENCODER WITH IMPROVED RESOLUTION

A low-cost magnetic encoder that facilitates generating sinusoidal magnetic flux is provided. First and second permanent magnet arrays each include a plurality of permanent magnets arranged such that magnetic poles having the same polarity face each other, and magnetic yokes disposed on side surfaces of the plurality of permanent magnets. The permanent magnets and the magnetic yokes are arranged side by side at a predetermined pitch in the moving direction of a magnetic piece array. First and second magnetic detectors corresponding to the first and second permanent magnet arrays are disposed in a positional relationship allowing detection of leakage magnetic flux generated when the permanent magnet arrays and the magnetic piece array are displaced with respect to each other. 1. A magnetic encoder comprising:a permanent magnet array including a plurality of permanent magnets arranged such that magnetic poles having the same polarity face each other, or arranged such that the magnetic poles having different polarities face each other through a non-magnetic member interposed therebetween;a magnetic piece array including a plurality of magnetic pieces spaced from each other along the permanent magnet array; anda magnetic detector configured to detect leakage magnetic flux generated when the permanent magnet array and the magnetic piece array are displaced with respect to each other, whereina pitch of the plurality of permanent magnets and a pitch of the plurality of magnetic pieces are determined to form a magnetic path in which magnetic flux emitted from one of the permanent magnets in the permanent magnet array passes through one of the magnetic pieces that faces the permanent magnet or the non-magnetic member adjacent to the one permanent magnet when the permanent magnet array and the magnetic piece array are continuously displaced with respect to each other.2. The magnetic encoder according to claim 1 , whereinwhen the pitch P of the magnetic pieces is defined as P= ...

COMPACT 3D DIRECTION FINDER

An apparatus that includes two non-coinciding arrangements disposed in an two axes Cartesian coordinate system such that each arrangement having a non-zero projection on a respective axis from among the two axes. Each one of the arrangements includes a pair of oppositely directed, spaced apart, co-axial radiating-capable elements, each of the elements being hollow with internal space, and being slotted throughout its entire extent. A first circuitry coupled to the arrangement and being configured to sense an electric field projection along the axis and to convey it to a first feeding terminal. A second circuitry coupled to a slot of the arrangement and being configured to sense a magnetic field's projection along said axis and to convey it to a first feeding terminal. 1. An apparatus , comprising:at least two non-coinciding arrangements disposed in an at least two axes Cartesian coordinate system such that each arrangement having a non-zero projection on a respective axis from among said at least two axes; each one of said arrangements includes at least one pair of oppositely directed, spaced apart, co-axial radiating-capable elements, each of said elements being hollow with internal space, and being slotted throughout its entire extent; a first circuitry coupled to said arrangement and being configured to sense an electric field projection along said axis and to convey it to a first feeding terminal;a second circuitry coupled to at least one slot of said arrangement configured to sense a magnetic field's projection along said axis and to convey it to a first feeding terminal.2. The apparatus according to claim 1 , wherein each arrangement has a first longitudinal dimension and is capable of sensing a magnetic field projection along said axis and an electric field projection along said axis in a decade frequency band where the said first longitudinal dimension is smaller than λ/10 and where λcorresponds to the highest frequency of said frequency band.3. The antenna ...

Differential pressure gauge

A sensor assembly including a flexible member having a first end and a second end, a rotating member connected to the second end of the flexible member, a positional element disposed on the rotating member, and a sensor capable of sensing a movement of the positional element. A movement of the second end of the flexible member allows the rotating member and the positional element to rotate.

MOVEMENT SYSTEM CONFIGURED FOR MOVING A PAYLOAD IN A PLURALITY OF DIRECTIONS

A movement system includes a bridge crane, a trolley, and a movement device. The movement device includes an attachment portion, a plurality of housings, first and second curved elements, a cable, and a cable angle sensor. The curved elements are pivotally attached to housings and perpendicularly overlap with one another such that a first slot defined in the first curved element is perpendicular to a second slot defined in the second curved element. The first curved element is pivotable about a first axis and the second curved element is configured to pivot about a second axis. The cable extends from the attachment portion and through each of the slots. The cable is pivotable to angularly displace at least one of the curved elements about a respective axis. The cable angle sensor is configured to measure the angular displacement of the at least one of the first and second curved elements. 1. A movement system configured for moving a payload , the movement system comprising:a bridge crane configured for movement along an X axis;a trolley movably attached to the bridge crane and configured for movement along a Y axis, in perpendicular relationship to the X axis; an attachment portion;', 'a plurality of housings operatively extending from the attachment portion;', 'a first curved element and a second curved element extending between respective ends;', 'wherein the ends of the first and second curved elements are pivotally attached to a respective one of the plurality of housings;', 'wherein each of the first and second curved elements forms a partial circle;', 'wherein the first curved element defines a first slot and the second curved element defines a second slot;', 'wherein the first curved element perpendicularly overlaps with the second curved element such that the first slot of the first curved element is in perpendicular relationship to the second slot of the second curved element;', 'wherein the first curved element is configured to pivot about a first axis and ...

PORTABLE TERMINAL DEVICE AND POSITION DETECTION METHOD USED THEREIN

A portable terminal device is disclosed that includes a movable part having a display part; an arm part supporting the movable part so that the movable part is rotatable at least ±90° with reference to a rotation center position around a rotation center; and a position detection part detecting the position of the movable part relative to the arm part. The position detection part includes magnets, magnetic sensors detecting the magnetic fields thereof, and a calculation part determining the position of the movable part based on sensor outputs. The magnets are provided in one of the arm part and the movable part so as to be 90° apart from each other around the rotation center. The magnetic sensors are provided in the other one of the arm part and the movable part so as to oppose the corresponding magnets when the movable part is positioned at the rotation center position. 1. A portable terminal device , comprising:a movable part having a display part;an arm part provided on a base part, the arm part being configured to support the movable part so that the movable part is rotatable in a rotation range of at least ±90° with reference to a rotation center position around a rotation center; anda position detection part configured to detect a rotational position of the movable part relative to the arm part,wherein the position detection part includes a pair of magnets, a single two-output magnetic sensor configured to detect magnetic fields of the magnets, and a calculation part configured to determine the rotational position of the movable part based on an output of the two-output magnetic sensor,the magnets are provided in a first one of the movable part and the arm part so that the magnets are 180° apart from each other around the rotation center and have respective magnetic fields in a same direction,the two-output magnetic sensor is provided in a second one of the movable part and the arm part, anda first one of the magnets opposes the two-output magnetic sensor in ...

Angle Detection Apparatus

Provided is an angle detection device capable of detecting the angle with high sensitivity by a very simple assembly process without requiring complicated processing. The angle detection device is provided with: a rotor () which is formed by a disk plate body produced from a magnetic substance having uniaxial magnetic anisotropy, the disk plate body rotating around a center point within the disk plate surface; a stator () which is provided to face the plate surface of the disk plate body of the rotor (), has approximately the same external shape as that of the rotor, and is divided into a plurality of fan-shaped regions, and in which an exciting coil or a detection coil is wound along the outer periphery of each of the divided regions. 1. An angle detection apparatus comprises:a rotor in which a disk member comprising a magnetic body has a magnetic permeability, which is generally uniaxially anisotropic, said disk member being rotatable around a central point in a plane of the disk member; anda stator comprising a plurality of coils, at least one of said coils being an exciting coil that generates a magnetic field, and at least one of said coils being a detection coil that intersects with the magnetic field excited by said exciting coil to detect a voltage corresponding to an angle of rotation of said rotor.2. The angle detection apparatus as claimed in claim 1 , wherein:said stator has substantially a same outer shape as the disk member of said rotor and is disposed in a vicinity of the disk member of said rotor so as to face the plane thereof, said stator being divided into a plurality of fan-shaped sections and said exciting coil and said detection coil being provided alternately on at least linear portion of the fan-shaped sections, respectively, on an outer periphery of said fan-shaped sections.3. The angle detection apparatus as claimed in claim 2 , further comprising:a back yoke that is provided on an opposite side to said rotor relative to said stator, said ...

ROLLER BEARING ARRANGEMENT WITH AN ANGLE SENSOR

A roller bearing configuration having an angle sensor includes a roller bearing. The Angle sensor an absolute encoder with a sensor ring connected in a rotationally fixed manner to one of the bearing rings of the roller bearing, and a measuring element connected in a rotationally fixed manner to the second bearing ring, wherein coils, namely at least one transmitting coil and at least one receiving coil, are situated on the sensor ring, and the transmitting coil has an axis of symmetry, which is identical to the axis of rotation and is situated in an annular metallic pot core, which has a U-shaped cross section and is concentric with the axis of rotation of the roller bearing, and a receiving coil is situated partially inside and partially outside of the pot core. 122-. (canceled)23. A roller bearing configuration comprising:a roller bearing having a first bearing ring and a second bearing ring concentric with an axis of rotation, the first and second bearing rings including an inner bearing ring and outer bearing ring, the roller bearing including rolling elements situated between the inner and outer bearing rings; andan angle sensor coupled to the roller bearing for detection of an angular position of the first bearing ring in relation to the second bearing ring, the angle sensor including a sensor ring connected to the first and second bearing rings and a measuring element connected to the second bearing ring in a rotationally fixed manner, at least one transmitting coil and at least one receiving coil situated on the sensor ring, a signal being transmissible between the transmitting coil and the receiving coil via a magnetic circuit and a variable reluctance existing in the magnetic circuit due to the measuring element, the transmitting coil surrounding the axis of rotation and situated in a pot core having a U-shaped cross section, being concentric with the axis of rotation, being connected to one of the first and second bearing rings and forming a part of the ...

Variable reluctance resolver

The present invention relates to a resolver of an electric driving motor for vehicle which comprises a rotor, a stator comprising a stator main body which encircles the rotor and teeth which extend from the stator main body to be wound by a coil, a terminal module comprising a terminal end which contacts the coil for an electric connection and a terminal main body which supports the terminal end, and a connector module comprising a connector main body which is detachably coupled to the terminal main body and a lead line which is connected to an outer device and supported by the connector main body and which contacts the terminal end for an electric connection if the connector main body is coupled to the terminal main body, thus simplifying manufacturing process and repairing process and reducing cost.

Magnetic Inductive Type Position Sensor

Disclosed is a magnetic inductive type position sensor, the position sensor including at least one rotor body coupled to a rotation shaft to rotate in association with rotation of the rotation shaft and having a plurality of protrusively and circumferentially formed wing members, a PCB arranged in opposition to the rotor body, and a guide member connecting each distal end of the wing members to guide each of the wing members to be aligned on the same planar surface.

MAGNETIC ENCODER HAVING THIN DETECTION SURFACE

A magnetic encoder including an object to be detected, a casing opposite to the object, a magnet and a magnetic sensor accommodated in the casing is provided. The casing of the magnetic encoder has an opposite wall opposite to the object. The opposite wall has a thickened portion and a thin portion integrally formed with the thickened portion. The thin portion has a smaller thickness than the thickened portion. The magnetic sensor is situated at the thin portion. 1. A magnetic encoder comprising:an object to be detected made of a magnetic material and capable of rotating about a rotational axis;a casing made of a non-magnetic material and spaced apart from the object in a direction perpendicular to the rotational axis;a magnet accommodated in the casing for generating a magnetic field; anda magnetic sensor for detecting changes in a magnetic field corresponding to rotational movement of the object, the magnetic sensor being accommodated in the casing and situated between the magnet and the object, whereinan opposite wall of the casing opposite to the object has a thickened portion and a thin portion integrally formed with the thickened portion, the thin portion having a smaller thickness than the thickened portion, the magnetic sensor being situated at the thin portion.2. The magnetic encoder according to claim 1 , wherein the thin portion of the opposite wall of the casing is formed by machine-cutting.3. The magnetic encoder according to claim 1 , wherein the opposite wall of the casing has a transition portion between the thickened portion and the thin portion claim 1 , the transition portion having a thickness which continuously changes between the thickened portion and the thin portion.4. The magnetic encoder according to claim 3 , wherein the transition portion has a thickness which linearly changes between the thickened portion and the thin portion.5. The magnetic encoder according to claim 3 , wherein the transition portion has a thickness which changes in a ...

ROTATION ANGLE DETECTION DEVICE

The present invention relates to a rotation angle detection device mainly used for rotation angle detection of a steering wheel of an automobile and the like. 1. A rotation angle detection device , comprising:a rotation body rotated in conjunction with a steering;a first detection body rotated in conjunction with the rotation body;a cuboid first magnet installed in a first accommodation portion which is provided in a center of the first detection body;a first magnetism detection element arranged so as to face the first magnet; andcontrol means for detecting a rotation angle of the rotation body by a detection signal from the first magnetism detection element, whereinthe first accommodation portion includes a first support portion for supporting one surface of the first magnet, and a first retention portion for retaining the other surface facing the one surface of the first magnet.2. The rotation angle detection device according to claim 1 , wherein the first magnet is turned in the first accommodation portion and press-fitted between the first support portion and the first retention portion.3. The rotation angle detection device according to claim 1 , wherein the first retention portion retains both longitudinal ends of the other surface of the first magnet.4. The rotation angle detection device according to claim 3 , wherein the first retention portion retains the first magnet by a first inner inclination portion inclined relative to the other surface of the first magnet.5. The rotation angle detection device according to claim 1 , wherein the first detection body is made of synthetic resin.6. The rotation angle detection device according to claim 5 , wherein the synthetic resin includes polyoxymethylene.7. The rotation angle detection device according to claim 1 , further comprising:a second detection body rotated in conjunction with the first detection body or the rotation body;a cuboid second magnet installed in a second accommodation portion which is provided ...

SYSTEM AND METHOD FOR COMPENSATING ORIENTATION OF A PORTABLE DEVICE

A system for compensating orientation of a portable device is provided with a processing unit for: determining a roll rotation angle of the portable device in a mobile reference system associated thereto; and applying a rotation matrix, which is a function of the roll rotation angle, for transforming relative displacements of the mobile device in the mobile reference system into corresponding displacements in a fixed reference system, of an inertial type, thus compensating the orientation of the portable device. The processing unit determines the roll rotation angle, in the presence of dynamic acceleration, by means of: acquisition of a roll angular velocity of the portable device by a gyroscopic sensor fixed with respect thereto; and time integration of the same roll angular velocity. 1. A system comprising:a portable device; perform a first processing operation for determining in a first operating condition a roll rotation angle of the portable device, the first processing operation including acquiring a roll angular velocity of the portable device and determining the roll rotation angle by performing a time integration of the roll angular velocity; and', 'apply a rotation matrix that is a function of the roll rotation angle, the rotation matrix being configured to transform relative displacements of the portable device in a mobile reference system into corresponding displacements in a fixed reference system, of an inertial type, the corresponding inertial displacements being independent of the orientation of the portable device., 'a processing unit fixed to the portable device, the processing unit configured to2. The system according to claim 1 , comprising a gyroscopic sensor fixed with respect to the portable device and configured to detect the roll angular velocity of the portable device and provide a signal indicative of the roll angular velocity to the processing unit.3. The system according to claim 2 , wherein the gyroscopic sensor is a MEMS triaxial ...

POSITION DETECTOR DEVICE

Provided is a position detector device capable of suppressing the effect of external magnetic fields on precision in detection. A position detector device () comprises: a subject to be detected (), which rotates along with the rotation of a handle grip () that is disposed on a handlebar (); a detector unit () that detects the subject to be detected (); and a case () which houses the subject to be detected () and the detector (). The subject to be detected () is treated as a magnetic cylindrical body, the detector unit () is treated as a magnetic detector unit () that detects changes in magnetism. A support member () rotatably supports the subject to be detected (), and further comprises a housing member () that houses the detector unit () on the interior circumference side of the subject to be detected (). 1. A position detector device comprising:a subject to be detected, which rotates with the rotation of a handle grip disposed in a handlebar;a detector unit which detects the subject to be detected; anda case which houses the subject to be detected and the detector unit,wherein:the subject to be detected is formed as a magnetic cylindrical body;the detector unit is formed as a magnetic detector unit which detects a change in magnetism; anda support member which rotatably supports the subject to be detected and includes a housing member in which the detector unit is disposed is provided in an inner circumference side of the subject to be detected.2. The position detector device according to claim 1 , wherein the detector unit is formed by a magnetic detector element which is surface-mounted on a circuit board.3. The position detector device according to claim 1 , wherein the subject to be detected is held by a holder member and the holder member is rotatably disposed in the support member.4. The position detector device according to claim 3 , wherein the subject to be detected is formed by a magnet and is cylindrical in shape. The present invention relates to a ...

ROTARY ACTUATOR

A rotary actuator has a handle, rotatable about an axis of rotation, and a position sensor system for detecting the rotary position of the handle. The rotary actuator has an actuating segment is made of an electrically conductive material and, forming a capacitor, is opposite a sensor segment of a stationary segment ring, which is concentric with respect to the axis of rotation 3 and consists of a plurality of sensor segments. The sensor segments include an electrically conductive material and are axially spaced apart by an air gap. A sensor line leads from each sensor segment to evaluation electronics. 110-. (canceled)11. A rotary actuator , comprising:a handle rotatable about an axis of rotation;a position sensor system for detecting a rotary position of the handle;an actuating segment located at an end of the handle facing away from an operating side of the handle and at a radial distance from the axis of rotation, the end of the handle including an electrically non-conductive material, wherein the actuating segment includes a first electrically conductive material and forms a capacitor; the actuating segment is located opposite the sensor segments,', 'the sensor segments are spaced apart from one another in a circumferential direction and are made of a second electrically conductive material, and the sensor segments are spaced apart from the handle by an air gap; and', 'a respective sensor line leading from each sensor segment to evaluation electronics., 'a stationary segment ring including a plurality of sensor segments uniformly distributed on a periphery of the segment ring and being concentric with respect to the axis of rotation, wherein12. The rotary actuator as claimed in claim 11 , wherein the handle includes a marking in an end region of an end on the operating side of the handle.13. The rotary actuator as claimed in claim 11 , wherein:the handle includes a plastic part, and the actuating segment includes a conductive plastic.14. The rotary actuator as ...

ENCODER DEVICE FOR USING A MAGNETIC SENSOR ARRANGEMENT AND BEARING UNIT COMPRISING THE SAME

An encoder device for use in a magnetic sensor arrangement, comprising: a metallic ring having a set of clearances in a ferromagnetic material, wherein said clearances are arranged around a circumference of the metallic ring, wherein the metallic ring is configured to generate an oscillating magnetic induction in a nearby magnetic sensor upon rotation of the metallic ring, wherein the metallic ring is made of at least one flat and strip-like sheet metal material, two ends of which are joined to form a loop. 1. An encoder device for use in a magnetic sensor arrangement , the encoder device comprising:a metallic ring having a set of clearances in a ferromagnetic material, whereinthe clearances are arranged around a circumference of the metallic ring, whereinthe metallic ring is configured to generate an oscillating magnetic induction in a nearby magnetic sensor upon rotation of the metallic ring, and whereinthe metallic ring is made of at least one flat and strip-like sheet metal material, two ends of which are joined to form a loop.2. The encoder device according to claim 1 , wherein the encoder device further comprises means for connecting the end portions of the strip-like sheet metal material in a connecting portion of the metallic ring.3. The encoder device according to claim 2 , wherein the end portions of the strip-like like sheet metal material are overlapping in the connecting portion of the metallic ring.4. The encoder device according to claim 2 , wherein the end portions of the strip-like like sheet metal material are bent radially inward and clamped by a clamping slit in a connecting portion of the encoder device.5. The encoder device according to claim 1 , wherein the metallic ring provides holes for bolting the metallic ring onto a support ring.6. The encoder device according to claim 1 , further comprising a support ring with an essentially cylindrical outer surface claim 1 , wherein the strip-like metal material forming the metal ring is wound around ...

VARIABLE RELUCTANCE RESOLVER

A variable reluctance resolver has a stator combined with a housing. The resolver does not require extra space in a case for a device, into which the resolver is mounted, and it is easily coaxially mounted to the device. The resolver includes a ring-like stator a rotor and a housing The stator has a stator core a first insulator a second insulator and coils The stator core is provided with plural salient poles The first insulator and the second insulator hold the stator core therebetween from both sides of the stator core The coils are wound to the salient poles via the first insulator and the second insulator The housing accommodates the stator The first insulator is coaxially integrally formed with the housing 1. A variable reluctance resolver comprising:a ring-like stator including a stator core, a first insulator, a second insulator, and coils, the stator core being provided with plural salient poles, the first insulator and the second insulator holding the stator core therebetween from both sides of the stator core, and the coils being wound to the salient poles of the stator core via the first insulator and the second insulator;a rotor being arranged inside the stator; anda housing accommodating the stator and being used for inserting the stator into a tubular case,wherein the first insulator is coaxially integrally formed at the housing.2. The variable reluctance resolver according to claim 1 , wherein the first insulator and the second insulator have a surface that face each other claim 1 , one of the surfaces of the first insulator and the second insulator is formed with a boss portion claim 1 , and the other surface is formed with a connecting hole for fitting with the boss portion claim 1 , and the first insulator and the second insulator are connected by fitting the boss portion into the connecting hole.3. The variable reluctance resolver according to claim 1 , wherein the housing is formed with a positioning means for setting an angular position of the ...

DLA ROTOR FLUX DESNITY SCAN METHOD AND TOOL

A method of measuring flux density and run out to accommodate rotors of different diameters, evaluate intrinsic properties of magnet material and the magnetization process. Circular run out measurement capability is also used to evaluate bearing journal “ovality.” The method includes the use of a scan tool, or a DLA Rotor Flux Density Scan Fixture, which evaluates the electromagnetic field strength (gauss), combined with surface run out and presents the data in a scalable pictorial format. The scan tool includes a probe which measures a magnetic field strength and circular run out of the perimeter of the magnet. Simultaneously, a non-contact measurement sensor is used to measure the rotor surface for subtle variations. The resulting sine wave gauss data and the surface dimension data are manipulated into a scalable “radar” plot. The radar plot correlates magnetic pole field strength and surface circular run out variation to the index position. 1. A method for measuring the magnetic flux and run out of a surface , comprising the steps of:providing a digital linear actuator (DLA);providing a rotor, the rotor being part of the DLA;providing a magnet connected to and circumscribing the rotor, the magnet having an outer surface;providing a plot having the magnet flux density of the magnet, and the run out of the magnet;simultaneously measuring the run out and the magnet flux density of the rotor; andplotting the run out and the magnet flux density are together on the plot to correlate the measurements of the run out and the magnet flux density.2. The method for measuring the magnetic flux and run out of a surface of claim 1 , further comprising the steps of:providing a first section of the outer surface;providing a second section of the outer surface;providing a non-contact measurement sensor for measuring the run out on the first section of the outer surface of the magnet, and for measuring the run out on the second section of the outer surface of the magnet;providing a ...

INCREMENTAL CAPACITIVE ANGULAR DISPLACEMENT TRANSDUCER

Incremental angular capacitive displacement transducer comprising movable () and fixed () dielectric plates, sections of electrode (), jointed by means of inter-section electrical connections and situated on side of fixed () dielectric plate facing movable () dielectric plate, sections of two electrodes () located on side of movable () dielectric plate facing fixed () dielectric plate, and signal conversion unit (). 1. An incremental capacitive angular displacement transducer comprising:a movable dielectric plate;a stationary dielectric plate;electrode sections jointed by inter-section electrical connections and positioned on a side of the stationary dielectric plate facing the movable dielectric plate;sections of two electrodes located on a side of the movable dielectric plate facing the stationary dielectric plate; anda signal conversion unit;wherein the movable plate is a disc and the stationary plate is a disc;and further comprising a first group of three oscillating circuits and a second group of three oscillating circuits, each oscillating circuit comprising its respective inductance coil, galvanically isolated from the signal conversion unit;wherein the electrode sections forming two electrodes in each of three oscillating circuits of the first group are positioned circumferentially on the side of the stationary disc facing the movable disc to form a first circumference;wherein the electrode sections forming two electrodes in each of three oscillating circuits of the second group are positioned circumferentially on the side of the stationary disc facing the movable disc to form a circumference inside the first circumference;wherein the electrode sections of a common electrode of the three oscillating circuits of the first group are positioned circumferentially on the side of the movable disc facing the stationary disc to form a second circumference opposite the electrode sections of the six electrodes of the three oscillating circuits of the first group on ...

Magnetic multi-turn absolute position detection device

The disclosure relates to a magnetic device for detecting the absolute position of an input shaft capable of rotating more than 360°, the device including a main magnetic sensor, a motion reducer, and a secondary magnetic sensor, wherein the main magnetic sensor is connected to a rotor, measures the rotation of the shaft for ranges of angles of less than 360°, and includes a main magnet, the motion reducer converts the rotation of the shaft into a reduced rotation, the maximum amplitude of which is equal to no more than 360°, and the secondary magnetic sensor measures the reduced rotation and includes a secondary magnet. According to the disclosure, the secondary magnet is arranged between the upper and lower planes of the main rotor, and the main magnet has P pairs of poles, where P is greater than 1.

MEASURING ROTATION AND TILT OF A WHEEL ON AN INPUT DEVICE

Embodiments of the present invention include a roller for an input device, where the roller's absolute angular position is measured by a magnetic encoder. A magnet is attached to the roller, possibly inside the roller so as to make the embodiment more compact. In one embodiment, the magnetization is simple and low cost. Further, tight tolerances are not required, and such a system is easy to manufacture. In one embodiment, the sensor is covered by any non-ferromagnetic material, to protect it from foreign particles, and to reduce ESD. In one embodiment, the wheel consumes much less power than conventional wheels in input devices. In one embodiment, the tilting of the wheel is measured using the same sensor that is used for measuring the rotation of the wheel. In one embodiment, a ratcheting feel provided to the user when rotating the wheel is synchronized with the rotation signal. 1. A wheel assembly for use in an input device , the wheel assembly comprising:a wheel;a magnet coupled to the wheel, wherein the coupling is such that the magnet rotates with the wheel; anda magnetic sensor configured to measure an absolute position and a tilt of the magnet, wherein the sensor provides signals triggered by rotation of the wheel, an amplitude of the signals corresponding to the tilt of the magnet, and a phase of the signals corresponding to the absolute position of the magnet.2. The wheel assembly of claim 1 , wherein the magnet is a permanent magnet.3. The wheel assembly of claim 1 , wherein the magnet is diametrically magnetized dual pole magnet.4. The wheel assembly of claim 1 , wherein the magnet is placed within the wheel.5. The wheel assembly of claim 1 , wherein the magnet is placed on a first side of the wheel claim 1 , and the sensor is placed on the first side of the wheel.6. (canceled)7. The wheel assembly of claim 1 , wherein the sensor provides signals triggered by rotation of the wheel to a host to which the input device is communicatively coupled.8. ( ...

INDUCTIVE DETECTION TYPE ROTARY ENCODER

A first reception wiring and a first magnetic flux coupler form a first track having a shape periodically changing in a rotation direction of the rotor at a first pitch. A second reception wiring and a second magnetic flux coupler form a second track having a shape periodically changing in a rotation direction of the rotor at a second pitch. The first reception wiring and the second reception wiring are stacked via a first insulative layer in a direction in which a rotation shaft extends. The first magnetic flux coupler and the second magnetic flux coupler are stacked via a second insulative layer in a direction in which the rotation shaft extends. 1. An inductive detection type rotary encoder comprising:a stator;a rotor which is rotatable about a rotation shaft and is arranged opposite to the stator;a transmission wiring which is annularly formed on the stator about the rotation shaft;a first reception wiring and a second reception wiring which are annularly formed on the stator along the transmission wiring about the rotation shaft; anda first magnetic flux coupler and a second magnetic flux coupler which are annularly formed on the rotor about the rotation shaft and are directed for magnetic-flux coupling with the transmission wiring, the first reception wiring and the second reception wiring,the first reception wiring and the first magnetic flux coupler forming a first track having a shape periodically changing in a rotation direction of the rotor at a first pitch,the second reception wiring and the second magnetic flux coupler forming a second track having a shape periodically changing in a rotation direction of the rotor at a second pitch different from the first pitch,the first reception wiring and the second reception wiring being stacked via a first insulative layer in a direction in which the rotation shaft extends, andthe first magnetic flux coupler and the second magnetic flux coupler being stacked via a second insulative layer in a direction in which ...

MULTIPOLAR ENCODER FOR POSITION SENSORS, AND DETECTION DEVICE INCLUDING SUCH AN ENCODER COMBINED WITH AT LEAST ONE POSITION SENSOR

A position sensor coder of the type comprising a multipolar magnetic annulus () provided at its circumference with poles having polarities of opposite signs, the coder including at least one mark zone (Pi) presenting an angular width (Li) greater than the angular width of each of the alternating poles situated outside said zone around the circumference of the annulus, the coder being characterized in that said mark zone (Pi) comprises two adjacent singular poles (Ni, Si) presenting polarities of opposite signs and placed in the continuity of pole alternation in the annulus () and of angular width that is greater than the angular width of the poles lying outside the mark zone, the magnetization within the singular poles varying gradually in continuous manner between the two ends of the mark zone. 1232. A position sensor coder of the type comprising a multipolar magnetic annulus () provided at its circumference with poles having polarities of opposite signs that are placed in alternating manner and that are designed to travel past a measurement cell () that delivers a differential periodic signal corresponding to the variation in the intensity of the magnetic field delivered by the poles , the coder including at least one mark zone (Pi) presenting an angular width (Li) greater than the angular width of each of the alternating poles situated outside said zone around the circumference of the annulus , the coder being characterized in that said mark zone (Pi) comprises two adjacent singular poles (Ni , Si) presenting polarities of opposite signs and placed in the continuity of pole alternation in the annulus () and of angular width that is greater than the angular width of the poles lying outside the mark zone , the magnetization within the singular poles varying gradually in continuous manner between the two ends of the mark zone.2. A position sensor coder according to claim 1 , characterized in that the junction between the two singular poles (Ni claim 1 , Si) is ...

RESOLVER

A brushless axial flux electromagnetic resolver comprising a stator carrying output and excitation windings and an inductive rotor having two substantially annular members arranged substantially perpendicular to the axis of rotation of the rotor, wherein each of the annular members has a lobe which is helically skewed along the rotor and wherein the lobes of the annular members are angularly offset from one another to provide a discontinuity in the helical skew between the annular members. 1. A brushless axial flux electromagnetic resolver comprising:a stator carrying output and excitation windings; andan inductive rotor having two substantially annular members arranged substantially perpendicular to the axis of rotation of the rotor,wherein each of the annular members has a lobe which is helically skewed along the rotor and wherein the lobes of the annular members are angularly offset from one another to provide a discontinuity in the helical skew between the annular members.2. The resolver of claim 1 , in which the lobe extends along an arc of the outer circumference of the annular member between first and second ends wherein the first and second ends extend axially along the rotor aligned in a substantially axial direction.3. The resolver of claim 2 , in which the transverse cross section of the lobe is arch shaped and bounded at the first and second ends by straight substantially parallel lines.4. The resolver of claim 3 , further comprising a feature of the lobe selected from the list consisting of:the corners of the transverse cross section of the lobe being bevelled or rounded;the lobe being skewed across the outer surface of the annular member;the ends of the lobes being tapered to reduce discontinuities in the radial extent of the rotor;the lobe extending along an arc of the outer circumference of the annular member between first and second lobe ends wherein the first and second lobe ends extend axially and circumferentially along the rotor; andthe lobe ...

ROTATION-ANGLE DETECTION DEVICE

A detection track includes a first detection element group that includes a plurality of first magnetic resistance elements arranged at a pitch λ/(2n) when an order to cancel target harmonic components among a plurality of harmonic components superimposed on a fundamental component of a detection signal for multi-pole magnetic pattern is assumed as n, and a second detection element group that includes a plurality of second magnetic resistance elements arranged at the pitch λ/(2n), a plurality of first dummy magnetic resistance elements arranged among the first magnetic resistance elements, and a plurality of second dummy magnetic resistance elements arranged among the second magnetic resistance elements. Pitches between adjacent magnetic resistance elements among the first magnetic resistance elements and the first dummy magnetic resistance element are equivalent to one another, and pitches between adjacent magnetic resistance elements among the second magnetic resistance elements and the second dummy magnetic resistance element are equivalent to one another. 17-. (canceled)8. A rotation-angle detection device for detecting a rotation angle of a rotary drum having a multi-pole magnetic pattern at a magnetization pitch λon an outer circumference , the rotation-angle detection device comprising a detection track that detects the multi-pole magnetic pattern , whereinthe detection track includes{'b': '2', 'sub': 1', 'k', '1', 'k, 'a first detection element group that includes a plurality of first magnetic resistance elements, when k is an integer equivalent to or larger than and orders of the target harmonic components to cancel among a plurality of harmonic components superimposed on a fundamental component of a detection signal for the multi-pole magnetic pattern are assumed as n=n, . . . , and n, respectively, the first magnetic resistance elements being arranged at a pitch λ/(2n) for each of orders n=n, . . . , and nto cancel target harmonic components, and'}a ...

SENSING MAGNET APPARATUS FOR MOTOR

Disclosed is a sensing magnet apparatus for an motor, the apparatus including a disk-shaped plate centrally inserted by a rotation shaft, a ring-shaped sensing magnet so installed as to surface-contact an upper surface of the plate, formed at a position near to a periphery with a main magnet, and formed at a position near to a through hole with a sub magnet, and a separation inhibition unit physically coupling the plate and the sensing magnet to maintain the coupled state between the plate and the sensing magnet. 1. A sensing magnet apparatus for a motor , the apparatus comprising:a disk-shaped plate centrally inserted by a rotation shaft;a ring-shaped sensing magnet so installed as to surface-contact an upper surface of the plate, formed at a position near to a periphery with a main magnet, and formed at a position near to a through hole with a sub magnet; anda separation inhibition unit physically coupling the plate and the sensing magnet to maintain the coupled state between the plate and the sensing magnet.2. The sensing magnet apparatus of claim 1 , wherein the separation inhibition unit is provided in an insert molded sensing magnet wrapping both a front surface and a rear surface of the plate claim 1 , and the plate surface-contacts the sensing magnet at both the front and rear surfaces.3. The sensing magnet apparatus of claim 1 , wherein the separation inhibition unit includes a first grip unit complementarily formed with the plate and the sensing magnet claim 1 , and a second grip unit formed at an opposite side of the first grip unit claim 1 , where the first and second grip units are complementarily installed on the plate and the sensing magnet to physically grip the plate and the sensing magnet.4. The sensing magnet apparatus of claim 3 , wherein the first grip unit includes a grip rib extensively formed at a peripheral side of the plate claim 3 , bent to a direction facing the sensing magnet and formed thereinside with an accommodation groove unit; and ...

METHOD AND DEVICE FOR THE SENSOR-FREE POSITION DETERMINATION OF AN ELECTRONICALLY COMMUTATED ELECTRIC MACHINE

The invention relates to a method for determining a rotor position of a rotatory, multi-phase, electronically commutated electric machine (). Said electric machine () comprises several phase windings () which can be supplied with current by means of phase connectors. Said method consists of the following steps: phase currents and phase connections are identified on phase connections of the electric machine (); the induced currents on the phase connections of the electric machine () are determined from the identified phase currents and phase flows; the identified current indicator of the induced current is provided with respect to a Cartesian coordination system which is fixed to a stator by the induced currents; the position of the rotor is identified as a space indicator angle of the current indicator of the induced current provided with respect to the Cartesian coordination system which is fixed to the stator. 1114. A method for ascertaining an armature position of a rotary , polyphase , electronically commutated electric machine () , wherein the electric machine () has a plurality of phase windings () , which can be energized via phase connections , said method comprising the following steps:{'b': '1', 'determining phase voltages and phase currents at phase connections of the electric machine ();'}{'b': '1', 'ascertaining the induced voltages at the phase connections of the electric machine () from the determined phase voltages and phase currents;'}providing the voltage vector of the induced voltage with respect to a stator-fixed Cartesian coordinate system, said voltage vector being determined by the induced voltages;determining the armature position as a space vector angle of the voltage vector of the induced voltage, which voltage vector is provided with respect to the stator-fixed Cartesian coordinate system.2. The method as claimed in claim 1 , wherein the provision of the voltage vector of the induced voltage with respect to the stator-fixed Cartesian ...

METHOD FOR OPERATING A CAPACITIVE POSITION SENSOR AND CAPACITIVE POSITION SENSOR

A method for operating a capacitive position sensor includes providing excitation signals driving each conductive element. The excitation signals are periodic in 2π, with each set of conductive elements being provided with n different excitation signals. The different excitation signals differ in phase, wherein in a functionality check mode, the excitation signal that in a measurement mode is applied to one of the conductive elements in the functionality check mode is applied to a different one of the conductive elements. The different conductive element is the k-th conductive element counted from the one of the conductive elements, with k being an integer of 1 to n−1 and this shift of excitation signals is applied to all conductive elements. The capacitive position sensor includes a stator having a transmitter with N sets of conductive elements, each set having n conductive elements formed in a linear or circular arrangement thereon. 1. Method for operating a capacitive position sensor , the capacitive position sensor comprisinga stator, the stator comprising a transmitter and a receiver, the transmitter comprising N sets of conductive elements, each set comprising n conductive elements, the conductive elements of the transmitter formed in a linear or circular arrangement thereon,the receiver comprising a conductive plate formed thereon,a rotor, the rotor comprising a linear or circumferential modulated geometry, the stator and the rotor being arranged parallel to each other and being rotatable independently, the method comprising the step of providing each conductive element with an excitation signal, the excitation signals being periodic in 2π, each set of conductive elements being provided with n different excitation signals, the different excitation signals differing in phase, characterized in that in a functionality check mode the excitation signal that in a measurement mode is applied to one of the conductive elements in the functionality check mode is ...

Position detecting device

A position detecting device has an output circuit, which controls voltages of signal lines connecting a power supply and a ground by a power side transistor and a ground side transistor. An output signal line connects a connection point of the signal lines and an output terminal. A first comparator circuit outputs a signal “1” when a current flowing in the line between the power supply and the connection point is larger than a normal current flowing into the ground from the power supply in a normal state. A second comparator circuit outputs a signal “1” when a current flowing in the line between the connection point and the ground is larger than the normal current. When the signal “1” is output from the first comparator circuit or the second comparator circuit, a cutoff circuit turns off a switch disposed in the output signal line.

ROTATION CONTROL APPARATUS AND METHOD AND DISK DRIVING APPARATUS USING THE SAME

A rotation control apparatus includes: a controller configured to supply test currents to a plurality of different paths of a motor when the motor is stopped; and a stop position detector configured to detect a rotational position of the motor based on an order of current values of the test currents. The controller causes one of the test currents to flow through one of the plurality of different paths, measure time taken until the corresponding detection voltage reaches a reference voltage, and set electrical conduction time of the test currents based on a result of the measurement. 1. A rotation control apparatus comprising:a controller configured to supply test currents to a plurality of different paths of a motor including a stator having a plurality of coils and a magnetic rotor when the motor is stopped, the plurality of different paths including the plurality of coils; anda stop position detector configured to convert the test currents flowing through the plurality of paths into detection voltages for measurement, compare voltage values of the detection voltages, determine an order of current values of the test currents based on the comparison, and detect a rotational position of the motor based on the order,wherein the controller is further configured to cause one of the test currents to flow through one of the plurality of different paths, measure time taken until the corresponding detection voltage reaches a reference voltage, and set an electrical conduction time of the test currents based on a result of the measurement.2. The rotation control apparatus of claim 1 , wherein the stop position detector includes an amplifier configured to generate the detection voltage claim 1 , and the reference voltage is set to a median value or its neighborhood value of an output range of the amplifier.3. The rotation control apparatus of claim 2 , wherein input/output characteristics of the amplifier are changeable.4. The rotation control apparatus of claim 1 , wherein ...

Rotation Angle Sensor for Absolute Rotation Angle Determination Even Upon Multiple Revolutions

A rotation angle sensor for detecting an absolute rotation angle upon single or multiple revolutions includes a magnetic field sensor and an encoder arrangement. The magnetic field sensor detects at least two orthogonal magnetic field variables. The encoder arrangement is rotatable depending on the absolute rotation angle relative to the magnetic field sensor, such that the magnetic field detected by the magnetic field sensor is dependent on a relative angular position of the encoder arrangement with respect to the magnetic field sensor. The encoder arrangement is furthermore displaceable relative to the magnetic field sensor. The relative angular position and the relative translational position of the encoder arrangement with respect to the magnetic field sensor is determined from the at least two orthogonal magnetic field variables. The absolute rotation angle is determined by means of the relative angular position and the relative translational position.

ROTATION DETECTOR, WHEEL BEARING EQUIPPED THEREWITH AND PROCESS FOR MANUFACTURING THE SAME

A sensor assembly is sandwiched together with a rubber material mixed with a vulcanizing agent in a mold assembly including an upper mold and a lower mold. The upper and lower molds, while completely sandwiching the sensor assembly, are heated for a predetermined length of time, and a pressure is then applied to the sensor assembly to complete a compressive molding. 1. A rotation detecting device arranged in face-to-face relation with a metallic body or magnet body provided in a rotational member , the rotation detecting device comprising:a magnetic sensor;peripheral component parts electrically or mechanically connected with the magnetic sensor, the peripheral components including an electrode electrically connected with the magnetic sensor, a cable core line electrically connected with the electrode, a cable insulating sheath to electrically insulate the cable core line, and a portion of a cable covering to cover an exterior of the cable insulating sheath; anda fixture, made of a metallic material, to position the magnetic sensor and the peripheral component parts;the magnetic sensor, the peripheral component parts and the fixture being molded together so as to be covered by a thermoplastic elastomer or a material capable of exhibiting a rubber elasticity.2. The rotation detecting device as claimed in claim 1 , further comprising an electric terminal of the magnetic sensor claim 1 ,wherein the electric terminal or the electrode and the thermoplastic elastomer or the material capable of exhibiting the rubber elasticity are sealingly bonded together by the molding.3. The rotation detecting device as claimed in claim 1 , further comprising a connecting member to integrally connect the magnetic sensor and the fixture together claim 1 ,wherein the magnetic sensor, the peripheral component parts, the fixture and the connecting member are molded together so as to be covered by the thermoplastic elastomer or the material capable of exhibiting the rubber elasticity.4. The ...

ABSOLUTE POSITION RECORDING DEVICE OF MOTOR

An absolute position recording device of a motor includes a main spindle, a magnetic ring, a magnetic induction unit, an encoder, a counter, and an operation unit. The magnetic ring and the encoder are fixed on and rotated by the main spindle. The magnetic induction unit outputs square waves and the encoder outputs sine or cosine waves. The counter receives the square waves and calculates a number of rotations of the magnetic ring. The operation unit receives the sine or cosine waves and calculates an angular deflection relative to a standard position of the magnetic ring. The operation unit adds the angular deflection and the number of rotations and calculates an absolute angular position. 1. An absolute position recording device of a motor , comprising:a main spindle;a magnetic ring and a encoder set on the main spindle; the main spindle rotating the magnetic ring and the encoder, the magnetic ring surrounded by a plurality of magnets, and the encoder outputting signals in the form of sine or cosine waves according to rotations of the main spindle;a magnetic induction unit inducing a charge reflecting a change of magnetic poles of the magnets, and outputting signals in the form of square waves;a counter electronically connected to the magnetic induction unit to receive the signals in the form of square waves and calculate a cyclical number of revolutions of the magnetic ring according to the signals in the form of square waves; andan operation unit electronically connected to the encoder to receive the signals in the form of sine or cosine waves and calculate a deflected angle related to a standard position of the magnetic ring according to the signals in the form of sine or cosine waves; the operation unit electronically connected to the counter to add the deflected angle and the cyclical number calculated from the counter, and the operation unit calculating the absolute position of the motor according to a process of adding the deflected angle and the cyclical ...

METHOD AND A SYSTEM FOR DETERMINING THE ANGULAR POSITION OF A ROTARY ELEMENT, AND A BEARING INCLUDING SUCH A SYSTEM

This method determines an angular position of a rotary element in a system where a magnetic ring rotatably fastened to the rotary element in communication with multiple sensors each suitable for issuing a unitary electric signal representative of a magnetic field generated by the magnetic ring. At least two groups of sensors adapted to generate, based on the unitary sensor signals, at least one combined electric signal representative of the angular position of the magnetic ring. This method comprises; a) verifying the consistency the combined electric signal with at least one given rule b) assessing whether or not each group of sensors is correctly working based on the verification of step a); and if, a first group of sensors is not correctly working, disregarding its combined electric signal and relying on the combined electric signal of at least a second group of sensors for determining an angular position value. 113131515. A method for determining an angular position (θ) of a rotary element rotating with respect to a stationary element in a system where a magnetic ring rotatably fastened to the rotary element is arranged with respect to multiple sensors (CA-CA , CB-CB; CA-CA , CB-CB) each suitable for issuing a unitary electric signal representative of a magnetic field generated by the magnetic ring , the sensors are arranged in at least two groups (A , B) , each group of sensors being adapted to generate , on the basis of the unitary signals of its sensors , at least one combined electric signal (SA , SB) representative of the angular position of the magnetic ring , the method comprising the steps of:a) verifying, for each group of sensors (A, B), the consistency of its combined electric signal with at least one given rule;b) assessing whether or not each group of sensors (A, B) is correctly working on the basis of the verification of step a); and{'sub': 'c', 'c) if a first group of sensors (A) is considered not to be correctly working (FA=0), disregarding its ...

ANGLE DETECTING DEVICE

The detecting device comprises a rotation member with a magnet portion which generates a magnetic field having different polarities arranged alternately in a circumferential direction, a case having a bearing, an angle calculating device and an elastic member which biases the rotation member so that the rotation member is rotated, keeping a constant inclined angle relative to a central axis line of the bearing or a phase difference between a rotation phase of the rotation member and a rotation phase of the bearing rotating about the central axis line thereof with an inclined angle relative to the rotation member is kept constant regardless of the change of the rotation angle of the rotation member. 1. An angle detecting device comprising:a rotation member provided with a magnet portion which generates a magnetic field having polarities arranged alternately in a circumferential direction;a case having a bearing on which the rotation member is rotatably supported;an angle calculating means for detecting magnetic field components of the magnetic field in a plurality of different directions and calculating a rotation angle of the rotation member based on the detected magnetic field components; andan elastic member which biases the rotation member so that the rotation member is rotated, keeping a constant inclined direction relative to a central axis line of the bearing or biases the rotation member so that a phase difference between a rotation phase of the rotation member and a rotation phase of the bearing rotating about the central axis line thereof with the inclined direction relative to the rotation member is kept constant regardless of a change of the rotation angle of the rotation member.2. The angle detecting device according to claim 1 , wherein claim 1 ,the elastic member is in contact with the rotation member at one end and in contact with the case at the other end and whereinthe elastic member biases the rotation member in the central axis line direction of ...

SENSOR ARRANGEMENT FOR CAPTURUING A TORQUE

The invention relates to a sensor arrangement () for capturing a torque acting on a shaft (), wherein the sensor arrangement () comprises a sensor unit () with a sleeve (), on which at least one sliding element and at least one first sensor which is sensitive to magnetic fields are arranged, and a magnetic-flux unit () with two magnetic flux-conducting rings (), wherein the at least one sliding element is arranged between the magnetic flux-conducting rings (), wherein the sensor unit and the magnetic-flux unit () are rotated relative to one another during a rotation of the shaft (), and wherein the at least one sensor which is sensitive to magnetic fields captures a magnetic flux conducted by the rings (). 1142801101211304102136341386841001161322830410213668410011613214283028302830. A sensor arrangement for capturing a torque which acts on a shaft () , wherein the sensor arrangement ( , , , , ) comprises a sensor unit ( , , ) with a sleeve ( , ) on which at least one sliding element and at least a first magnetic-field-sensitive sensor are arranged , and a magnetic flux unit ( , , , , ) with two magnetic-flux-conducting rings ( , ) , wherein the sensor unit ( , , ) and the magnetic flux unit ( , , , , ) are rotated relative to one another when the shaft () rotates , and wherein the at least one magnetic-field-sensitive sensor captures a magnetic flux which is conducted by the rings ( , ) , wherein , with the at least one magnetic-field-sensitive sensor , a magnetic field which changes during a rotational movement is detected and is converted into a signal which is dependent on the torque , characterized in that the at least one sliding element made of plastic is arranged between the magnetic-flux-conducting rings ( , ) and slides radially between the magnetic-flux-conducting rings ( , ) with defined play.22830684100116132. The sensor arrangement as claimed in claim 1 , in which the at least one sliding element is mounted in a direct claim 1 , sliding and self-guiding ...

MEASURING ROTATION AND TILT OF A WHEEL ON AN INPUT DEVICE

Embodiments of the present invention include a roller for an input device, where the roller's absolute angular position is measured by a magnetic encoder. A magnet is attached to the roller, possibly inside the roller so as to make the embodiment more compact. In one embodiment, the magnetization is simple and low cost. Further, tight tolerances are not required, and such a system is easy to manufacture. In one embodiment, the sensor is covered by any non-ferromagnetic material, to protect it from foreign particles, and to reduce ESD. In one embodiment, the wheel consumes much less power than conventional wheels in input devices. In one embodiment, the tilting of the wheel is measured using the same sensor that is used for measuring the rotation of the wheel. In one embodiment, a ratcheting feel provided to the user when rotating the wheel is synchronized with the rotation signal. 123.-. (canceled)24. A system comprising:an input device including a housing;one or more processors;a wheel disposed in the housing and configured to rotate and tilt;a magnet coupled to the wheel such that the magnet rotates with the wheel, the magnet configured to generate a magnetic field;a sensor coupled to and controlled by the processor, the sensor configured to measure an amplitude of the magnetic field sequentially in a plurality of directions; and determine a direction of the magnetic field based on the sensor measurement;', 'generate a first signal based on the direction of the magnetic field;', 'determine a value of an amplitude of the first signal; and', 'generate a second signal based on the amplitude of the first signal, the first signal providing information regarding rotation of the wheel, and the second signal providing information regarding the tilt of the wheel., 'one or more non-transitory computer-readable storage mediums containing instructions configured to cause the one or more processors to25. The system of wherein the one or more processors are disposed in the ...

Magnetic Logic Units Configured to Measure Magnetic Field Direction

An apparatus includes circuits, a field line configured to generate a magnetic field based on an input, a sensing module configured to determine a parameter of each circuit, and a magnetic field direction determination module configured to determine an angular orientation of the apparatus relative to an external magnetic field based on the parameter. Each circuit includes multiple magnetic tunnel junctions. Each magnetic tunnel junction includes a storage layer having a storage magnetization direction and a sense layer having a sense magnetization direction configured based on the magnetic field. Each magnetic tunnel junction is configured such that the sense magnetization direction and a resistance of the magnetic tunnel junction vary based on the external magnetic field. The parameter varies based on the resistances of the multiple magnetic tunnel junctions. The magnetic field direction determination module is implemented in at least one of a memory or a processing device. 1. An apparatus , comprising:a plurality of circuits, each of the plurality of circuits including multiple magnetic tunnel junctions, each magnetic tunnel junction including a storage layer having a storage magnetization direction and a sense layer having a sense magnetization direction; the sense magnetization direction of each magnetic tunnel junction is configured based on the magnetic field; and', 'each magnetic tunnel junction is configured such that the sense magnetization direction and a resistance of the magnetic tunnel junction vary based on an external magnetic field;, 'a field line configured to generate a magnetic field based on an input, whereina sensing module configured to determine a parameter of the each of the plurality of circuits, wherein the parameter of the each of the plurality of circuits varies based on the resistances of the multiple magnetic tunnel junctions included in the each of the plurality of circuits; anda magnetic field direction determination module configured ...

ROTATION ANGLE DETECTOR

A rotation angle detector includes: a magnet attached to a rotating shaft and magnetized in a certain direction orthogonal to an axis of the rotating shaft; and a non-rotary magneto-electric transducer placed to be opposed to an end surface of the magnet, and configured to detect a rotation angle of the rotating shaft in cooperation with the magnet through magneto-electric transduction. A concave curved surface is formed in the end surface of the magnet in order to make a magnetic flux of a magnetic field facing the end surface of the magnet closer to the magnet and flattened. Accordingly, it is possible to provide a rotation angle detector which is compact in size and has a stable accuracy for detecting the rotation angle, by making the curvature of the magnetic flux near the end surface of the magnet small and placing the magneto-electric transducer in that location. 1. A rotation angle detector comprising:a magnet attached to a rotating shaft, and magnetized in a certain direction orthogonal to an axis of the rotating shaft; anda non-rotary magneto-electric transducer placed so as to be opposed to an end surface of the magnet, and configured to detect a rotation angle of the rotating shaft in cooperation with the magnet through magneto-electric transduction, whereina concave curved surface is formed in the end surface of the magnet in order to make a magnetic flux of a magnetic field facing the end surface of the magnet closer to the magnet and flattened.2. The rotation angle detector according to claim 1 , whereinthe magnet is made from a magnetic synthetic resin, andthe magnet is molded on an end portion of the rotating shaft.3. The rotation angle detector according to claim 1 , whereinthe concave curved surface is formed as a concave spherical surface having a center on the axis of the rotating shaft, anda magnetism sensing center of the magneto-electric transducer is placed at or in a vicinity of the center. The present application claims priority under 35 ...

Rotary Position Sensor

A sensor assembly for sensing a movable object which, in one embodiment, includes a housing defining an interior cavity. A rotor is retained in the cavity. The rotor defines a central bore and a magnet is mounted in an off-center pocket defined by the rotor. The rotor is coupled to the shaft of the movable object whose position is to be measured. A sensor is also retained in the cavity in a relationship at least partially overlying the magnet and adapted to sense at least the direction of the magnetic field generated by the magnet to generate an electrical signal indicative of the position of the movable object. In another embodiment, the rotor and sensor are mounted in separate interior housing cavities separated by an interior housing wall. 1. A sensor assembly for sensing the position of a movable object , comprising:a housing defining an interior cavity and including a wall defining an aperture;a sensor in the cavity;a rotor in the cavity, the rotor including a collar, the collar being aligned with the aperture in the wall of the housing;a magnet on the rotor, the magnet including at least a first straight side surface and the magnet generating a magnetic field extending through and in a direction generally normal to the first straight side surface of the magnet irrespective of the position of the magnet and the magnet at least partially overlying the sensor; andthe magnet and the sensor being movable relative to each other and the sensor being adapted to sense the magnitude and direction of the magnetic field and generate an electrical signal in response to the magnetic field sensed by the sensor.211. The sensor assembly of claim , further comprising a plate secured to the housing and covering the cavity , the plate defining an aperture in alignment with the collar of the rotor.3. The sensor assembly of claim 1 , wherein the housing defines an interior collar and the collar on the rotor abuts against and rotates relative to the collar in the housing.4. The ...

System and method of locating an x-ray imaging apparatus and corresponding x-ray imaging apparatus

A system for determining the position of an X-ray imaging apparatus mounted on an automatic mobile device is provided. The system comprises at least one mechanical link jointed to a reference point and to the X-ray imaging apparatus, and at least one measuring device configured to measure a variation of rotation angles of the at least one mechanical link relative to the reference point and to the X-ray imaging apparatus when moved.

ALIGNMENT CORRECTION SYSTEM AND METHOD OF USE

A system and method is provided for correcting alignment of a product on a tool and, more particularly, to a system and method for correcting alignment of a wafer on a chuck of a tool. The system is a tool including at least one contact near a circumference of the tool and a grounded contact proximate to the at least one contact. 1. A tool , comprising:at least one contact near a circumference of the tool;a grounded contact proximate to the at least one contact; an independently moveable inner cylinder or plate on the tool; and', 'a computing infrastructure having executable code configured to calculate an angle of displacement of a wafer based on measured resistances of opposing branches of the at least one contact from a point of electrical contact with the wafer, wherein', is coupled to ammeters via low resistance connecting wires comprised of one of silver, copper, aluminum, gold and platinum,', 'is at least one arc shaped contact and is made of one of Manganin, copper, platinum and aluminum, and', 'is at least two contacts and the computing infrastructure calculates a centering alignment of the wafer on the tool based on a triangulation of contacts on a backside of the wafer and two of the at least two contacts,, 'the at least one contact, 'the at least one contact and grounded contact form a closed circuit when a contact on a back of a wafer bridges a gap therebetween,', 'the independently moveable inner cylinder or plate is configured to lift, rotate and lower a wafer to adjust an alignment angle of the wafer, and', 'the independently moveable inner cylinder or plate is controllable by a control., 'at least one spring on an underside of the contact to provide an upward biasing force;'}2. A tool , comprising:at least one contact near a circumference of the tool;a grounded contact proximate to the at least one contact;at least one spring on an underside of the contact to provide an upward biasing force; and calculates an angle of displacement of a wafer based ...

ROTATION ANGLE AND TORQUE DETECTION DEVICE

A rotation angle and torque detection device includes a first rotating body, a second rotating body, a first magnet, a first magnetism detecting element, a first detecting body, a second magnet, a second magnetism detecting element, a second detecting body, a third magnet, a third magnetism detecting element, and a control circuit. The control circuit outputs a rotation torque signal and a rotation angle signal. The first magnetism detecting element outputs a torque detection signal. 1. A rotation angle and torque detection device comprising:a first rotating body;a second rotating body that rotates together with the first rotating body;a first magnet mounted on the first rotating body;a first magnetism detecting element for detecting magnetism of the first magnet, and outputting it as a torque detection signal;a first detecting body that rotates together with the first rotating body or the second rotating body;a second magnet mounted on the first detecting body;a second magnetism detecting element for detecting magnetism of the second magnet and outputting it as a first angle detection signal;a second detecting body that rotates together with the first detecting body or the first rotating body;a third magnet mounted on the second detecting body;a third magnetism detecting element for detecting magnetism of the third magnet and outputting it as a second angle detection signal; anda control circuit coupled to the first magnetism detecting element, the second magnetism detecting element, and the third magnetism detecting element,wherein the first magnetism detecting element outputs the torque detection signal to the control circuit and to outside of the rotation angle and torque detection device; andthe control circuit calculates rotation torque of the first rotating body from the torque detection signal, calculates a rotation angle of the first rotating body from the first angle detection signal and the second angle detection signal, and outputs a rotation torque ...

PROCESS FOR DETERMINING THE POSITION OF THE ROTOR OF AN ELECTRIC MACHINE

A process for determining the position, in particular the angular position, of the rotor of an electric machine in relation to the stator. A first measured value of the position is determined according to a first method. Another measured value is simultaneously determined according to at least one other measurement method, and a mean value for the position of the rotor is determined from the measured values. Preferably, the mean value is determined taking into account weighting factors that take into consideration different spreads of the measured values. 110-. (canceled)11. A process for determining a position of a rotor , especially the rotational position of the rotor , of an electric machine in relation to a stator , the process comprising the steps of: determining a first measurement value (α) of the position by a first measurement method; simultaneously determining a second measurement value (α) by a second measuring method; and determining an average value (α) of the position of the rotor from the two measurement values.12. The process according to claim 11 , including determining the average value (α) taking into consideration different weighting factors (A claim 11 , B) claim 11 , which take into account ranges of variation of the measurement values (α claim 11 , α).13. The process according to claim 12 , including forming a periodic function from the measurement values (α claim 12 , α) as argument values; function values claim 12 , multiplied by the weighting factors claim 12 , being added together; and claim 12 , for determining of the average value (α) from the weighted sum as an argument claim 12 , a value of an inverse function of the periodic function is formed.14. The process according to claim 13 , including determining the average value (α) in the following manner:{'br': None, 'i': A', '+B, 'sub': 1', '2, 'sin αsin α=sin α'}{'br': None, 'i': A', '+B, 'sub': 1', '2, 'cos αcos α=cos α'}{'br': None, 'i': A', '+B', 'A', '+B, 'sub': 1', '2', '1', '2, ' ...

THROTTLE OPENING DETECTION DEVICE

A throttle opening detection device includes a rotor which is rotated in an interlocking manner by manipulation of an acceleration grip which is mounted together with the rotor on a handlebar. First magnets are arranged near a peripheral portion of one side surface of the rotor along the circumferential direction of the rotor, while second magnets are respectively laminated to the first magnets, and have opposite polarities to the first magnets. The first magnets with the second magnets laminated thereto are disposed with a set spacing therebetween. A magnetic sensor for detecting a magnetic force generated by all the magnets is arranged to oppose, with a clearance therebetween, the one side surface of the rotor in which the magnets are arranged, in an axial direction of the rotor. 1. A throttle opening detection device comprising:a rotor which is mounted on a handle bar and rotatable in an interlocking manner by manipulation of an acceleration grip also mounted on the handle bar;at least two magnets which are mounted on the rotor;a magnetic sensor which detects a magnetic force generated by the magnets; anda housing which houses the rotor and the magnetic sensor and is mounted on the handle bar, whereinthe magnets are arranged in the vicinity of a peripheral portion of one side surface of the rotor and adjacent to each other along the circumferential direction of the rotor, andthe magnetic sensor is arranged to face the one side surface in an opposed manner in the axial direction of the rotor.2. The throttle opening detection device according to claim 1 , wherein the magnetic sensor is arranged at a position on a side of the rotor opposite to the acceleration grip with the rotor sandwiched therebetween.3. The throttle opening detection device according to claim 1 , wherein the magnets are spaced apart from each other along the circumferential direction of the rotor.4. The throttle opening detection device according to claim 1 , wherein two of said magnets are ...

POSITION SENSING TRANSDUCER

A number of position sensors are disclosed. The position sensors are arranged to inductively sense the position of a target relative to a number of sensor coils. In one embodiment, the target comprises first, second and third portions positioned on either side of an axis of rotation, such that lateral misalignment between the target and the sensor is compensated between the interaction of the different portions and the sensor coils. In another embodiment, the target comprises first and second portions that are separated along the measurement path such that in a first range of relative positions, the first target portion is adjacent the one or more sensor coils and in a second range of relative positions, the second target portion is adjacent the one or more sensor coils. The first and second target portions are asymmetrically arranged relative to the sensor coils such that when each target portion is adjacent the same portion of the sensor coils, different signals are induced in the sensor coils. 1. A transducer for a rotary position sensor comprising:one or more coils arranged relative to a sensor axis between an inner radius and an outer radius;a target having first, second and third portions that are circumferentially spaced apart from each other adjacent the one or more coils and that are arranged relative to a target axis: i) so that said first portion is positioned between said inner and outer radii during the relative rotation of said target and said one or more coils; and ii) so that said second and third portions are positioned adjacent said inner radius or said outer radius during the relative rotation of said target and said one or more coils;wherein said target is arranged to magnetically couple with said coils so that signals are generated that depend on the relative rotational position of the target and the one or more coils; andwherein said second and third portions of the target are arranged on either side of the target axis to compensate for ...

APPARATUS FOR POSITION ASCERTAINMENT

The position of a moveable component which is coupled to an electric machine is ascertained, where the electric machine serves, in the event of manual movement of the component, as a generator for generating electric energy for a position ascertainment arrangement. The coupling of the electric machine with the component is configured such that a magnetic attraction reaction and/or repelling reaction between magnetic and/or magnetized parts of a rotor and of a stator of the electric machine results in a short-term acceleration of the rotor, which is unhindered by the coupling, and in a resulting short-term increase of the electric energy generated. 11323282310112108. An apparatus () for ascertaining the position of a moveable component () coupled to an electrical machine () , wherein with a manual movement of the component () the electrical machine () is used as a generator for generating electrical energy for a position ascertainment arrangement and wherein the coupling () of the electrical machine () with the component () is embodied such that a magnetic attraction reaction and/or repelling reaction between magnetic and/or magnetized parts of a rotor () and a stator () of the electrical machine () result in a short-term acceleration of the rotor () which is unhindered by the coupling () and a short-term increase in the generated electrical energy resulting therefrom.2123. The apparatus () as claimed in claim 1 , characterized in that the electrical machine () is used as a drive motor for moving the component () in the event of an adequate electrical power supply.31111012. The apparatus () as claimed in or claim 1 , characterized in that the stator () and/or the rotor () comprises at least one permanent magnet ().411112105. The apparatus () as claimed in claim 3 , characterized in that the stator () is embodied as a permanent magnet stator and at least one permanent magnet () is arranged on the rotor () at right angles to a rotor axle ().51101211. The apparatus () ...

ROTATION ANGLE DETECTION DEVICE, TORQUE DETECTION DEVICE, AND ELECTRIC POWER STEERING DEVICE

A rotation angle detection device includes a rotation angle sensor and detection means. Each of sensor signals of the rotation angle sensor has a composite waveform of an nth multiple angle component corresponding to a multiple of the number of phases, and an mth multiple angle component corresponding to a non-multiple of the number of phases. The detection means subtracts an average value of the respective sensor values from the respective sensor values, and extracts values of the mth multiple angle components from the respective sensor values to detect an electric angle having a multiplication factor of angle of m, and converts m mechanical angle estimated values which are estimated based on the electric angle into values of the nth multiple angle component, and compares the converted values with the average value to detect a mechanical angle with one mechanical rotation of a detection target as one cycle. 1. A rotation angle detection device , comprising:a rotation angle sensor configured to output sensor signals of three or more phases set so that values of the signals are changed according to a rotation angle of a detection target, and phases of signal changes corresponding to the rotation angle are equally shifted; anddetection means configured to detect the rotation angle based on the respective sensor signals,{'sup': th', 'th, 'wherein each of the sensor signals has a composite waveform of an nmultiple angle component corresponding to a multiple of the number of phases, and an mmultiple angle component corresponding to a non-multiple of the number of phases,'}wherein n is an integer and m is an integer, and{'sup': th', 'th, 'wherein the detection means subtracts an average value of the respective sensor values from the respective sensor values, and extracts values of the mmultiple angle components included in the respective sensor values to detect an electric angle having a multiplication factor of angle of m, and converts m mechanical angle estimated values ...

POSITION DETECTION DEVICE

In a position detection device, an amplitude modulation is executed for AC excitation signals Sc using modulation wave signals. Differential amplifiers execute a voltage conversion of the modulated wave signal Sin, Cos to digital data SIN, COS and transmit them to a microcomputer. The microcomputer multiplies the modulated wave signals SIN, COS with parameters cos φ, sin φ, and executes a subtraction of the multiplied value to obtain an error-correlation value ε. An angle calculations section in the microcomputer receives a detected value εc obtained by multiplying the error-correlation value ε with a binary detection signal Rd. The binary detection signal Rd corresponds to a positive sign or a negative sign of the signal Sc. The sampling time of the AC excitation signal Sc is set to a time at which an absolute value of the AC excitation signal Sc exceeds a regulated value. 2. The position detection device according to claim 1 , wherein the alternating current excitation signal sampling section periodically executes the sampling of the alternating current excitation signal on the basis of a pattern of a predetermined sampling interval claim 1 , and the avoidance section comprises a sampling time setting section configured to set the pattern of the predetermined sampling interval so that the sampling time does not contain a sampling time at which an absolute value of the alternating current excitation signal is not more than a regulated value.3. The position detection device according to claim 1 , wherein the avoidance section comprises a sampling time changing section configured to adjust a next sampling time on the basis of the sampling result of the alternating current excitation signal sampling section so that the sampling time does not contain a sampling time at which an absolute value of the alternating current excitation signal is not more than a regulated value.4. The position detection device according to claim 1 , wherein the avoidance section comprises a ...

Magnetic Field Angle Measurement Apparatus, Rotation Angle Measurement Apparatus, and Rotation Machine, System, Vehicle, and Vehicle Drive Apparatus Each Using Same Rotation Angle Measurement Apparatus

In a rotation angle measurement apparatus using a bridge configuration of a magneto-resistance element, a correct angle is not output when a fault occurs. For this reason, there is a problem in which an upper-layer system using the same is broken down. However, in order to solve this problem, there is provided a rotation angle measurement apparatus including a SIN bridge and a COS bridge each of which includes a magneto-resistance element and a detection unit, wherein the detection unit outputs an angle signal based on a signal output from a normal half bridge when a fault occurs in any one of respective half bridges of the COS bridge or the SIN bridge. 1. A magnetic field angle measurement apparatus comprising:a COS bridge and a SIN bridge each of which includes a magneto-resistance element; anda detection unit,wherein the detection unit outputs an angle signal based on a signal output from a normal half bridge when a fault occurs in any one of respective half bridges of the COS bridge or the SIN bridge.2. The magnetic field angle measurement apparatus according to claim 1 , further comprising:a unit for identifying the normal half bridge.3. The magnetic field angle measurement apparatus according to claim 2 ,wherein the detection unit outputs a fault transmission signal when outputting an angle signal based on the signal output from the normal half bridge.4. The magnetic field angle measurement apparatus according to claim 3 ,wherein a stop transmission signal is provided in addition to the fault transmission signal.5. The magnetic field angle measurement apparatus according to claim 3 ,wherein the fault transmission signal is output as a digital signal by using the same signal line as that of the angle signal.6. A rotation angle measurement apparatus comprising:a magnetic flux generator which is attached to a rotation body; and{'claim-ref': {'@idref': 'CLM-00001', 'claim 1'}, 'the magnetic field angle measurement apparatus according to ,'}wherein the rotation ...

Method and device for determining the absolute position of a movable body

In a method for determining absolute position of a mobile element in reference to two magneto-sensitive sensors, having a source of a magnetic field fastened to the element, a first sensor signal and a second sensor signal are measured with one magneto-sensitive sensor each. An amplitude ratio of the respective sensor signals and the off-set values about the respective zero point of the sensor signals are determined from the minimum and maximum values of the sensor signals, and from these values, scaled sensor signals are calculated that form a sum signal and a difference signal, which are scaled, with the determination of the minimum and the maximum values occurring by a relative movement of the element over a full range of motion, and an absolute position is calculated via the scaled sum signal and the scaled difference signal.

Stroke amount detection device

A stroke amount detection device includes a yoke, a magnetic flux generation section, and a magnetism detection section. The yoke has a protruding section that protrudes to outside the yoke. The magnetic flux generation section is located in the yoke. The magnetism detection section is disposed between the magnetic flux generation section and the protruding section. The magnetism detection section is disposed at a fixed position with respect to the magnetic flux generation section. The magnetism detection section outputs a signal in accordance with a magnetic flux density generated due to a relative movement of the yoke with respect to the magnetism detection section.

CAPACITIVE ROTARY TRANSDUCER

A capacitive rotary encoder has a stator and a rotor as well as stator electrodes firmly arranged at the stator on an encoding path coaxial to the rotor axis, and coupling electrodes arranged at the rotor. The coupling electrodes are guided over the stator electrodes at a small axial distance from the encoding path by rotation of the rotor, wherein they each cover stator electrodes adjacent in the peripheral direction and connect the latter capacitively to each other. Interrogation electronics detects for each of the stator electrodes a capacitive coupling with an adjacent stator electrode caused by a coupling electrode of the rotor. This permits the reliable detection of the angular position of the rotor both statically and dynamically. 1. A capacitive rotary encoder having a stator and a rotor as well as stator electrodes firmly arranged at the stator on an encoding path coaxial to the rotor axis , each of these stator electrodes being electrically separated from an adjacent stator electrode , and coupling electrodes which are arranged at the rotor and are electrically separated from each other , the coupling electrodes being guided over the stator electrodes at a small axial distance from the encoding path when the rotor is rotated and each covering stator electrodes adjacent in the peripheral direction and connecting the latter capacitively to each other , and having interrogation electronics which detects for each of the stator electrodes a capacitive coupling with an adjacent stator electrode caused by a coupling electrode of the rotor.2. The rotary encoder according to claim 1 , wherein the stator electrodes are arranged at equal angular distances along the encoding path.3. The rotary encoder according to claim 1 , wherein the coupling electrodes have a length claim 1 , as measured in the peripheral direction claim 1 , which corresponds approximately to the peripheral length of two adjacent stator electrodes.4. The rotary encoder according to claim 1 , ...

RESOLVER

A resolver according to the invention includes a stator provided with a plurality of teeth, and first to third phase output coils wound around the teeth. When voltages induced in the first to third phase output coils change based on rotation of a rotor, voltage signals corresponding to an electrical angle of the rotor are output from the output coils. One of the first to third phase output coils is wound around each of the teeth. With respect to each of the phases, the distribution of the numbers of turns of each phase output coils, among the first to third phase output coils, is set to a sinusoidal distribution with respect to the electrical angle of the rotor. 1. A resolver including a stator that surrounds a rotor and that is provided with a plurality of teeth , and multiple phase output coils that are wound around the teeth , the resolver being configured such that voltages induced in the respective phase output coils change due to changes in magnetic fluxes applied to the multiple phase output coils based on rotation of the rotor , voltage signals corresponding to an electrical angle of the rotor are output from the multiple phase output coils , and a shaft angle multiplier is set to 2× or more , wherein ,one of the multiple phase output coils is wound around each of the teeth; andwith respect to each of the phases, a distribution of the numbers of turns of each phase output coils for the corresponding teeth is a sinusoidal distribution with respect to the electrical angle of the rotor.2. The resolver according to claim 1 , wherein claim 1 , with respect to each of the phases claim 1 , winding positions of each phase output coils for the corresponding teeth are dispersed in a circumferential direction of the rotor.3. The resolver according to claim 1 , wherein claim 1 , when one phase output coils claim 1 , among the multiple phase output coils claim 1 , are wound around the teeth of which positions in electrical angle of the rotor coincide with each other ...

ANGLE SENSOR

An angle sensor includes a sensor rotor formed with a planar coil and a sensor stator including a multi-X type planar coil placed to face a surface of the sensor rotor. On a stator substrate of the sensor stator are provided forward-direction planar coils and reverse-direction planar coils, and positive and negative terminals adjacently arranged. The forward-direction and reverse-direction planar coils are connected in series through connecting wires. One of both ends of the series-connected planar coils is connected to the positive terminal through the wire and the other end is connected to the negative terminal through the wire. The wires are arranged along arrangement of the series-connected planar coils but in a range less than a full circle of the arrangement. A turn-back connecting wire extending from one end of the series of planar coils is arranged along the other connecting wire and connected to the negative terminal. 1. An angle sensor comprising:a sensor rotor to be mounted on a rotary shaft and having a surface on which a planar coil is formed; anda sensor stator placed with a surface facing the surface of the sensor rotor, a stator substrate;', 'a plurality of forward-direction planar coils each wound in a spiral form in a forward direction and a plurality of reverse-direction planar coils each wound in a spiral form in a reverse direction opposite to the forward direction, the forward-direction planar coils and the reverse-direction planar coils being formed on the stator substrate and electrically connected so that the reverse-direction planar coils are in opposite phase to the forward-direction planar coils;', 'a positive terminal and a negative terminal provided to be connectable to an external device; and', 'connecting wires including a turn-back connecting wire and other connecting wires,, 'wherein the sensor stator includeswherein the forward-direction planar coils and the reverse-direction planar coils are respectively alternately arranged in a ...

IMPULSE RING FOR A BEARING ASSEMBLY, BEARING ASSEMBLY COMPRISING SUCH AN IMPULSE RING AND ROTARY ELECTRICAL MACHINE COMPRISING SUCH A BEARING ASSEMBLY

This impulse ring () for a bearing assembly comprising a rotative element on which the impulse ring () is mounted, is rotatable with respect to a fixed sensing element adapted to detect a magnetic field generated by the impulse ring (). The impulse ring () comprises at least one pair of magnetic poles (N, S) or at least one magnet () with north poles (N) and south poles (S) alternatively arranged along its circumference. The intensity of the magnetic field generated by the north poles (N) is different from the intensity of the magnetic field generated by the south poles (S). 12. An impulse ring () for a bearing assembly comprising:a rotative element on which the impulse ring is mounted, rotatable with respect to a fixed sensing element adapted to detect a magnetic field (Br) generated by the impulse ring, the impulse ring having at least one pair of magnetic poles (N, S) or at least one magnet with north poles (N) and south poles (S) alternatively arranged along the circumference of the impulse ring, whereinthe intensity of the magnetic field (Bnp) generated by the north poles (N) is different from the intensity of the magnetic field (Bsp) generated by the south poles (S).2. The impulse ring according to claim 1 , wherein all the north poles (N) have the same volume claim 1 , wherein all the south poles (S) have the same volume claim 1 , and wherein the north poles (N) and the south poles (S) have different volumes.3. The impulse ring according to claim 1 , wherein the north poles (N) and south poles (S) cover angular sectors having different apex angles.4122. The impulse ring according to claim 1 , wherein the north poles (N) and south poles (S) have different thicknesses (t claim 1 , t) with respect to a radial direction (Y-Y′) of the impulse ring ().5. The impulse ring according to claim 1 , wherein the north poles (N) and the south poles (S) have different widths claim 1 , with respect to a direction parallel to the rotation axis (X-X′) of the impulse ring.6. ...

DETERMINING THE ANGULAR POSITION OF ROTOR

An angular position transmitter determines the angular position of the rotor of a motor using at least one magnet indirectly or directly connected to the motor shaft and at least one magnetically sensitive storage unit having a plurality of storage cells arranged such that at least some of the storage cells are magnetized by the magnet. The storage cells are read, and the angular position is determined from a geometric position of the magnetized cells. 113-. (canceled)14. A method for determining the angular position of a rotor of a motor , comprising:connecting at least one magnet indirectly or directly to a motor axle;arranging at least one magnetically sensitive storage device with a number of storage cells, such that at least some of the storage cells are magnetized by the magnet;reading the storage cells; anddetermining the angular position from a geometric position of magnetized storage cells in the at least one magnetically sensitive storage device.15. The method as claimed in claim 14 , wherein said determining uses at least one statistical method to determine the angular position.16. The method as claimed in claim 14 , wherein the magnet is magnetized centrically and arranged eccentrically with respect to the motor axle.17. The method as claimed in claim 14 , further comprising storing a number of rotations of the motor axle in a non-volatile storage device.18. The method as claimed in claim 17 , wherein the at least one magnetically sensitive storage device is a non-volatile storage device and the number of rotations is stored in at least one storage cell not magnetized by the magnet.19. The method as claimed in claim 18 , wherein the at least one magnetically sensitive storage device includes at least one shielded storage cell that is shielded from being magnetized by the magnet.20. An angular position transmitter for determining the angular position of a rotor of a motor having a motor axle claim 18 , comprising:at least one magnet connected, during ...

SENSOR FOR MEASURING ANGULAR POSITION, AND MEASUREMENT COMPENSATION METHOD

Method for compensating a reference measurement including a measurement of angular position α and a measurement of time T that are simultaneous at the time t for an angular position sensor of the type including a toothed wheel, includes the following steps: determination of a first measurement α of corresponding angular position at the moment in time t when a reference measurement is desired; triggering of a software acquisition function; substantially simultaneous acquisitions of a second measurement α′ of the angular position and of a measurement T of the time by software acquisition at a time t estimation of an error ΔT; and calculation of the compensated measurement of time, TTΔT. A Sensor for measuring angular position, of the type including a toothed wheel, implementing such a compensation method is described. 111. A method for compensating a reference measurement comprising a measurement of angular position α and a measurement of time T that are simultaneous at a moment in time t , for an angular position sensor of the type comprising a toothed wheel , characterized in that it comprises the following steps:{'b': '1', 'determination of a first measurement α of the angular position at the moment in time t when a reference measurement is desired,'}triggering of a software acquisition function, taking into account said function resulting in a time delay Δt,{'b': 2', '2, 'substantially simultaneous acquisitions of a second measurement α′ of the angular position and of a measurement T of the time by software acquisition at the time t,'}estimation of a time error ΔT,{'b': 1', '2, 'calculation of the measurement of time, T=T−ΔT.'}31. The method as claimed in claim 1 , where the determination of the first measurement of angular position α comprises a hardware acquisition carried out by a hardware device performing an acquisition of the value of angular position at the moment in time t when a reference measurement is desired claim 1 , and a software read of said ...

Torque Angle Sensor

A torque angle sensor according to an exemplary embodiment of the present disclosure includes a torque sensor unit and an angle sensor unit at a housing centrally arranged with a rotation shaft, the torque sensor unit including a stator installed inside the housing, a torque magnet rotatably installed at a center of the stator in conjunction with rotary operation of the rotation shaft, a collector installed at the housing to transmit a magnetic field of the torque magnet, a magnetic device module formed with an individually operating first magnetic device and a second magnetic device in one package to detect the magnetic field transmitted by the collector, and a PCB (Printed Circuit Board) mounted with the magnetic device module, wherein the PCB is arranged to a direction perpendicular to an axial direction of the rotation shaft and installed at a distal end with the magnetic device module. 1. A torque angle sensor , the torque angle sensor comprising: a housing centrally arranged with a rotation shaft; a torque sensor unit installed inside the housing to detect a torque change between an input shaft and an output shaft; and an angle sensor unit installed inside the housing to detect an angle change between the input shaft and the output shaft , wherein each of the torque sensor unit and the angle sensor unit is installed at a different section of the housing.2. The torque angle sensor of claim 1 , wherein the torque sensor unit includes a stator installed inside the housing claim 1 , a torque magnet rotatably installed at a center of the stator in conjunction with rotary operation of the rotation shaft claim 1 , a collector installed at the housing to transmit a magnetic field of the torque magnet claim 1 , a magnetic device module formed with an individually operating first magnetic device and a second magnetic device in one package to detect the magnetic field transmitted by the collector claim 1 , and a PCB (Printed Circuit Board) mounted with the magnetic ...

Rotation angle detection device

Provided is a rotation angle detection device capable of obtaining a detection result in a wider angle range with high accuracy. A rotation angle detection device 1 is provided with a part to be detected 4 which is attached to a throttle shaft S by a rotor 3 , and a Hall IC 5 which detects magnetic flux components of the part to be detected 4 . The Hall IC 5 is provided with a magnetism collecting plate 51 which is disposed facing the part to be detected 4 and extends along the rotation surface of the part to be detected 4 , and Hall elements 52 which detect the magnetic flux components of the part to be detected 4 , and output a signal corresponding to the rotation position of the throttle shaft S on the basis of the results of the detection by the Hall elements 52 . The Hall elements 52 a, 52 c each detect a magnetic flux component in an X-axis direction passing through the rotation axis of the throttle shaft S. The Hall elements 52 b, 52 d each detect a magnetic flux component in the Y-axis direction passing through the rotation axis of the throttle shaft S. The part to be detected 4 is configured by combining a semicircular yoke 41 with a semiannular magnet 42.

ROTATION ANGLE DETECTION DEVICE

A rotation angle detection device includes a magnetic field generation section, a yoke, and a magnetism detection section. The magnetic field generation section has a first end portion and a second end portion. The yoke has such a tube shape that the magnetic field generation section and a rotation axis of a rotating body are located therein. The yoke has a gap at a part in a circumferential direction in a cross section perpendicular to the rotation axis. The magnetism detection section is disposed in the gap and outputs an electrical signal in accordance with a magnetic field strength in the gap. The magnetic field generation section is disposed in such a manner that a magnetic force line passing through the magnetic field generation section passes through the rotation axis regardless of the rotation angle of the rotating body and the rotation axis passes through the first end portion. 1. A rotation angle detection device that detects a rotation angle of a rotating body with respect to a supporting member , comprising:a magnetic field generation section fixed to one of the rotating body and the supporting member, the magnetic field generation section having a first end portion at which one of magnetic poles is located and a second end portion at which the other of magnetic poles is located;a yoke made of magnetic material, the yoke having such a tube shape that the magnetic field generation section and a rotation axis of the rotating body are located therein, the yoke having a gap at a part in a circumferential direction in a cross section perpendicular to the rotation axis, the yoke being fixed to the other of the rotating body and the supporting member; anda magnetism detection section disposed in the gap, the magnetism detection section outputting an electrical signal in accordance with a magnetic field strength in the gap which changes with a rotation of the rotating body, whereinthe magnetic field generation section is disposed in such a manner that a magnetic ...

Single-Package Bridge-Type Magnetic-Field Angle Sensor

A single-package bridge-type magnetic-field angle sensor comprising one or more pairs of magnetic tunnel junction sensor chips rotated relative to each other by 90 degrees in order to detect two magnetic field components in orthogonal directions respectively is disclosed. The magnetic-field angle sensor may comprise a pair of MTJ full-bridges or half-bridges interconnected with a semiconductor package lead. The magnetic-field angle sensor can be packaged into various low-cost standard semiconductor packages.

ROTATION ANGLE SENSOR

A rotation angle sensor outputs detection signals based on a rotation angle of a rotary shaft. The detection signals that are output from the rotation angle sensor include first to fourth detection signals that sinusoidally change with the rotation angle of the rotary shaft and that are different in phase from one another. Here, a phase difference between the first detection signal and the second detection signal and a phase difference between the third detection signal and the fourth detection signal are each set to 90°. In addition, a phase difference between the first detection signal and the third detection signal and a phase difference between the second detection signal and the fourth detection signal are each set to 45°. 1. A rotation angle sensor that outputs detection signals corresponding to a rotation angle of a rotary shaft , whereinthe detection signals are first to fourth detection signals that sinusoidally change with respect to the rotation angle of the rotary shaft and that are different in phase from one another; anda phase difference φ between each predetermined pair of detection signals among the first to fourth detection signals falls within a range 0°<φ<180° or a range 180°<φ<360°.2. The rotation angle sensor according to claim 1 , wherein the phase difference between the first detection signal and the second detection signal and the phase difference between the third detection signal and the fourth detection signal are each set to 90°.3. The rotation angle sensor according to claim 2 , wherein:the phase difference between the first detection signal and the third detection signal and the phase difference between the second detection signal and the fourth detection signal are set to the same predetermined value; andthe predetermined value is set to any one of 45°, 135°, 225° and 315°.4. The rotation angle sensor according to claim 3 , comprising:a magnetic sensor; anda bias magnet that applies a bias magnetic field to the magnetic sensor and ...

Through Shaft Rotary Position Sensor

A rotary shaft sensor assembly includes 2 arc section magnets extending around the outer surface of a rotatable through shaft, arranged some distance from the shaft to produce a field, constant in strength and direction over a sufficiently large area. A sensor which measures changes in the direction of the magnetic flux generated by the magnets in response to rotation of the shaft is located anywhere in the field of constant strength and direction, specifically not needing to be located at the axis of rotation of the shaft. Optionally another such sensor can be mounted anywhere in the field at right angles to the first to allow for sensing over the full range of rotation of the shaft. 1. A rotary position sensor assembly comprisinga shafta magnet assembly fixed to the shaft designed to generate a magnetic field of constant strength and direction over a sufficiently large area,a sensor located anywhere in the abovementioned field, and adapted to measure a change in direction of the magnetic field generated by the magnet assembly in response to a change in the rotary position of the shaft2. The rotary position sensor assembly of where a second sensor is placed in the in the abovementioned field and adapted to measure a change in direction of the magnetic field generated by the magnet assembly in response to a change in the rotary position of the shaft3. The rotary position sensor assembly of where the second sensor is arranged so that its detection plane is perpendicular to the detection plane of the first sensor and perpendicular to the plane of the cross section of the magnet assembly and parallel to the axis of the shaft This application claims the benefit of the filing date and disclosure of U.S. Provisional Application Ser. No. 61/524,392 filed 17 Aug. 2011 which is explicitly incorporated herein by reference as are all references cited herein.This invention relates to a rotary position sensor assembly and more specifically to a non-contacting rotary position ...

ANGLE SENSOR

An angle sensor includes a sensor rotor formed with a planar coil and a sensor stator placed to face the sensor rotor with a gap therefrom and formed with a planar coil. The planar coil of the sensor stator includes an SIN phase coil and a COS phase coil each having an annular ring shape, and a rotary transformer coil placed radially inside of a region where both the coils are provided. The rotary transformer coil includes two connecting wires to connect to an external circuit, the two connecting wires being arranged to extend across the coils. The two connecting wires are arranged one above the other in their portions that extend across the coils while an insulating film is interposed between the connecting wires. 1. An angle sensor including:a sensor rotor having a main surface formed with a planar coil, the sensor rotor being attached to a rotary shaft and; anda sensor stator having a main surface formed with a planar coil, the sensor stator being placed so that its main surface faces the main surface of the sensor rotor with a gap therefrom,the planar coil of the sensor stator including an SIN phase coil and a COS phase coil each having an annular ring shape, and a rotary transformer coil placed radially inside of a region where the SIN phase coil and the COS phase coil are provided,the rotary transformer coil including two connecting wires to be connected to an external circuit, the two connecting wires being placed to extend across the SIN phase coil and the COS phase coil,wherein the two connecting wires of the rotary transformer coil are placed so that at least portions extending across the SIN phase coil and the COS phase coil overlap one above the other.2. The angle sensor according to claim 1 , wherein the two connecting wires are placed one above the other while an insulating film is interposed therebetween.3. The angle sensor according to claim 2 , whereinthe SIN phase coil includes a connecting wire placed on an outer circumference and a pair of ...

SHIFT RAIL TRANSMISSION POSITION SENSING

Receiving sensor data related to position of a gear in a transmission, the sensor data including data from a first sensor and data from a second sensor; determining a first indicated position of the gear from the data from the first sensor; determining a second indicated position of the gear from the data from the second sensor; comparing the first indicated position to the second indicated position; and determining based on the comparison a gear engagement status of the gear. 1. A method , comprising:receiving sensor data related to position of a gear in a transmission, the sensor data including data from a first sensor and data from a second sensor;determining a first indicated position of the gear from the data from the first sensor;determining a second indicated position of the gear from the data from the second sensor;comparing, in a computing device, the first indicated position to the second indicated position;determining based on the comparison a gear engagement status of the gear.2. The method of claim 1 , wherein the first sensor and the second sensor are attached to a shift rail in a shift rail transmission.3. The method of claim 2 , wherein the first sensor and the second sensor are Hall Effect sensors that generate an output when passing through a magnetic field and wherein the output is indicative of field strength and varies according to proximity of the sensors to magnets attached to the transmission.4. The method of claim 3 , wherein each magnet is attached to a steel plate.5. The method of claim 3 , wherein there are two magnets of opposite polarity.6. The method of claim 2 , wherein the gear is a first gear of a plurality of gears claim 2 , and wherein the shift rail moves a gear engagement element to selectively engage the first gear at a first end of the shift rail travel path or to engage a second gear of the plurality of gears at a second end of the shift rail travel path.7. The method of claim 6 , wherein the first sensor is situated to ...

RESOLVER AND MULTIPLE-ROTATION DETECTOR

A stator includes: a core formed by laminating magnetic steel sheets; and an excitation coil and a detection coil which are wound around teeth provided at the core. The core includes a peripheral section which is disposed to surround the rotor and a detection section which is disposed at the interior of the peripheral section and has the teeth. When the magnetic steel sheets are laminated, each of the magnetic steel sheets forming the core includes a portion which constitutes the peripheral section and a portion which constitutes the detection section. The detection section is substantially U-shaped, and both sides of the U-shape become a pair of teeth which form one phase. A base portion of the substantially U-shape of the detection section connects. with the peripheral section, and gaps are provided between the peripheral section and a part of the base portion which is the root of the teeth. 1. A resolver comprising:a rotor which rotates; anda stator which is disposed on a periphery of the rotor, the stator including a core which is formed by laminating magnetic steel sheets and an excitation coil and a detection coil which are wound around teeth provided on the core,wherein the core has a peripheral section which is disposed so as to surround the rotor and a detection section which is disposed at the interior of the peripheral section and has the teeth,when the magnetic steel sheets are laminated, each of the laminated magnetic steel sheets includes a portion which constitutes the peripheral section and a portion which constitutes the detection section, andthe detection section is substantially U-shaped, and both sides of the U-shape constitute a pair of teeth which form one phase, a base portion of the substantially U-shape of the detection section connects with the peripheral section, and gaps are provided between the peripheral section and a part of the base portion which is the root of the teeth.2. A multiple-rotation detector having the plurality of ...

ENCODER AND MOTOR DEVICE

An encoder includes a rotary disc, a magnetic detection mechanism, an optical detection mechanism, a first detection signal generator, a second detection signal generator, and a multiple turn detector. The magnetic detection mechanism is to magnetically detect rotation of the rotary disc. The optical detection mechanism is to optically detect the rotation of the rotary disc. The first detection signal generator is configured to generate a first detection signal based on an output from the magnetic detection mechanism. The second detection signal generator is configured to generate a second detection signal having a predetermined phase difference from the first detection signal based on an output from the optical detection mechanism. The multiple turn detector is configured to detect a multiple turning amount of the rotary disc based on the first and second detection signals. 1. An encoder comprising:a rotary disc;a magnetic detection mechanism to magnetically detect rotation of the rotary disc;an optical detection mechanism to optically detect the rotation of the rotary disc;a first detection signal generator configured to generate a first detection signal based on an output from the magnetic detection mechanism;a second detection signal generator configured to generate a second detection signal having a predetermined phase difference from the first detection signal based on an output from the optical detection mechanism; anda multiple turn detector configured to detect a multiple turning amount of the rotary disc based on the first and second detection signals.2. The encoder of claim 1 , further comprising:an illumination controller to control a light emitting element of the optical detection mechanism,wherein the illumination controller controls the light emitting element to emit light for a predetermined period of time from a timing at which a level of the first detection signal changes, if a power source for the encoder is switched to a backup power source, ...

Absolute encoder device and motor

The present invention provides an absolute encoder device, including: a permanent magnet including a first magnetic pattern (bipolar) and a second magnetic pattern (multipolar); a first magnetic sensor for detecting a magnetic field of the first magnetic pattern; a second magnetic sensor for detecting a magnetic field of the second magnetic pattern; and a signal processing circuit for calculating an absolute rotation angle of a rotation shaft based on output signals of the first and second magnetic sensors. The first and second magnetic sensors and the signal processing circuit are fixed to a single substrate. The first magnetic pattern is formed on a plane extending in a direction crossing an axial direction inside the permanent magnet, and the second magnetic pattern is formed on an outer peripheral surface of the permanent magnet.

Magnetic sensor system

A magnetic sensor system includes a magnetic field generation unit for generating a target magnetic field and a magnetic sensor for detecting the target magnetic field, and is selectable between an operating state and a non-operating state. The magnetic sensor has a magnetic detection element including a magnetic layer whose magnetization direction varies according to the direction of the target magnetic field in a reference position. When in the operating state, the direction of the target magnetic field in the reference position varies when viewed from the magnetic sensor. When in the non-operating state, the direction of the target magnetic field in the reference position does not vary when viewed from the magnetic sensor and the magnetization direction of the magnetic layer is pinned in a first direction. The magnetic layer has an induced magnetic anisotropy that is imparted in advance to the magnetic layer.

METHOD FOR PRODUCING A SENSOR UNIT, SENSOR UNIT AND INSTRUMENTED BEARING COMPRISING SUCH A SENSOR UNIT

A method of producing a sensor unit for sensing the angular position of a rotatable element with respect to a fixed element, providing an encoder element fastened to the rotatable element, adapted to generate magnetic field variations as a function of its angular position, and a sensing element fastened to the fixed element, adapted to sense the magnetic field variations. The sensing element is mounted on and connected to a printed circuit board mounted in a shielding casing fastened with the fixed element. The method further comprises a step consisting in earthing the shielding casing by electrically connecting it to a load discharging device of the printed circuit board. 1. A method for producing a sensor unit for sensing the angular position of a rotatable element with respect to a fixed element , having an encoder element rotatably fastened to element , adapted to generate magnetic field variations as a function of its angular position , and a sensing element fastened to the fixed element , adapted to sense the magnetic field variations , the sensing element being mounted on and connected to a printed circuit board mounted in a shielding casing fastened to the fixed element , the method comprising the step of earthing the shielding casing by electrically connecting it to a load discharging device of the printed circuit board.2. The method according to claim 1 , wherein the shielding casing is connected to the load discharging device of the printed circuit board by creating at least one protruding element on the shielding casing on at least one point aligned with at least one contact pad of the load discharging device.3. The method according to claim 2 , wherein each protruding element is created by stamping a bottom wall of the shielding casing.4. The method according to claim 3 , wherein the shielding casing is connected to the load discharging device of the printed circuit board by providing the load discharging device with at least one protruding contact pad ...

SENSOR FOR MEASURING TILT ANGLE BASED ON ELECTRONIC TEXTILE AND METHOD THEREOF

Disclosed are a sensor for measuring a tilt angle based on electronic textile according to the present invention and a method thereof. A sensor for measuring a tilt angle based on electronic textile according to the present invention includes a plurality of textile electrodes disposed at predetermined uniform intervals on a textile surface; a textile conductive wire of which one end is connected to a center between the plurality of textile electrodes; and a metal bead connected to another end of the textile conductive wire to thereby be connected to the textile surface. 1. A sensor for measuring a tilt angle based on electronic textile , comprising:a plurality of textile electrodes disposed at predetermined uniform intervals on a textile surface;a textile conductive wire of which one end is connected to a center between the plurality of textile electrodes; anda metal bead connected to another end of the textile conductive wire to thereby be connected to the textile surface.2. The sensor of claim 1 , wherein the plurality of textile electrodes is disposed to be mutually point symmetric based on a point on the textile surface at which the metal bead is connected.3. The sensor of claim 1 , wherein the plurality of textile electrodes is disposed to be at least four so that the number of the plurality of textile electrodes is a multiple of “two”.4. The sensor of claim 1 , wherein the textile conductive wire is formed as a twisted pair cable claim 1 , one conductive wire constituting the twisted pair cable is connected to the metal bead claim 1 , and the other conductive wire is connected to a point on the textile surface at which the metal bead is connected.5. The sensor of claim 4 , wherein the twisted pair cable is wound so that the other conductive wire is not overlapped with the one conductive wire based on the one conductive wire.6. The sensor of claim 1 , further comprising:a measurement means to calculate a tilt angle of the metal bead using capacitance between ...

Encoder element and method for production thereof

A method for producing an encoder element having a base body and a magnetic plastics element includes providing the base body and mixing a plastics base material with a magnetic or magnetizable filler to form an injection-molding material. The method also includes spraying the injection-molding material onto the base body so that a material-bonding, direct connection is produced between the base body and the sprayed-on plastics element. The method also includes magnetizing the sprayed-on plastics element.

MAGNETIC FIELD ANGULAR SENSOR AND SENSING METHOD

A magnetoresistive angular sensing method is disclosed. In a first mode, a first dc external magnetic field in a predetermined direction is applied to an angular sensor arrangement in which the external magnetic field dominates over a magnetic field generated by an input device an angular position of which is to be sensed. In a second mode, a second external magnetic field is applied to the angular sensor. Outputs of the angular sensor arrangement in the two modes are processed to determine an angular orientation of the input device with offset voltage compensation. 18-. (canceled)9. A magnetoresistive angular sensing method , comprising:in a first mode, applying a first dc external magnetic field in a predetermined direction to an angular sensor arrangement, in which the external magnetic field dominates over a magnetic field generated by an input device an angular position of which is to be sensed;in a second mode, applying a second, external magnetic field to the angular sensor; andprocessing outputs of the angular sensor arrangement in the two modes to determine an angular orientation of the input device with offset voltage compensation.10. A method as claimed in claim 9 , wherein the angular sensor arrangement comprises first and second angular sensor circuits.11. A method as claimed in claim 10 , wherein the angular sensor arrangement comprises first and second bridge circuits oriented at 45 degrees with respect to each other.12. A method as claimed in claim 9 , wherein the external magnetic field applied in the second mode is at least 10 times smaller than in the first mode.13. A method as claimed in claim 12 , wherein the external magnetic field applied in the second mode is zero.14. A method as claimed in claim 9 , wherein the external field applied in the first mode is at least 10 times larger than the magnetic field generated by the input device. The invention relates to magnetic field sensors and sensing methods. In particular, the invention relates to ...

POSITION SENSOR, IN PARTICULAR FOR DETERMINING THE POSITION OF A ROTOR OF A PLANAR DIRECT DRIVE

A position sensor in particular for determining the position of a rotor of a planar direct drive, including a pan- or box-shaped, softmagnetic base body (), at least one permanent magnet () arranged within the base body (), wherein the north pole-south pole axis of the permanent magnet () extends perpendicularly to an open base surface of the base body (), poles () having a tooth structure () and being arranged on the permanent magnet () in two rows parallel to the measurement direction, wherein the tooth flanks of the tooth structure () run parallel to a plane extending through the north pole-south pole axis of the permanent magnet (), and further comprising sensors () arranged between the poles () for determining the field strength and/or the magnetic flux. 17-. (canceled)8. A position sensor comprising:a pan-shaped or box-shaped soft magnetic base body having an open base surface;at least one permanent magnet situated within the base body, a north pole-south pole axis of the permanent magnet running perpendicularly to the open base surface;poles having a tooth structure situated on the permanent magnet in two rows parallel to a measuring direction, tooth flanks of the tooth structure running parallel to a plane encompassing the north pole-south pole axis of the permanent magnet; andsensors for ascertaining at least one of a field strength and a magnetic flux situated between the poles.9. The position sensor as recited in wherein the poles include six poles claim 8 , the tooth structure of the poles located in a first row being offset by a quarter period claim 8 , and the tooth structure of the poles situated in a second row being offset by a half period in relation to the first row.10. The position sensor as recited in wherein the permanent magnet is divided into multiple permanent magnet sections distributed at regular intervals on the base body claim 9 , each permanent magnet section aligned with one of the poles in the axial direction.11. The position sensor ...

ANGLE SENSOR, GEAR WHEEL FOR AN ANGLE SENSOR AND METHOD FOR PRODUCING SUCH A GEAR WHEEL

An angle sensor for determining a rotation angle of a rotatable body, such as a steering column in a motor vehicle, includes a gear wheel. The orientation of a magnetic field generated by the gearwheel is configured to be detected by a magnetic field sensor. The gear wheel is comprised of a magnetisable material, such as hard ferrite, into which a magnetisation is introduced. The gear wheel is stronger in a central region than in an edge region in which the teeth are arranged. In order to weakly magnetise the edge region, which minimizes a negative influence of the teeth on the homogeneity of the generated magnetic field, the front face of the gear wheel is configured to be magnetized. The magnetisation process advantageously takes place at the same time as an injection moulding process to form the gearwheel. A method is implemented to produce the gear wheel. 1. A toothed wheel for an angle sensor , comprising:a toothed wheel body; anda plurality of teeth arranged along the periphery of the toothed wheel body,wherein the toothed wheel is embodied completely from a magnetizable material, andwherein a level of magnetization is introduced into the toothed wheel, the level of magnetization being greater in a central region of the toothed wheel than in an edge region in which the teeth are arranged.2. The toothed wheel as claimed in claim 1 , wherein an end face of the toothed wheel is magnetized.3. The toothed wheel as claimed in claim 1 , wherein a magnetization that is essentially homogeneous in the central region of the toothed wheel in a plane that is orthogonal with respect to an axis of rotation of the toothed wheel is introduced into the toothed wheel.4. The toothed wheel as claimed in claim 1 , wherein the magnetizable material comprises magnetizable particles that are embedded in a moldable matrix material.5. The toothed wheel as claimed in claim 1 , wherein the magnetizable material comprises hard ferrite.6. An angle sensor for ascertaining an angle of ...

ROTATOR FOR AN ANGLE SENSOR

A rotator for an angle sensor, includes a rotator body made from a resin material and having a boss portion that is formed in a hollow cylinder shape, a yoke formed in a ring shape and concentrically positioned in the boss portion, and a pair of magnets formed in an arc shape and located to face an inward facing surface of the yoke, wherein the magnets and the yoke are entirely located within the boss portion. 1. A rotator for an angle sensor , comprising a yoke formed in a ring shape and concentrically positioned in the boss portion; and', 'a pair of magnets formed in an arc shape and located to face an inward facing surface of the yoke;, 'a rotator body made from a resin material and having a boss portion that is formed in a hollow cylinder shape;'}2. The rotator according to claim 1 , wherein circumferential ends of the magnets each has a thin wall claim 1 , and the boss portion defines a space close to the circumferential ends of the magnets via the thin walls.3. The rotator according to claim 2 , wherein each of the thin walls has a concave portion tapered toward the corresponding circumferential end of the magnet.4. The rotator according to claim 1 , wherein the boss portion has a vertical hole at one end surface such that the vertical hole extends in an axial direction and reaches to the end of the yoke and the ends of the magnets. The present application claims priority to Japanese patent application serial number 2012-176058, the contents of which are incorporated herein by reference.This disclosure relates to a rotator of an angle sensor for detecting the rotational angle of a rotor.One example of an angle sensor is a throttle sensor (rotational angle detector) for detecting a rotational angle, i.e., opening ratio of a throttle valve in a throttle control device for an internal combustion engine. A throttle sensor typically has a magnetic property detection element installed on a throttle body, a throttle gear serving as a rotator and having a pair of ...

METHOD FOR DETERMINING AN ANGLE OF ROTATION

A method for determining an angle of rotation between a sensor array and a magnetic field of a magnet, whereby the magnetic field is formed substantially parallel and perpendicular to the rotation axis, and the magnet is arranged rotationally symmetric relative to the rotation axis. A first measurement signal and a second measurement signal are generated by the two subsensors of the first magnetic field sensor unit, and the first measurement signal is assigned a first relation and the second measurement signal is assigned a second relation. A third measurement signal and a fourth measurement signal are generated by the two subsensors of the second magnetic field sensor unit, whereby the third measurement signal is assigned a third relation and the fourth measurement signal is assigned a fourth relation. The angle of rotation is then determined. 1. A method for determining an angle of rotation between a sensor array and a magnetic field of a magnet , the magnetic field being rotatable around a rotation axis relative to the sensor array , the magnetic field being substantially parallel and perpendicular to a rotation axis , and the magnet being arranged rotationally symmetric relative to the rotation axis , the method comprising:providing the sensor array with a first magnetic field sensor unit arranged on a first semiconductor body, the first magnetic field sensor unit having two subsensors arranged at an angle to one another, the sensor array having a second magnetic field sensor unit formed on a second semiconductor body, and the second magnetic field sensor unit having two subsensors arranged at an angle to one another;arranging the first semiconductor body and the second semiconductor body adjacent to one another on a same carrier in a same plane or in two planes substantially parallel to one another, such that the first magnetic field sensor unit and the second magnetic field sensor unit have a same orientation relative to the rotation axis, the first magnetic ...

Systems and methods for rotor angle measurement in an electrical generator

Disclosed herein are systems and methods for rotor angle measurement in an electrical generator. According to one embodiment, an intelligent electronic device may comprise control logic configured to generate a reference signal and to generate a rotational position signal based upon an indicator of a rotational position of a rotor in an electrical generator. The control logic may further be configured to detect a relative shift between the reference signal and the rotational position signal and to determine the rotational position of the rotor based upon the relative shift. A power angle of the electrical generator may be calculated based upon the rotational position of the rotor. According to certain embodiments, the control logic may further be configured to generate a control instruction to reduce the power angle in response to determining that the power angle exceeds a threshold.

ROTATION DETECTING DEVICE

A rotation detecting device includes rotation detecting device includes a first supporting member and a second supporting member disposed around an axial line. The rotation detecting device further includes a pair of magnetic field generating portions for generating a magnetic field in a region between the first supporting member and the second supporting member. The rotation detecting device further includes at least one magnetic field detecting portion attached to the second supporting member for detecting the magnetic field. The rotation detecting device further includes a first magnetic member for covering one end portion of the magnetic field detecting portion and a second magnetic member for covering the other end portion of the magnetic field detecting portion. 1. A rotation detecting device , comprising:a first supporting member disposed around an axial line;a second supporting member situated away from the first supporting member along the axial line, at least one of said first supporting member and said second supporting member being arranged to be rotatable around the axial line;a pair of magnetic field generating portions attached to the first supporting member to face the second supporting member for generating a magnetic field between the first supporting member and the second supporting member, said magnetic field generating portions being arranged around the axial line and away from each other along a circumferential direction around the axial line, one of said magnetic field generating portions having a polarity opposite to that of the other of the magnetic field generating portions;a magnetic field detecting portion attached to the second supporting member to face the first supporting member for detecting the magnetic field generated with the magnetic field generating portions, said magnetic field detecting portion including a magnetic element with a coil wound thereon arranged so that a longitudinal direction of the magnetic element is in parallel ...

WATERPROOF CODING DEVICE WITH BUILT-IN MAGNETIC DISC

A waterproof coding device with a built-in magnetic disc, comprising: a magnetic disc; a knob with a shaft, elastic positioning pieces and a magnet conducting ring; a positioning shaft, the magnetic disc and an inductive circuit board being mounted on the positioning shaft; and, a circular support base being located above a panel, the wall of the base is provided with positioning grooves; the head part of the positioning shaft is penetrated through the panel to be screwed; the knob is mounted on the base, the shaft is movably fitted with a sleeve inside the base, the magnet conducting ring is gripped by magnets on the magnetic disc so that the magnetic disc can rotate synchronously with the knob. The coding device has the advantages of compact structure, water tightness and shock resistance, and is specifically suitable for applications in high-humidity environments and occasions with high shock possibility. 1. A waterproof coding device with a built-in magnetic disc , comprising:a magnetic disc, a approximate periphery part of which is distributed with a plurality of magnets at intervals;a knob that is provided therein with a shaft or shaft sleeve, 2 to 4 elastic positioning pieces being provided around the shaft or shaft sleeve, an outer wall of the knob being provided thereon with an annular cavity, a magnetic conducting ring being provided at an opening of the annular cavity;an inductive circuit board, provided with a magnetically sensitive element for detecting angular displacement signals of both the knob and the magnetic disc;a positioning shaft comprising a head part, a middle part and a tail part, the magnetic disc being mounted in the middle part of the positioning shaft by a bearing or shaft collar, and the inductive circuit board being fixed at the tail part of the positioning shaft close to the magnetic disc; and,a circular support base, the center of which being provided with a sleeve while the peripheral wall of which is provided with positioning ...

Hall Sensor Mounting in an Implantable Blood Pump

A molded interconnect device can carry a Hall sensor for transducing a position of a rotor of the implantable blood pump. The molded interconnect device includes one or more integrated electronic circuit traces configured to electrically connect the hall sensor with a printed circuit board of the implantable blood pump, and the molded interconnect device is configured to be mounted to the printed circuit board. 1. A molded interconnect device carrying a Hall sensor for transducing a position of a rotor of an implantable blood pump , the molded interconnect device comprising:one or more integrated electronic circuit traces configured to electrically connect the hall sensor with a printed circuit board of the implantable blood pump, wherein the molded interconnect device is configured to be mounted to the printed circuit board.2. The molded interconnect device of claim 1 , further comprising:at least one recess on a surface of the device, the surface being oriented towards the printed circuit board or facing the printed circuit board.3. The molded interconnect device of claim 2 , wherein the recess is configured to be at least partially filled with an adhesive.4. The molded interconnect device of claim 3 , wherein the adhesive is configured to secure the molded interconnect device to the printed circuit board during the operation of the pump.5. The molded interconnect device of claim 2 , wherein the recess is adapted to be form-fit with a soldered joint that electrically connects the printed circuit board with the one or more integrated electronic circuit traces of the molded interconnect device.6. The molded interconnect device of claim 4 , wherein the adhesive is applied between the hall sensor and the printed circuit board and/or between a surface of the device and the printed circuit board.7. The molded interconnect device of claim 1 , wherein the molded interconnect device is configured to be attached on the printed circuit board between pole pieces of a stator ...

VARIABLE RELUCTANCE RESOLVER HAVING INTEGRAL ELECTROMAGNETIC INTERFERENCE SHIELD AND ROTARY ELECTRIC MACHINE HAVING SAME

A variable reluctance resolver including a resolver stator having an annular resolver stator core surrounding an axis, a resolver rotor rotatable about the axis relative to the resolver stator and surrounded by the resolver stator core, and resolver EMI shielding. The resolver EMI shielding includes first and second resolver shields disposed on opposite axial sides of the resolver stator core. The resolver shielding has a relative permeability of at least about 50. Also, an electric machine having such a variable reluctance resolver. 1. An electric machine comprising:a machine stator;a machine rotor supported for relative rotation relative to the machine stator about an axis;a variable reluctance resolver comprising a resolver stator having an annular resolver stator core rotatably fixed relative to the machine stator and surrounding the axis, and a resolver rotor rotatable in unison with the machine rotor and surrounded by the resolver stator core; andresolver EMI shielding comprising first and second resolver shields disposed on opposite axial sides of the resolver stator core, the resolver shielding having a relative permeability of at least about 50.2. The electric machine of claim 1 , wherein the first and second resolver shields are separably assembled components of the electric machine.3. The electric machine of claim 1 , wherein the first and second resolver shields are components of the variable reluctance resolver.4. The electric machine of claim 3 , wherein the first and second resolver shields are separable components of the resolver stator.5. The electric machine of claim 3 , wherein the first and second resolver shields are integrally formed together and joined through the resolver stator core claim 3 , whereby the first and second resolver shields are nonseparably integrated components of the resolver stator.6. The electric machine of claim 1 , wherein the resolver EMI shielding is formed of a plastic-type material having a relative permeability of at ...

ROTATIONAL POSITION SENSING APPARATUS

A rotational position sensing apparatus includes a rotational position sensing magnet and a fixing member. The fixing member is made of a non-magnetic material and is fixed to a rotatable shaft of a rotor. The fixing member includes a plurality of projections, which radially inwardly project and are arranged one after another in a circumferential direction at an inner peripheral surface of a first peripheral wall portion within a space, which is defined by the first peripheral wall portion and a bottom wall portion and holds the rotational position sensing magnet. 1. A rotational position sensing apparatus comprising:a rotational position sensing magnet that generates a magnetic flux that is used for sensing a rotational position of a rotatable body; anda fixing member that is made of a non-magnetic material and is fixed to a rotatable shaft of the rotatable body, wherein:the fixing member includes a first peripheral wall portion, which is configured into a tubular form, and a bottom wall portion, which radially inwardly extends from one axial end part of the first peripheral wall portion;the rotational position sensing magnet is held in a space, which is defined by the first peripheral wall portion and the bottom wall portion; andthe fixing member includes a plurality of projections, which radially inwardly project and are arranged one after another in a circumferential direction at an inner peripheral surface of the first peripheral wall portion within the space, which is defined by the first peripheral wall portion and the bottom wall portion and holds the rotational position sensing magnet.2. The rotational position sensing apparatus according to claim 1 , wherein the plurality of projections is formed in the inner peripheral surface of the first peripheral wall portion at an axial location claim 1 , which is axially spaced from the bottom wall portion.3. The rotational position sensing apparatus according to claim 1 , wherein the plurality of projections is ...

RELATIVE ROTATIONAL ANGULAR DISPLACEMENT DETECTION DEVICE, TORQUE DETECTION DEVICE, TORQUE CONTROL DEVICE, AND VEHICLE

A relative rotational angular displacement detection device includes a pair of rotatable members relatively rotatable in a circumferential direction. A permanent magnet is attached to one of the rotatable members and includes magnetic poles magnetized in an axial direction of the axis of rotation and arranged to alternate in polarity in the circumferential direction. A magnetic flux inducing ring includes an annular ring body attached to the other of the rotatable members and is arranged coaxially with the axis of rotation, and a plurality of protrusions having a circumferential width smaller than a circumferential width of a magnetic pole. A magnetic detection portion is configured to detect a magnetic flux of the ring body of the magnetic flux inducing ring. The flux inducing ring is magnetized depending on a relative positions the protrusions and positions of the magnetic poles. 1. A relative rotational angular displacement detection device , comprising:a pair of rotatable members rotatable relative to each other around an axis of rotation in a circumferential direction;a permanent magnet attached to a first of the pair of rotatable members and including magnetic poles magnetized in an axial direction of the axis of rotation, the magnetic poles arranged so as to alternate in polarity in the circumferential direction, the magnetic poles each having a circumferential width; a plurality of protrusions each having a circumferential width, at least one of the circumferential widths of the protrusions is smaller than at least one of the circumferential widths of the magnetic poles, and', 'an annular ring body attached to a second of the pair of rotatable members and arranged coaxially with the axis of rotation, the ring body being magnetized and having a strength of magnetization that changes depending on positions of the protrusions relative to positions of the magnetic poles; and, 'a magnetic flux inducing ring including'}a magnetic detection portion configured to ...

RELATIVE ROTATIONAL ANGULAR DISPLACEMENT DETECTION DEVICE, TORQUE DETECTION DEVICE, TORQUE CONTROL DEVICE, AND VEHICLE

A permanent magnet includes magnetic poles that are arranged so as to alternate in polarity in the circumferential direction of the axis of rotation. The magnet is attached to one of a pair of rotatable members. The rotatable members are relatively rotatable about an axis of rotation. A magnetic flux inducing ring, including an annular ring body and a plurality of protrusions protruding from the ring body, is attached to the other rotatable member. A plurality of magnetic sensors is arranged adjacent to the ring body. A first facing portion and a second facing portion, each for inducing a part of a magnetic flux of the ring body, are provided and do not rotate with the permanent magnet and the magnetic flux inducing ring. 1. A relative rotational angular displacement detection device , comprising:a pair of rotatable members rotatable by 360 degrees around an axis of rotation, the rotatable members being rotatable relative to each other around the axis of rotation in a circumferential direction;a permanent magnet attached to a first of the pair of rotatable members so as to rotate with the first rotatable member, the permanent magnet including magnetic poles arranged so as to alternate in polarity along the circumferential direction; an annular ring body attached to a second of the pair of rotatable members so that the magnetic flux inducing ring rotates with the second rotatable member, the annular ring body arranged coaxially with the axis of rotation, and', 'a plurality of protrusions protruding from the ring body and arranged so as to face the magnetic poles in a magnetization direction of the permanent magnet,', 'the ring body being magnetized and having a strength of magnetization that changes depending on positions of the protrusions relative to positions of the magnetic poles; and, 'a magnetic flux inducing ring including'} a first facing portion arranged to face a first part of the ring body to form a first magnetic flux path with the first part of the ring ...

POSITION-MEASURING DEVICE AND METHOD FOR OPERATING THE SAME

A position-measuring device includes a code carrier having a first graduation track and a second graduation track, the second graduation track being an incremental graduation track. A first detector system is configured to scan the graduation tracks so as to generate first position signals. A second detector system is configured to scan the second graduation track so as to generate second position signals. A first position-processing unit is configured to process the first position signals so as to yield a first absolute position value. A second position-processing unit is configured to process the second position signals so as to yield a second absolute position value. The first position-processing unit is configured to feed an absolute auxiliary position value to the second position-processing unit. The second position-processing unit is initializable with the absolute auxiliary position value. 1. A position-measuring device , comprising:a code carrier having at least a first graduation track and a second graduation track, the second graduation track being an incremental graduation track;a first detector system configured to scan the first graduation track and the second graduation track so as to generate first position signals;a second detector system configured to scan the second graduation track so as to generate second position signals;a first position-processing unit configured to process the first position signals so as to yield a first absolute position value; anda second position-processing unit configured to process the second position signals so as to yield a second absolute position value, the first position-processing unit being configured to feed an absolute auxiliary position value to the second position-processing unit and the second position-processing unit being initializable with the absolute auxiliary position value.2. The position-measuring device as recited in claim 1 , wherein the second position-processing unit includes:a fine position ...