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Небесная энциклопедия

Космические корабли и станции, автоматические КА и методы их проектирования, бортовые комплексы управления, системы и средства жизнеобеспечения, особенности технологии производства ракетно-космических систем

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Мониторинг СМИ

Мониторинг СМИ и социальных сетей. Сканирование интернета, новостных сайтов, специализированных контентных площадок на базе мессенджеров. Гибкие настройки фильтров и первоначальных источников.

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Поддерживает ввод нескольких поисковых фраз (по одной на строку). При поиске обеспечивает поддержку морфологии русского и английского языка
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02-10-2018 дата публикации

Пружинный амортизатор для гашения резонансных колебаний в вибрационных строительных машинах

Номер: RU0000183775U1
Автор: Владимир Викторович Самолутченков, Роман Андреевич Литвин, Сергей Васильевич Репин
Принадлежит: Федеральное государственное бюджетное образовательное учреждение высшего образования "Санкт-Петербургский государственный архитектурно-строительный университет"

Полезная модель может быть использована для гашения резонансных колебаний в вибрационных машинах при пуске и торможении. Технический результат – снижение величины резонансных колебаний вибрационной машины. Поставленная задача решена за счет новой конструкции пружинного амортизатора, содержащего цилиндр, в котором расположены шток с поршнем и пружина, который снабжен двумя подвижными центрирующими втулками, расположенными выше и ниже поршня и выполненными диаметром меньше диаметра цилиндра амортизатора на один миллиметр и с центральным отверстием диаметром больше диаметра штока на один миллиметр, причем высота верхней центрирующей втулки в два раза меньше диаметра нижней центрирующей втулки, с удерживающей втулкой, выполненной с обоих концов с резьбой и с внутренним диаметром меньше диаметра поршня на пять миллиметров, при этом на удерживающую втулку навинчены обе центрирующие втулки и закреплены с помощью шайб, причем пружина установлена в нижней части амортизатора и упирается одним концом в дно цилиндра, а другим в шайбу, на поршне закреплены сверху и снизу по две плоских пружины, нижний торец штока проходит через центральные отверстия центрирующих втулок и удерживающей втулки и выступает за шайбу, расположенную центрирующую втулку. 4 ил. РОССИЙСКАЯ ФЕДЕРАЦИЯ (19) RU (11) (13) 183 775 U1 (51) МПК F16F 15/00 (2006.01) ФЕДЕРАЛЬНАЯ СЛУЖБА ПО ИНТЕЛЛЕКТУАЛЬНОЙ СОБСТВЕННОСТИ (12) ОПИСАНИЕ ПОЛЕЗНОЙ МОДЕЛИ К ПАТЕНТУ (52) СПК F16F 15/00 (2006.01) (21)(22) Заявка: 2018111793, 02.04.2018 (24) Дата начала отсчета срока действия патента: Дата регистрации: 02.10.2018 (45) Опубликовано: 02.10.2018 Бюл. № 28 1 8 3 7 7 5 R U (56) Список документов, цитированных в отчете о поиске: RU 170565 U1, 28.04.2017. RU 2546379 C1, 10.04.2015. RU 2426921 C2, 20.08.2011. CN 204403250 U, 17.06.2015. US 4934491 A1, 19.06.1990. (54) ПРУЖИННЫЙ АМОРТИЗАТОР ДЛЯ ГАШЕНИЯ РЕЗОНАНСНЫХ КОЛЕБАНИЙ В ВИБРАЦИОННЫХ СТРОИТЕЛЬНЫХ МАШИНАХ (57) Реферат: Полезная модель может быть использована высота верхней ...

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Номер записи: 1
23-02-2012 дата публикации

Vibration isolation device, exposure apparatus, and device manufacturing method using same

Номер: US20120045723A1
Автор: Katsumi Asada, Ryo Nawata
Принадлежит: Canon Inc

The vibration isolation device of the present invention includes a first position feedback control system including a reference body system that is fixed to an object to be isolated from vibration and includes a reference body; a first driving unit that drives the object with respect to a base; and a first compensator that calculates a command value to the first driving unit based on position information obtained from the reference body system. Also, the reference body system includes a second position feedback control system including a second driving unit that drives the reference body with respect to the object; a first measuring unit that measures the position of the reference body relative to the object; and a second compensator that calculates a command value to the second driving unit based on position information obtained from the first measuring unit. Here, the second compensator is a PD compensator.

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Номер записи: 2
10-05-2012 дата публикации

Shock absorption platform

Номер: US20120111110A1
Автор: Weiwei KONG, Xiaoliang SUN
Принадлежит: EMPIRE TECHNOLOGY DEVELOPMENT LLC

Technologies are generally described for effectively damping the vibration of a platform. In some examples, a platform system for minimizing shock to an object includes a base, a platform effective to carry the object, a number of actuators coupled between the platform and the base and being configured to adjust an orientation of the platform based on control signals, a number of accelerometers positioned on the base, and a processor coupled to the accelerometers and the actuators. The processor is programmed to collect acceleration data from the accelerometers, determine an acceleration vector of the platform from the acceleration data, compensate for the acceleration vector by determining travels and travel directions for the actuators in an effort to maintain contact between the platform and the object, and generate control signals to actuate the actuators with the travels in the travel directions.

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Номер записи: 3
04-04-2013 дата публикации

VELOCITY-PROPORTIONAL ACTIVE VIBRATION DAMPING

Номер: US20130085617A1
Автор: Ladra Uwe, Schäfers Elmar, Schür Torsten
Принадлежит: SIEMENS AKTIENGESELLSCHAFT

An active vibration damper has a damping device arranged on a vibration-susceptible mechanical structure. A force can be injected directly into the vibration-susceptible mechanical structure with the damping device. A damping force which damps a vibration of the mechanical structure is determined by a control device of the active vibration damper with reference to an absolute movement of the mechanical structure in space. A damping drive of the damping device which is arranged on the mechanical structure is activated by the control device in accordance with the determined damping force such that the determined damping force is injected into the mechanical structure with the damping drive. The control device determines the damping force such that the damping force is proportional at all times to the instantaneous velocity of the mechanical structure. 1. A method for operating an active vibration damper having a damping device arranged on a vibration-susceptible mechanical structure , comprising the steps of:determining with a control device, based on an absolute movement of the mechanical structure in space, a damping force damping a vibration of the mechanical structure, wherein the damping force is proportional at all times to an instantaneous velocity of the mechanical structure,controlling with the control device a damping drive of the damping device, which is arranged on the mechanical structure, commensurate with the determined damping force, anddirectly injecting with the damping drive the determined damping force into the mechanical structure.2. The method of claim 1 , further comprising the step of externally specifying to the control device a proportionality factor between the instantaneous velocity of the mechanical structure and the damping force exerted on the mechanical structure.3. The method of claim 2 , wherein the control device receives the proportionality factor as a parameter when executing a control program.4. The method of claim 1 , wherein the ...

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Номер записи: 4
09-05-2013 дата публикации

Compact Active Vibration Control System for a Flexible Panel

Номер: US20130113338A1
Автор: Daniel F. Perey, Noah H. Schiller, Randolph H. Cabell
Принадлежит: National Aeronautics and Space Administration NASA

A diamond-shaped actuator for a flexible panel has an inter-digitated electrode (IDE) and a piezoelectric wafer portion positioned therebetween. The IDE and/or the wafer portion are diamond-shaped. Point sensors are positioned with respect to the actuator and measure vibration. The actuator generates and transmits a cancelling force to the panel in response to an output signal from a controller, which is calculated using a signal describing the vibration. A method for controlling vibration in a flexible panel includes connecting a diamond-shaped actuator to the flexible panel, and then connecting a point sensor to each actuator. Vibration is measured via the point sensor. The controller calculates a proportional output voltage signal from the measured vibration, and transmits the output signal to the actuator to substantially cancel the vibration in proximity to each actuator.

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Номер записи: 5
18-07-2013 дата публикации

Active bearing

Номер: US20130180350A1
Автор: Roman Kraus, Sven Herold, Timo JUNGBLUT, Tobias Melz
Принадлежит: Fraunhofer Gesellschaft zur Forderung der Angewandten Forschung eV

An active bearing at least for vibration reduction is described, comprising a) an interface ( 7 ) to be fitted to a load ( 8 ); b) at least one support element ( 3 ) in an operative connection with the interface ( 7 ) and a support unit ( 6 ); c) at least one linear actuator ( 5 ) supported indirectly or directly on the support unit ( 6 ); d) a gear unit ( 4 ) for the path transmission of an actuating path change originating from the linear actuator ( 5 ), said gear unit being in an operative connection with the at least one linear reactor ( 5 ); e) at least one decoupling unit ( 1 ), which serves for the decoupling of the static load transfer and for transmitting the dynamic load transfer; wherein the at least one linear actuator ( 5 ), the gear unit ( 4 ) and the at least one decoupling unit ( 1 ) are disposed serially.

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Номер записи: 6
19-09-2013 дата публикации

Vibration suppression apparatus and vibration suppression method

Номер: US20130240705A1
Автор: Tosiya Asano
Принадлежит: Canon Inc

The present invention provides a vibration suppression apparatus which includes a first object elastically supported on a base, a second object elastically supported on the first object, and a driving unit configured to drive the first object, and which suppresses a vibration of the second object, comprising a first generation unit configured to generate a first signal, a second generation unit configured to generate a second signal, and a control unit configured to control the driving unit, wherein the control unit controls the driving unit based on the first signal, and after the deviation between the relative distance between the base and the first object, and the first reference distance falls within an allowable range, the control unit controls the driving unit based on the first signal and the second signal.

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Номер записи: 7
31-10-2013 дата публикации

CONTROL DEVICE AND METHOD FOR OPERATING A MOTOR VEHICLE

Номер: US20130289822A1
Автор: Goeltenboth Juergen, Klaus Michael
Принадлежит: DR. ING. H.C.F. PORSCHE AKTIENGESELLSCHAFT

A control device of a motor vehicle, which control device receives, from at least one body-side sensor, a vibration actual value of at least one corresponding body-side reference point and receives, from at least one chassis-side sensor, a vibration actual value of at least one corresponding chassis-side reference point, the control device making a decision on the reference point or points for which actuating signals for the actuators of the active assembly bearings are generated, and on which vibration desired value is used, in such a manner that the respective vibration actual value follows the respective vibration desired value. 1. A control device of a motor vehicle , the control device being configured to:receive actual values of controlled variables from sensors, including, from at least one body-side sensor, a vibration actual value of at least one corresponding body-side reference point and, from at least one chassis-side sensor, a vibration actual value of at least one corresponding chassis-side reference point;generate actuating signals for actuators of active assembly bearings on the basis of a control deviation between the actual values and corresponding desired values in such a manner that the actual values follow the desired values; andmake a decision on each reference point for which actuating signals for the actuators of the active assembly bearings are generated, and on which vibration desired value is used, in such a manner that the respective vibration actual value follows the respective vibration desired value.2. The control device as recited in claim 1 , wherein the control device is configured to receive at least one of a vibration actual value of a vehicle seat from a body-side seat sensor claim 1 , a vibration actual value of a base plate from a body-side base plate sensor claim 1 , or a vibration actual value of a dome point from a body-side dome point sensor.3. The control device as recited in claim 1 , wherein the control device is ...

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Номер записи: 8
28-11-2013 дата публикации

Roof Object Support System

Номер: US20130312364A1
Автор: Krovats Neil
Принадлежит:

A support block for supporting objects on a roof is a moulded elastomeric block with a substantially hollow core. The support block can be used as is or in a system whereby a galvanized steel channel is secured to the top wall of the block accommodating the mating of a variety of clamps. In some embodiments, the block is elongate and generally flat and supports a roof mounted object thereon when two or more blocks are supported parallel and spaced apart from one another with the object spanning between the blocks. 1. A method of forming a support block , the method comprising:providing a flat bottom arranged to be supported on the roof;providing a pair of opposing end walls oriented transversely to the flat bottom of the support block;providing a top wall which is elongate in a longitudinal direction extending between the opposing end walls and which is arranged to support the roof object thereon;providing a pair of sloped side walls extending in the longitudinal direction of the top wall between the opposing end walls and extending downwardly and outwardly in a lateral direction from the top wall towards the flat bottom of the support block such that the flat bottom is wider in the lateral direction than the top wall;forming the flat bottom, the pair of opposing end walls, the top wall, and the pair of sloped side walls of resilient material; andproviding at least one hollow cavity in the resilient material which is only open to the flat bottom such that the side walls and end walls are without openings and such that the support block is arranged to be positioned between a roof object and a roof and the resilient material forming the support block is arranged to dampen vibration between the roof object and the roof.2. The method according to including forming the flat bottom claim 1 , the pair of opposing end walls claim 1 , the top wall claim 1 , and the pair of sloped side walls into a single piece of self-damping elastomeric material.3. The method according to ...

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Номер записи: 9
26-12-2013 дата публикации

Shock absorber and method for operating a shock absorber in particular for a bicycle

Номер: US20130341138A1
Автор: Gernot Elsensohn, Juergen Poesel, Martin Walthert, Stefan Battlogg
Принадлежит: DT Swiss Inc

Shock absorber and method for operating a shock absorber for a bicycle wherein a relative motion of a first and a second component interconnected via a damper device is dampened. The damper device comprises a controllable damping valve having at least one field generating device with which a field-sensitive medium can be influenced for influencing a damping force of the damper device by applying a field intensity of the field generating device. A parameter for the current speeds of the first and second components relative to one another is obtained in real time. For damping, a current field intensity to be set is derived in real time by means of the parameter from a characteristic damper curve and by means of the field generating device the field intensity to be currently set is generated in real time for setting in real time a damping force which results from the predetermined characteristic damper curve at the parameter obtained.

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Номер записи: 10
09-01-2014 дата публикации

Vibration damping device

Номер: US20140008162A1
Автор: Adnan Akay, Antonio Carcaterra
Принадлежит: Universita degli Studi di Roma La Sapienza

The damping device comprises a cluster of resonators with a predetermined frequency distribution, that, when attached to a main or ‘master’ structure, is capable of absorbing irreversibly its vibrational or/and acoustic energy produced by a vibrating body. the density of natural frequencies of the plurality of resonators is comprised within a curve that lies below the envelope curve determined by the formula, e( )=1/−1.

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Номер записи: 11
30-01-2014 дата публикации

DEVICE FOR MECHANICAL VIBRATION DECOUPLING

Номер: US20140027601A1
Автор: Bartel Torsten, Melz Tobias
Принадлежит:

A device is disclosed for mechanical vibration decoupling having two bearing ends to which bodies for reciprocally decoupling vibrations are joined which are interconnected by couplings having a variably adjustable stiffness. The couplings comprise at least three spring beam elements each having a spring beam surface from which a normal vector extends and which are each dimensionally stable in a longitudinal direction and are elastical orthogonal to the spring beam surface. The at least three spring beam elements are disposed spatially relative to each other so that normal vectors thereof are each orientated at an angle α relative to each other with α=90°±30°. 112-. (canceled)13. A device for mechanical vibration decoupling including two bearing ends on bodies for decoupling vibrations are applied and which are interconnected with a variably adjustable stiffness , comprising:at least three spring beam elements each having a spring beam surface with a normal vector and which are each dimensionally stable a longitudinal direction and each are elastic orthogonal to the normal vector in a direction, and whereinthe least three spring beam elements are disposed spatially with respect to each other so that the normal vectors form an angle α such that α=90°±30;the spring beam elements each have two mutually opposite spring beam ends each secured by a clamp;a first and a second clamp are each connected to a different bearing end;clamps other than the first and second clamps securely connect two spring beam elements to each other; andthe other clamps are only carried by the spring beam elements and are mounted to oscillate freely.14. A device in accordance with claim 13 , wherein:a device for influencing elasticity or stiffness is disposed along at least one spring beam in a direction orthogonal to the spring beam surface.15. A device in accordance with claim 13 , comprising:the device for influencing elasticity orthogonal to the spring beam surface comprises a transducer ...

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Номер записи: 12
30-01-2014 дата публикации

VEHICLE VIBRATION REDUCTION SYSTEM

Номер: US20140032044A1
Автор: Murakami Kazutomo, Watai Hirokazu
Принадлежит: BRIDGESTONE CORPORATION

A rotational signal of a generation source of a control object is detected and, when a rotational speed (frequency) varies, convergence values of filter coefficients of adaptive filters based on a previous control result corresponding to the frequency stored in a control device are retrieved and set to the adaptive filters as initial values. The adaptive filters are updated by using the initial values of filter coefficients and output a control signal y(t) to an ACM (actuator) LMS arithmetic units read a reference signal calculated from the rotational signal and an acceleration signal (error signal) e(t) detected by a sensor and carry out processing for updating the filter coefficients of the adaptive filters The adaptive filters based on updated filter coefficients, output the control signal y(t) to the ACM 1. A vehicle vibration reduction system including: at least one excitation device for generating an excitation force; at least one vibration detection device for detecting vibration at a predetermined position in the vehicle; and a control device that calculates a frequency from a rotational speed signal of a generation source of a control object , generates a reference signal whose frequency is a real number multiple of a frequency of the rotational speed signal , updates an adaptive filter based on a signal obtained from the vibration detection device and the reference signal and , by using the adaptive filter , controls the excitation device to generate the excitation force , such that the vibration generated at the predetermined position in the vehicle is reduced , whereinthe control device, when the rotational speed at the generation source of the control object varies, sets a value of the adaptive filter of a previous control result corresponding to the frequency to the adaptive filter as a initial value and, by using the adaptive filter updated from the initial value, controls the excitation device to generate the excitation force, such that the vibration ...

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Номер записи: 13
05-01-2017 дата публикации

METHOD AND LOADING UNIT FOR DAMPING LOADS WHICH ACT IN THE CASE OF OVERLOAD

Номер: US20170002890A1
Автор: Battlogg Stefan, Mayer Markus
Принадлежит:

An energy absorber is controlled in an overload event to absorb potentially damaging energy. The energy absorber acts between a receiving unit for receiving objects for transporting and a carrier device that connects to a transporter. An absorber force can be influenced by an electrically controlled magnetic field unit. Measurement values of loads acting on the loading unit are captured sequentially and an overload event is determined if a measure derived from the measurement values exceeds a predetermined threshold value. After the onset of an overload event a prognosticated load curve of the loading unit is assessed from a multitude of measurement values captured from the onset of the overload event. A planned power flow curve for the magnetic field unit is determined and the load curve is damped time-dependent so that a planned load curve ensues which remains beneath a predetermined load limit. 119-. (canceled)20. A method of controlling an energy absorber at a loading unit to reduce loads acting on an object transported on the loading unit , the method comprising:providing an energy absorber configured to absorb energy in a single overload event involving energy input that is so great that, absent an energy absorber, damage to an object to be protected while being transported on the loading unit is highly probable, so as to reduce loads on the object resulting from the overload event by way of energy absorption by the energy absorber;disposing the energy absorber to act between a receiving unit for receiving the object to be transported and a carrier device for connection with a transport device; andproviding an electrically controllable magnetic field unit disposed to influence an absorber force of the energy absorber by performing the following steps:capturing measurement values of loads acting on the loading unit sequentially by a sensor device;when a measure derived from the measurement values exceeds a predetermined threshold value, determining that an ...

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Номер записи: 14
11-01-2018 дата публикации

Control System for an Active Powertrain Mount

Номер: US20180009307A1
Автор: Barta David John, Pyle Steven, Zimmerman Michael Gerard
Принадлежит:

A control system for an active powertrain mount includes a control signal which is based on the input velocity of the chassis at the active powertrain mount. The control signal may be proportional to the input velocity or to the mount velocity, which is the difference between the input velocity of the chassis at the active powertrain mount and the output velocity of the powertrain component at the active powertrain mount. The input velocity of the chassis at the active powertrain mount may be determined by a controller based on the CG heave and the roll and pitch velocities of the chassis. The output velocity of the powertrain component at the active powertrain mount is determined by the controller by integrating an acceleration signal from a component accelerometer disposed on the powertrain component proximate to the active powertrain mount. Corresponding methods for controlling an active powertrain mount are also provided. 1. A control system for an active powertrain mount for a vehicle , comprising:an active powertrain mount disposed between a powertrain component and a chassis of the vehicle for adjustably damping vibrations in an active direction therebetween; anda controller generating a control signal to adjust the damping characteristics of the active powertrain mount based on an output velocity of the powertrain component at said active powertrain mount.2. The control system for an active powertrain mount for a vehicle as set forth in wherein said control signal is proportional to said output velocity.3. The control system for an active powertrain mount for a vehicle as set forth in wherein said output velocity is the velocity of the powertrain component at said active powertrain mount and in said active direction.4. The control system for an active powertrain mount for a vehicle as set forth in wherein said controller transmits said control signal to said active powertrain mount with said active powertrain mount in an active control mode claim 1 , and ...

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Номер записи: 15
28-01-2016 дата публикации

VIBRATION CONTROL DEVICE, LITHOGRAPHY APPARATUS, AND ARTICLE MANUFACTURING METHOD

Номер: US20160026097A1
Автор: TAMURA Wataru
Принадлежит:

A detecting system of a vibration control device provided herein includes a second object, a second spring mechanism that supports the second object, a third object, a third spring mechanism, a first detector that detects displacement of the third object with respect to the second object, a second driving member, and a feedback control member that perform feedback control on the second driving member based on the output of the first detector. A two-degree-of-freedom system, including the second object and the third object, vibrates by a first vibration mode that accompanies a translation motion and a second vibration mode that accompanies atilt motion according to a natural frequency, and a servomotor control frequency of the feedback control member is higher than the natural frequency of the first vibration mode and lower than the natural frequency of the second vibration mode. 1. A vibration control device comprising:a first object;a first spring mechanism for supporting the first object;a detecting system for detecting a position of the first object; anda first driving member for applying force to the first object,wherein the vibration control device is configured to control the first driving member based on the output of the detecting system to control vibration of the first object, a second object;', 'a second spring mechanism that supports the second object;', 'a third object that supports the second spring mechanism;', 'a third spring mechanism that supports the third object;', 'a first detector that detects displacement of the third object with respect to the second object;', 'a second driving member that applies a force to the third object; and', 'a feedback control member that is configured to perform feedback control on the second driving member based on the output of the first detector,, 'wherein the detecting system includeswherein a two-degree-of-freedom system including the second object and the third object vibrates by a first vibration mode that ...

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Номер записи: 16
23-01-2020 дата публикации

Motorcycle Handlebar Featuring Active Vibration Damping

Номер: US20200023921A1
Автор: Gordner Achim
Принадлежит:

A handlebar for a motor vehicle, in particular a motorcycle or a motorcycle-type vehicle, has a vibration damping mechanism designed to dampen a first vibration of the handlebar. The vibration damping mechanism is designed to detect the first vibration and is equipped with at least one actuator which is effectively coupled to the handlebar in a vibration-transmitting manner and which, in response to the detected first vibration, can be actuated to introduce a second vibration into the handlebar. 1. A handlebar for a motor vehicle , comprising:a vibration damping mechanism configured to damp a first oscillation of the handlebar, whereinthe vibration damping mechanism is configured to detect the first oscillation and comprises at least one actuator that is actively coupled to the handlebar so as to transmit oscillations, andthe at least one actuator is actuatable in response to the detected first oscillation to introduce a second oscillation into the handlebar.2. The handlebar according to claim 1 , whereinthe motor vehicle is a motorcycle-type of motor vehicle.3. The handlebar according to claim 1 , whereinthe second oscillation generated by the at least one actuator in the actuated state has a same frequency as the first oscillation as well as a phase shift of essentially φ=180°.4. The handlebar according to claim 3 , whereinthe second oscillation has an essentially equal amplitude to the first oscillation.5. The handlebar according to claim 1 , whereinthe vibration damping mechanism comprises at least one sensor for detecting the first oscillation and generating a signal in response to the first vibration.6. The handlebar according to claim 5 , whereinthe at least one sensor is configured as an accelerometer for detecting a frequency and/or an amplitude of the first oscillation in at least one spatial direction.7. The handlebar according to claim 6 , whereinthe at least one sensor detects a frequency and/or an amplitude of the first oscillation in all three spatial ...

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Номер записи: 17
23-01-2020 дата публикации

Active Vibration Absorption System for Absorbing Vibration of a Vibrating Element, Motor Vehicle Having the Active Vibration Absorption System, and Method for Operating the Active Vibration Absorption System

Номер: US20200027438A1
Автор: BOCK Florian, DREFFKE Gerald, HINRICHSEN Lars
Принадлежит: Audi AG

The disclosure relates to an active vibration absorption system for absorbing the vibrations of a vibrating element. The vibration absorption system comprises a structure-borne sound exciter having a coupling element for coupling to the vibrating element and having an electrical coil for moving the coupling element by means of a coil current. The structure-borne sound exciter is designed to provide a measurement signal correlated with a detected induced voltage. Furthermore, the vibration absorption system comprises a control device, which is designed to identify a target current intensity of the coil current in accordance with the measurement signal and to control an actual current intensity of the coil current to the target current intensity. The target current intensity is designed to adjust the motion of the coupling element in such a way that the vibrations of the element are at least partly absorbed. Moreover, the control device is designed to identify a detection component and a control component from the measurement signal and to identify the target current intensity in accordance with the detection component. 110-. (canceled)11. An active vibration absorption system , comprising:a control device;a vibrating element;an electrical coil; anda first structure-borne sound exciter, 'detect an induced voltage in the electrical coil, and provide a measurement signal correlated with the detected induced voltage,', 'wherein the first structure-borne sound exciter comprises a coupling element for coupling to the vibrating element, and the first structure-borne sound exciter is configured to vibrate when the vibrating element is vibrating,', 'induce an electromagnetic current in the electrical coil by a motion, and', 'move in response to a flow of an electrical current in the electrical coil, and, 'wherein the coupling element is configured to receive the measurement signal,', 'identify a first target strength of the electrical current corresponding to the measurement ...

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Номер записи: 18
04-02-2016 дата публикации

Electric power steering isolator

Номер: US20160033001A1
Автор: Amy K. Luebke, Charles C. Weddle, Michael E. McGuire
Принадлежит: GM GLOBAL TECHNOLOGY OPERATIONS LLC

Electric power steering systems and a method for controlling an electric power steering system are provided. The method, for example, includes, but is not limited to, determining, by a controller, a speed of a vehicle based upon data from a sensor, and adjusting, by the controller, a stiffness of an isolator in an electric power steering system via at least one piezoelectric device embedded in the isolator based upon the determined speed of the vehicle.

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Номер записи: 19
05-02-2015 дата публикации

SYSTEM AND METHOD FOR MANAGING NOISE AND VIBRATION IN A VEHICLE USING ELECTRO-DYNAMIC REGENERATIVE FORCE AND VEHICLE HAVING SAME

Номер: US20150034797A1
Автор: Jomaa Sam M., LEE Ping
Принадлежит: GM GLOBAL TECHNOLOGY OPERATIONS LLC

A system for managing noise and vibration in a vehicle includes a housing defining an internal cavity. A compliant member is attached to the housing and further defines the internal cavity. A magnet is operatively fixed to the housing in the cavity and has a magnetic field. A coil is positioned in the cavity and is configured so that there is relative movement between the coil and the magnet in the magnetic field in response to movement of the compliant member relative to the housing. A resistor is in electrical communication with the coil to form an electrical circuit. Relative movement of the coil in the magnetic field induces a current in the circuit that creates an opposing magnetic field, thereby reducing transmitted dynamic forces. 1. A system for managing noise and vibration in a vehicle comprising:a housing defining an internal cavity;a compliant member attached to the housing and further defining the internal cavity;a magnet having a magnetic field;a coil; wherein one of the magnet and the coil is operatively fixed to the housing in the cavity;wherein the other of the magnet and the coil is positioned in the cavity and is configured to move relative to the one of the magnet and the coil in the magnetic field in response to movement of the compliant member relative to the housing; anda resistor in electrical communication with the coil to form an electrical circuit; relative movement of said other of the magnet and the coil in the magnetic field inducing a current in the circuit that creates an opposing magnetic field.2. The system of claim 1 , wherein the circuit is without an electronic controller.3. The system of claim 1 , further comprising:a diaphragm operatively connected to the coil and at least partially separating the internal cavity into a first portion and a second portion; wherein the first portion is between the compliant member and the diaphragm and contains a first fluid, and the second portion contains the magnet, the coil, and the resistor; ...

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Номер записи: 20
01-05-2014 дата публикации

CARRIER DEVICE AND SUPPORTING ELEMENT THEREOF

Номер: US20140117829A1
Автор: Lin Ling-Er
Принадлежит:

A carrier device comprises a rail and a supporting element. The rail includes a first rail element and a second rail element disposed oppositely. The supporting element is slidably disposed between the first rail element and the second rail element along the rail. The supporting element includes a supporting base and a buffer element. The supporting base has a lateral wall. The buffer element has a lateral side as well as a first edge and a second edge disposed oppositely to each other. The buffer element is disposed on the lateral wall with its lateral side facing the lateral wall of the supporting base. The first edge is pressed against the first rail element through a first protruding portion of the first edge. The second edge is pressed against the second rail element. The material stiffness of the buffer element is less than that of the supporting base. 1. A carrier device , comprising:a rail comprising a first rail element and a second rail element disposed oppositely to each other; and a supporting base having a lateral wall; and', 'a buffer element having a lateral side as well as a first edge and a second edge disposed oppositely to each other, the buffer element being disposed on the lateral wall, the lateral side facing the lateral wall, the first edge comprising a first protruding portion, the first edge being pressed against the first rail element through the first protruding portion, the second edge being pressed against the second rail element, the material stiffness of the buffer element being less than the material stiffness of the supporting base., 'a supporting element slidably disposed between the first rail element and the second rail element along the rail, the supporting element comprising2. The carrier device as claimed in claim 1 , wherein the second edge comprises a second protruding portion claim 1 , the second edge is pressed against the second rail element through the second protruding portion.3. The carrier device as claimed in claim 1 ...

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Номер записи: 21
05-02-2015 дата публикации

Automated system to determine variable frequency drive skip frequency bands for vibration control

Номер: US20150039139A1
Автор: Gregory L. Meeuwsen
Принадлежит: Trane International Inc

A vibration control system for a variable speed cooling system includes a programmable controller in communication with a variable frequency drive (VFD). The programmable controller is programmed to command the VFD to operate at frequencies only outside of one or more frequency lockout bands automatically calculated by the programmable controller based on a comparison of newly acquired variable speed cooling system vibration data with previously stored variable speed cooling system vibration specification data.

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Номер записи: 22
06-02-2020 дата публикации

ACTIVE FORCE CANCELLATION AT STRUCTURAL INTERFACES

Номер: US20200039316A1
Автор: "OShea Colin Patrick", Belter Joseph Thomas, Ekchian Jack A., Giovanardi Marco, Hsu David Ta-wei, Tucker Clive
Принадлежит: ClearMotion, Inc.

In one embodiment, certain aspects of forces at a structural interface applied by one actuator are mitigated by a secondary actuator that applies a secondary force. In some embodiments the secondary actuator applies a static force. In yet another embodiment, an actuator is used to apply a force on a wheel assembly of a vehicle to detect and/or ameliorate the effect of certain tire incongruities. 1. A method of mitigating an effect of a first force applied to a first component , the method comprising:characterizing an aspect of the first force, wherein the first force is applied by a first actuator to a first component;determining a second force determined based at least in part on the aspect of the first force;applying the second force by a reaction actuator thereby at least partially mitigating the effect of the first force on the first component.2. The method of claim 1 , wherein:the first component is one of a vehicle body and a top mount physically attached to the vehicle body;the first force is applied to the first component by an actuator component of the first actuator.3. The method of further comprising:determining a reaction signal, such that transmission of the reaction signal to the reaction actuator causes the reaction actuator to generate the second force;transmitting the reaction signal to the reaction actuator, thereby causing the reaction actuator to generate the second force.4. The method of claim 3 , wherein the first actuator is a suspension system actuator that comprises:a cylinder that includes a compression chamber and an extension or a rebound chamber;a piston that is physically attached to a piston rod, wherein a first side of the piston is exposed to fluid in the compression chamber and a second side of the piston is exposed to fluid in the rebound chamber;a hydraulic pump, wherein the hydraulic pump is in fluid communication with the rebound chamber and the compression chamber.5. The method of claim 4 , wherein characterizing the aspect of ...

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Номер записи: 23
16-02-2017 дата публикации

Active damping device and design method

Номер: US20170045109A1
Автор: Daisuke Matsuka, Takashi Saegusa, Toshihiro Arisaka
Принадлежит: HITACHI LTD

A damping device and a design method provide an active damping for a device in which vibration is to be reduced. The damping device includes vibration detection means for detecting a vibration of the object; vibration generation means for generating a distortion on a portion of the object; control means for controlling the vibration generation means by a signal from the vibration detection means; and signal input and output means for transferring a signal with the control means. A driving force generation signal is received from outside through the signal input and output means, the driving force corresponding to the driving force generation signal is generated by the control means, the selected vibration generation means is driven by the driving force, and vibration state information obtained from the selected vibration detection means is output from the control means to the outside through the signal input and output means.

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Номер записи: 24
03-03-2022 дата публикации

A Vibration Control System and Related Methods

Номер: US20220066483A1
Автор: Lai Szu Cheng, SALLOUM Rogério, Yao Kui
Принадлежит:

A vibration control system includes a plurality of spatially distributed transducer elements, a switching circuit, one or more vibration control circuits, and a controller circuit. The switching circuit is connected to each of the transducer elements. The one or more vibration control circuits are configured to perform vibration control, each of the one or more vibration control circuits being connected to the switching circuit. The controller circuit is configured to control the one or more vibration control circuits and the switching circuit. The switching circuit is configured to interconnect selected ones of the transducer elements based on a switching signal provided by the controller circuit, the switching signal being in response to a vibration condition, to adaptively form a group of interconnected transducer elements. The switching circuit is further configured to connect the group of interconnected transducer elements to a selected at least one of the one or more vibration control circuits for receiving a single vibration control signal or electrical impedance source corresponding to the vibration condition. 1. A vibration control system comprising:a plurality of spatially distributed transducer elements;a switching circuit connected to each of the transducer elements;one or more vibration control circuits configured to perform vibration control, each of the one or more vibration control circuits being connected to the switching circuit; anda controller circuit configured to control the one or more vibration control circuits and the switching circuit,wherein the switching circuit is configured to interconnect selected ones of the transducer elements based on a switching signal provided by the controller circuit, the switching signal being in response to a vibration condition, to adaptively form a group of interconnected transducer elements; andwherein the switching circuit is further configured to connect the group of interconnected transducer elements to ...

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Номер записи: 25
26-02-2015 дата публикации

VEHICLE POWERTRAIN MOUNTING SYSTEM AND METHOD OF DESIGNING SAME

Номер: US20150053496A1
Автор: Jomaa Sam M., Weir Daniel F.
Принадлежит: GM GLOBAL TECHNOLOGY OPERATIONS LLC

A powertrain mounting system for a vehicle powertrain includes a first powertrain mount that exhibits a first gradual rate of change of static stiffness when under load. The mounting system also includes a second powertrain mount that exhibits a second gradual rate of change of static stiffness when under load. The first gradual rate of change of static stiffness is related to the second gradual rate of change of static stiffness by a static equilibrium torque balance equation of respective displacements at the first and the second powertrain mounts. The static equilibrium torque balance equation is based in part on a spatial arrangement of the first and the second powertrain mounts relative to the powertrain. A method of designing the powertrain mounting system determines the first and second gradual rates of change of static stiffness under load to achieve efficient energy management. 1. A method of designing a powertrain mounting system for a vehicle powertrain , the powertrain mounting system having a plurality of powertrain mounts including a first powertrain mount and a second powertrain mount , the powertrain mounts having a spatial arrangement relative to the powertrain; the method comprising:selecting a first gradual rate of change of static stiffness under load for the first powertrain mount; wherein the first gradual rate of change of static stiffness of the first powertrain mount includes a first average rate of change of static stiffness in a first range of dynamic loads, and a second average rate of change of static stiffness in a second range of dynamic loads; wherein the first average rate of change of static stiffness is less than the second average rate of change of stiffness; wherein loads in the first range of dynamic loads are lower than loads in the second range of dynamic loads;determining a corresponding second gradual rate of change of static stiffness under load for the second powertrain mount using the selected first gradual rate of change ...

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Номер записи: 26
04-03-2021 дата публикации

PARAMETER SETTING METHOD AND CONTROL APPARATUS

Номер: US20210062890A1
Автор: LI Zhenxing, Minami Hiroshi
Принадлежит:

A parameter setting method includes a parameter value changing step of, when the magnitude of a deviation that is a difference between a command position and an actual position of a movable portion is greater than or equal to a prescribed value during operation of an active damper, selecting an unselected set of candidate values from among a plurality of sets of candidate values and changing the values of respective types of parameters of the active damper to the selected set of candidate values, and when the magnitude of the deviation is less than the prescribed value, not changing the values of the respective types of the parameters. After the parameter value changing step is finished, the parameter value changing step is repeated until the magnitude of the deviation becomes less than the prescribed value. 1. A method of setting a parameter for adjusting vibration isolation characteristics of a vibration isolation apparatus , performed by a control apparatus , whereina device that includes at least one axis and a movable portion driven by a servo motor on the axis is disposed on the vibration isolation apparatus,the control apparatus controls the device, andthe control apparatus includes a storage unit configured to store a plurality of sets of candidate values of parameters for adjusting the vibration isolation characteristics of the vibration isolation apparatus, wherein each of the sets of candidate values contains candidate values of respective types of the parameters, the parameter setting method comprising:a servo motor control step of controlling the servo motor to position the movable portion at a command position; anda parameter value changing step of, when a magnitude of a deviation that is a difference between the command position and an actual position of the movable portion is greater than or equal to a prescribed value during operation of the vibration isolation apparatus, selecting an unselected set of candidate values from among the plurality of ...

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Номер записи: 27
26-03-2015 дата публикации

ACTIVE VIBRATION ISOLATION SYSTEM

Номер: US20150084249A1
Автор: Kraner Emil, Lopes Antonio
Принадлежит: Technical Manufacturing Corporation

An active damping system for use in connection with a vibration isolation system includes an intermediate mass between a base and an isolated payload. The intermediate mass is supported by at least one support element which also supports at least substantially all of the static forces of the isolated payload. An actuator dampens and isolates dynamic forces acting on the intermediate mass from the isolated payload. The active damping system also includes a payload support element and a passive damping element, both of which are coupled at one end to the payload platform and at an opposite end to the intermediate mass. A sensor is affixed to the intermediate mass to generate a feedback signal to a processor coupled to the actuator. 1an intermediate mass;plural payload support elements configured to be coupled between the isolated payload and the intermediate mass;plural intermediate mass support elements configured to be coupled between the intermediate mass and the base, wherein the intermediate mass support elements are configured to support at least 70% of a static force of the isolated payload;an active damping actuator having one end coupled to the intermediate mass and an opposite end configured to be coupled to the base, wherein the active damping actuator exhibits a stiffness at least two orders of magnitude less than a stiffness exhibited by the intermediate mass support element;a first sensor configured to generate a first signal responsive to movement of the intermediate mass caused by dynamic forces; anda compensation module configured to be coupled to the first sensor and the active damping actuator, the compensation module configured to respond to the first sensor signal by actuating the active damping actuator to dampen the dynamic forces acting on the intermediate mass.. An active damping system configured to be positioned between a base and an isolated payload, the active damping system comprising: This application is a continuation of U.S. patent ...

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Номер записи: 28
14-03-2019 дата публикации

User-tuned, active vibration-isolation system

Номер: US20190078643A1
Автор: Emil Kraner, Jeffrey L. WORTHEY, John E. Booth, Steven T. Ryan
Принадлежит: Technical Manufacturing Corp

Apparatus and methods to reduce unwanted motion in precision instruments are described. An active vibration-isolation system may be configured to receive a user-selectable setting, sense a stability of operation of the vibration-isolation system, and indicate whether the user-selectable setting provides stable vibration isolation. The settings may be changed by the user to improve vibration-isolation performance without requiring installation of the system by a skilled vibration-isolation engineer.

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Номер записи: 29
24-03-2016 дата публикации

ACTIVE VIBRATION ISOLATION DEVICE

Номер: US20160084338A1
Автор: Ito Yuji
Принадлежит: KEIHIN CORPORATION

An active vibration isolation device includes: a housing fixed to a vibration isolation target; a movable shaft elastically supported by the housing displaceably in an axial direction; a yoke having an umbrella-shaped part provided consecutively and coaxially with the movable shaft and a circular cylindrical part provided consecutively with an outer circumference of the umbrella-shaped part and coaxially with the movable shaft; a ring-shaped coil fixed between the movable shaft and the cylindrical part; and first and second permanent magnets in a ring shape attached to the yoke. The first permanent magnet is smaller in diameter than the coil and is disposed inside the coil in a radial direction of the coil. The second permanent magnet is larger in diameter than the coil and is disposed outside the coil in the radial direction so that part thereof is made to face an inside of the yoke. 1. An active vibration isolation device comprising:a housing fixed to a vibration isolation target;a movable shaft supported by the housing via an elastic member that allows the movable shaft to move in an axial direction thereof;a yoke coaxially provided with the movable shaft and having an umbrella-shaped part radially extending from the movable shaft and a cylindrical wall part axially extending from an outer circumference of the umbrella-shaped part;a first ring-shaped permanent magnet attached to the yoke;a ring-shaped coil that is fixed to the housing and disposed radially outside relative to the first ring-shaped permanent magnet; anda second ring Shaped permanent magnet attached to an inner surface of the cylindrical wall part of the yoke so as to face radially inward and disposed radially outside relative to the ring-shaped coil.2. The active vibration isolation device according to claim 1 , wherein the first ring-shaped permanent magnet is fixed at one axial end thereof to an inner surface of the umbrella-shaped part.3. The active vibration isolation device according to claim ...

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Номер записи: 30
19-06-2014 дата публикации

MAGNET-BASED ANTI-COGGING APPARATUSES AND SYSTEMS FOR APPLYING AN ANTI-COGGING TORQUE ON A ROTATING SHAFT

Номер: US20140165952A1
Автор: Towne Raymond
Принадлежит:

An anti-cogging apparatus includes a first support member, a second support member, a first set of magnets, and a second set of magnets. The first support member is configured to be connected to and rotate with a rotatable shaft. The second support member does not rotate and is configured not to move with the first support member. The first set of magnets is mounted on the first support member in an alternating polarity or a non-alternating polarity configuration. The second set of magnets is mounted on the second support member in an alternating polarity configuration or a non-alternating polarity configuration. The first set of magnets magnetically interacts with the second set of magnets to provide an anti-cogging torque on the rotatable shaft. 1. An anti-cogging apparatus comprising:a first support member configured to be connected to and rotate with a rotatable shaft;a second support member that does not rotate and is configured not to move with the first support member;a first set of magnets mounted on the first support member in either a first alternating polarity configuration or a first non-alternating polarity configuration; anda second set of magnets mounted on the second support member in either a second alternating polarity configuration or a second non-alternating polarity configuration,wherein the first set of magnets magnetically interacts with the second set of magnets to provide an anti-cogging torque on the rotatable shaft.2. The anti-cogging apparatus of claim 1 , wherein the first support member is configured to be (i) directly connected to and rotate with the rotatable shaft claim 1 , or (ii) connected through a gearset or speed varying device to the rotatable shaft.3. The anti-cogging apparatus of claim 1 , wherein:the first set of magnets having at least one magnet mounted on the first support member in a first polarity configuration; andthe second set of magnets having at least one magnet mounted on the second support member in a second ...

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Номер записи: 31
29-03-2018 дата публикации

Active vibration damping device

Номер: US20180086194A1
Автор: Takashi Yamaguchi, Tatsuhiro Yone
Принадлежит: Honda Motor Co Ltd

In the case that an all-cylinder operational state is detected by an ENG vibration pattern determining function, an ACM-ECU executes an amplitude variable—phase fixed control. Further, in the case that a cylinder paused operational state is detected by the ENG vibration pattern determining function, the ACM-ECU executes an amplitude variable—phase variable control exhibiting a large vibration damping effect.

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Номер записи: 32
29-03-2018 дата публикации

ACTIVE VIBRATION DAMPING DEVICE

Номер: US20180086195A1
Автор: Yamaguchi Takashi, Yone Tatsuhiro
Принадлежит:

An ACM-ECU executes an amplitude variable-phase variable control for variably controlling both the amplitude and phase of active vibrations generated by an actuator according to rotation information, in the case that an engagement rate Lr detected by an LC engagement rate detecting function is greater than or equal to a predetermined engagement rate Lr_th. 1. An active vibration damping device comprising an engine mount interposed between a vehicle body and a multi-cylinder internal combustion engine mounted in the vehicle , and which is adapted to suppress vibrations transmitted from a side of the internal combustion engine to a side of the vehicle body , by active vibrations generated by an actuator of the engine mount , comprising:a vibration control unit adapted to control the active vibrations generated by the actuator on basis of rotation information of the internal combustion engine;wherein the vibration control unit:includes an engagement rate detection unit adapted to detect an engagement rate of a lock-up clutch mounted in the vehicle;executes an amplitude variable-phase fixed control for variably controlling amplitude of the active vibrations generated by the actuator according to the rotation information, together with fixedly controlling phase of the active vibrations generated by the actuator; andexecutes an amplitude variable-phase variable control for variably controlling the amplitude and phase of the active vibrations generated by the actuator according to the rotation information, in the case that the engagement rate detected by the engagement rate detection unit is greater than or equal to a predetermined engagement rate.2. The active vibration damping device according to claim 1 , further comprising:a lock-up clutch control unit adapted to control the engagement rate of the lock-up clutch in accordance with a travel velocity or an acceleration of the vehicle;wherein the engagement rate detection unit acquires information of the engagement rate ...

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Номер записи: 33
29-03-2018 дата публикации

ACTIVE VIBRATION DAMPING DEVICE

Номер: US20180086196A1
Автор: Tooyama Takashi, Yamaguchi Takashi, Yone Tatsuhiro
Принадлежит:

Normally, a phase fixed control is executed. In the event that a vibration value VAPP of an engine becomes greater than or equal to a predetermined vibration value VAPP_th, a first phase of an active vibration generated by a first actuator and a second phase of an active vibration generated by a second actuator are changed in mutually opposite directions. 1. An active vibration damping device comprising first and second engine mounts interposed between a vehicle body and a multi-cylinder internal combustion engine mounted in the vehicle , and which is adapted to suppress vibrations transmitted from a side of the internal combustion engine to a side of the vehicle body , by active vibrations generated by a first actuator of the first engine mount and a second actuator of the second engine mount , comprising:a vibration control unit adapted to control the active vibrations generated by the first actuator and the second actuator on basis of rotation information of the internal combustion engine;wherein the vibration control unit:includes a vibration estimating unit adapted to estimate a vibration value of the internal combustion engine on basis of the rotation information of the internal combustion engine;executes an amplitude variable-phase fixed control for variably controlling a first amplitude of the active vibration generated by the first actuator, and a second amplitude of the active vibration generated by the second actuator, respectively, according to the rotation information, together with fixedly controlling a first phase of the active vibration generated by the first actuator, and a second phase of the active vibration generated by the second actuator, respectively; andchanges the first phase and the second phase in mutually opposite directions, in the case that the vibration value estimated by the vibration estimating unit is greater than or equal to a predetermined vibration value.2. The active vibration damping device according to claim 1 , wherein claim ...

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Номер записи: 34
29-03-2018 дата публикации

Active vibration damping device

Номер: US20180087597A1
Автор: Fumitaka Abe, Satoshi Kono, Takashi Tooyama, Takashi Yamaguchi
Принадлежит: Honda Motor Co Ltd

An ACM-ECU executes a first switching control for switching from a phase fixed control to a phase variable control, or a second switching control for switching from the phase variable control to the phase fixed control, simultaneously with detecting or after having detected switching of a gear position by a gear position detecting function. A current waveform map is used at a time of execution of the phase variable control, and a correction map is used at a time of execution of the phase fixed control.

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Номер записи: 35
29-03-2018 дата публикации

ACTIVE VIBRATION DAMPING DEVICE

Номер: US20180087600A1
Автор: ABE Fumitaka, KONO Satoshi, Nemoto Hirotomi, Tooyama Takashi, Yamaguchi Takashi
Принадлежит:

A phase variable control is prohibited in the case that a rotational speed NE of the engine is less than a first predetermined rotational speed NE_th 1. An active vibration damping device comprising an engine mount interposed between a vehicle body and a multi-cylinder internal combustion engine mounted in the vehicle , and which is adapted to suppress vibrations transmitted from a side of the internal combustion engine to a side of the vehicle body , by active vibrations generated by an actuator of the engine mount , comprising:a vibration control unit adapted to control the active vibrations generated by the actuator on the basis of a rotational speed of the internal combustion engine;wherein the vibration control unit:includes a rotational speed detection unit adapted to detect the rotational speed of the internal combustion engine;executes an amplitude variable-phase variable control for variably controlling amplitude and phase of the active vibrations generated by the actuator according to the rotational speed detected by the rotational speed detection unit; andprohibits the amplitude variable-phase variable control, in the case that the rotational speed detected by the rotational speed detection unit is less than a predetermined rotational speed.2. The active vibration damping device according to claim 1 , wherein the vibration control unit:in the case that the amplitude variable-phase variable control is prohibited,executes an amplitude variable-phase fixed control for variably controlling the amplitude of the active vibrations generated by the actuator according to the rotational speed detected by the rotational speed detection unit, together with fixedly controlling the phase of the active vibrations generated by the actuator.3. The active vibration damping device according to claim 2 , wherein:the vehicle body is constituted to include a main frame and a sub-frame;the engine mount is fixed to the sub-frame; andthe vibration control unit:during the ...

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Номер записи: 36
25-03-2021 дата публикации

Electromagnetic-Piezoelectric Composite Vibration Control Device Based on Synchronized Switch Damping Technology

Номер: US20210091296A1
Автор: Duan Chaoqun, Luo Jun, Peng Yan, PU Huayan, Sun Yi, Wang Min, XIE Shaorong, ZHANG Dong, Zhang Shunqi
Принадлежит: SHANGHAI UNIVERSITY

The present invention discloses an electromagnetic-piezoelectric composite vibration control device based on a synchronized switch damping technology, and relates to the technical field of vibration abatement. An upper rigid frame is arranged at the upper part of a lower rigid frame, an upper guiding component is installed inside the upper rigid frame, a lower guiding component is installed inside a lower rigid component, a guide rod is nested inside the upper guiding component and the lower guiding component, a load platform is fixed to the upper end of the guide rod, an upper idler wheel mechanism and a lower idler wheel mechanism are fixedly sleeved on the guide rod and are positioned between the upper guiding component and the lower guiding component respectively, an electromagnetic mechanism is fixedly sleeved outside the guide rod, an elastic component is sleeved outside the lower idler wheel mechanism, one end of each piezoelectric cantilever beam is fixed between the upper rigid frame and the lower rigid frame, the other end of each piezoelectric cantilever beam is arranged between the upper idler wheel mechanism and the lower idler wheel mechanism, and the piezoelectric cantilever beams and the electromagnetic mechanism are connected with a circuit system respectively. The device is simple in structure and reliable in performance, a voltage source does not need to be provided externally, and the device is of an adaptive characteristic. 1. A electromagnetic-piezoelectric composite vibration control device based on a synchronized switch damping technology , wherein the device comprises a load platform , a guide rod , an upper rigid frame , a lower rigid frame , an upper guiding component , a lower guiding component , an upper idler wheel mechanism , a lower idler wheel mechanism , an elastic component , an electromagnetic mechanism , a circuit system and a plurality of piezoelectric cantilever beams , the upper rigid frame is arranged at the upper part of the ...

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Номер записи: 37
07-04-2016 дата публикации

VIBRATION ISOLATION SYSTEMS INCLUDING MULTI-PARAMETER ISOLATORS PROVIDING PIEZOELECTRIC-BASED DAMPING

Номер: US20160097436A1
Автор: Goold Ryan, Hindle Timothy
Принадлежит: HONEYWELL INTERNATIONAL INC.

Embodiments of a vibration isolation system are provided. In one embodiment, the vibration isolation system includes a first isolator having opposing mounting interfaces, a tuning spring disposed between the opposing mounting interfaces, and a piezoelectric actuator disposed between the opposing mounting interfaces and coupled in series with the tuning spring, as taken along a first load path through the first isolator. A controller is operably coupled to the piezoelectric actuator. During operation of the isolation system, the controller varies a control voltage supplied to the piezoelectric actuator to dampen vibrations transmitted through the first load path. 1. A vibration isolation system , comprising: opposing mounting interfaces;', 'a tuning spring disposed between the opposing mounting interfaces; and', 'a piezoelectric actuator disposed between the opposing mounting interfaces and coupled in series with the tuning spring, as taken along a first load path through the first isolator; and, 'a first isolator, comprisinga controller coupled to the piezoelectric actuator and, during operation of the isolation system, varying a control voltage supplied to the piezoelectric actuator to dampen vibrations transmitted through the first load path.2. The vibration isolation system of further comprising a load cell coupled to the controller and configured to supply a load signal thereto indicative of a load through the isolator claim 1 , the controller varying the control voltage as a function of the load signal.3. The vibration isolation system of further comprising one or more motion sensors operably coupled to the controller and configured to supply thereto a relative motion signal indicative of the relative motion between the opposing mounting interfaces claim 1 , and the controller further configured to vary the control voltage supplied to the piezoelectric actuator as a function of the motion signal.4. The vibration isolation system of wherein the one or more ...

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Номер записи: 38
01-04-2021 дата публикации

METHODS OF ATTENUATING VIBRATION TRANSFER TO A PASSENGER COMPARTMENT

Номер: US20210095737A1
Автор: Medinei Nojan, OBLIZAJEK KENNETH L., Suchta Wojciech E.
Принадлежит: GM GLOBAL TECHNOLOGY OPERATIONS LLC

Methods of attenuating vibration transfer to a body of a vehicle using a dynamic mass of the vehicle via minimizing a particular angular frequency of a wheel. One method includes receiving vehicle information over a time interval and determining, based on the vehicle information, an instantaneous angular velocity that corresponds to a particular angular frequency of the wheel. This method includes generating a gain-and-phase-compensated actuator drive command to counteract a vibration that occurs at the particular angular frequency of the wheel, which is based on the instantaneous angular velocity, and communicating the gain-and-phase-compensated actuator drive command to a hydraulic mount assembly that supports the dynamic mass. This method includes actuating an actuator of the hydraulic mount assembly in response to the gain-and-phase-compensated actuator drive command in order to minimize the vibration transfer to the body due to the vibration that occurs at the particular angular frequency of the wheel. 1. A method of attenuating vibration transfer to a body of a vehicle using a dynamic mass of the vehicle , and the vehicle includes at least one wheel , the method comprising:receiving vehicle information over a time interval;determining, based on the vehicle information, an instantaneous angular velocity that corresponds to a particular angular frequency of the wheel;generating a gain-and-phase-compensated actuator drive command to counteract a vibration that occurs at the particular angular frequency of the wheel, which is based on the instantaneous angular velocity;communicating the gain-and-phase-compensated actuator drive command to a hydraulic mount assembly that supports the dynamic mass; andactuating an actuator of the hydraulic mount assembly in response to the gain-and-phase-compensated actuator drive command in order to minimize the vibration transfer to the body due to the vibration that occurs at the particular angular frequency of the wheel.2. The ...

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Номер записи: 39
26-03-2020 дата публикации

CRANK VELOCITY DRIVELINE FILTERING FOR CONSECUTIVE MISFIRE DETECTION

Номер: US20200094842A1
Автор: Anagnostopoulos-Politis Ilias, Chang Jaeyeong, Moote Richard K., Varady Arthur J., Wang Zhe, Zhang Yan
Принадлежит:

A misfire detection system and method for a vehicle utilize a controller to obtain a crankshaft speed signal indicative of a rotational speed of an engine crankshaft connected to a device that mitigates vibrational disturbances at the crankshaft caused by misfires of the engine, detect that a first firing event of the engine is a first misfire based on the crankshaft speed signal, monitor a vibrational response of the crankshaft, detect that a consecutive second firing event of the engine is a second misfire based on a first modified crankshaft speed signal and the first set of thresholds, and in response to detecting the second misfire, reset the monitoring of the vibrational response of the crankshaft including modifying the amplitude of the crankshaft speed signal to obtain a second modified crankshaft speed signal and comparing the second modified crankshaft speed signal to a set of thresholds. 1. A misfire detection system for a vehicle , the system comprising:a crankshaft position sensor configured to generate a crankshaft speed signal indicative of a rotational speed of a crankshaft of an engine of the vehicle, wherein the crankshaft is connected to a device that mitigates vibrational disturbances at the crankshaft caused by misfires of the engine; and detect that a first firing event of the engine is a first misfire based on the crankshaft speed signal;', 'in response to detecting the first misfire, monitor a vibrational response of the crankshaft including modifying an amplitude of the crankshaft speed signal to obtain a first modified crankshaft speed signal and comparing the first modified crankshaft speed signal to a first set of thresholds;', 'detect that a consecutive second firing event of the engine is a second misfire based on the first modified crankshaft speed signal and the first set of thresholds; and', 'in response to detecting the second misfire, reset the monitoring of the vibrational response of the crankshaft including modifying the ...

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Номер записи: 40
17-07-2014 дата публикации

VIBRATION ISOLATION SYSTEM

Номер: US20140197299A1
Автор: OPPENHEIMER Charles H., Yearout Russell P., ZANDONATTI Allen F.
Принадлежит: Hewlett-Packard Development Company, L.P.

A vibration isolation system, including a housing and a first isolation member which further includes a receptacle to receive an outer body of a motor, a first plurality of compliant arms, and a second plurality of compliant arms. Each compliant arm of the first isolation member has a first end and a second end. The first end of each of the compliant arms is coupled to the receptacle, and the second end of each of the compliant arms is coupled to the housing. 1. A vibration isolation system , comprising:a housing; anda first isolation member comprising a receptacle to receive an outer body of a motor, a first plurality of compliant arms, and a second plurality of compliant arms;wherein each compliant arm of the first isolation member has a first end and a second end, the first end of each of the compliant arms is coupled to the receptacle, and the second end of each of the compliant arms is coupled to the housing.2. The vibration isolation system of claim 1 , wherein first isolation member is monolithically formed.3. The vibration isolation system of claim 2 , wherein the first isolation member comprises a creep resistant material.4. The vibration isolation system of claim 1 , wherein the motor is suspended within the housing via the first isolation member.5. The vibration isolation system of claim 1 , further comprising:a second isolation member comprising a receptacle to receive the outer body of the motor, a third plurality of compliant arms, and a fourth plurality of compliant arms;wherein each of the compliant arm of the second isolation member has a first end and a second end, the first end of each of the compliant arms is coupled to the receptacle, and the second end of each of the compliant arms is coupled to the housing.6. The vibration isolation system of claim 5 , wherein the outer body of the motor has a central axis claim 5 , and the second isolation member is axially offset from the first isolation member.7. The vibration isolation system of claim 6 , ...

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Номер записи: 41
25-04-2019 дата публикации

Active Strut Control for Vibration Isolation of Large Payloads

Номер: US20190120320A1
Автор: Jed E. Donaldson
Принадлежит: Boeing Co

A system and a method that isolate a payload from the effects of vibrations by providing an active feedback path that enhances the isolation performance of a passive vibration isolation system at all relevant frequencies. The system comprises a kinematic arrangement of three bipod pairs of hybrid isolation struts to produce a fully kinematic suspension system. The active enhancement mechanism incorporates accelerometer feedback on each of the six hybrid isolation struts, blended with relative displacement measurements, to produce a transfer function that provides a specified alignment of a suspended component (with another component) at low frequency, but inertial stabilization at high frequency. Passive roll-off is produced by a series of disc flexures in each hybrid isolation strut.

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Номер записи: 42
27-05-2021 дата публикации

Torsional vibration damper and control device for torsional vibration damper

Номер: US20210156453A1
Автор: Hideyuki Nishida, Masayuki Ishibashi, Taiki Nakamura
Принадлежит: Toyota Motor Corp

A torsional vibration damper that can reduce collision noise of an inertia body when a rotary member is stopped, and a control device therefore. In the torsional vibration damper, a rotary member is mounted on an output shaft of an engine such that none of rolling masses is situated within a predetermined angle range above a rotational center axis of the rotary member when the engine is stopped. Therefore, when the engine is stopped, the inertia body will not be supported by only one of the rolling masses situated within the predetermined angle range.

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Номер записи: 43
31-07-2014 дата публикации

Stationary vibration isolation system and method for controlling a vibration isolation system

Номер: US20140209779A1
Автор: Kluth Peter, Kropp Peter A.
Принадлежит: INTEGRATED DYNAMICS ENGINEERING GMBH

The invention relates to a stationary vibration isolation system and to a method for controlling such a system which comprises a damper effective in a horizontal direction which includes a fluid of variable viscosity. 1. A stationary vibration isolation system , comprising a load that is anti-vibration mounted in a horizontal direction and vertical direction on a base and which comprises a moving mass;wherein the vibration-isolated load is coupled to the base via a damper which is effective in the horizontal direction and which comprises a fluid of variable viscosity.2. The stationary vibration isolation system as claimed in claim 1 , wherein the fluid is a non-Newtonian fluid.3. The stationary vibration isolation system as claimed in claim 1 , wherein the fluid is an electrorheological or magnetorheological fluid.4. The stationary vibration isolation system as claimed in claim 3 , wherein the vibration isolation system includes an active control which detects motion of the mass and controls the viscosity of the electrorheological or magnetorheological fluid based thereon.5. The stationary vibration isolation system as claimed in claim 1 , wherein the vibration isolation system which is an active vibration isolation system comprises at least one sensor for detecting vibrations of the anti-vibration mounted load and/or of the ground claim 1 , and at least one actuator for actively reducing vibrations.6. The stationary vibration isolation system as claimed in claim 5 , wherein the actuator is a magnetic actuator.7. The stationary vibration isolation system as claimed in claim 1 , wherein the vibration-isolated load is coupled to the base via a damper which is effective in the vertical direction and which comprises a fluid of variable viscosity.8. The stationary vibration isolation system as claimed in claim 1 , wherein the fluid of variable viscosity is arranged in a vibration isolator.9. The stationary vibration isolation system as claimed in claim 8 , wherein the ...

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Номер записи: 44
10-05-2018 дата публикации

VIBRATION ABSORBER AND SEMI-ACTIVE VIBRATION REDUCTION METHOD USING THE SAME

Номер: US20180128345A1
Автор: CHEN YI-HSUAN, KAI Chen-Yu, Lee Jung-Che, TAI Chung-Yu, WANG JEN-JI
Принадлежит:

A vibration absorber includes a screw, a displacement adjustment member, a first spring, a second spring, a mass block, a casing, a cover and a connector. The displacement adjustment member is engaged with the screw. The mass block is located between the first spring and the second spring, wherein the mass block respectively connects the first spring and the second spring on both sides and the screw passes through the mass block. The casing encloses the screw, the displacement adjustment member, the first spring, the second spring and the mass block. The cover covers one opening of the casing. The connector covers the other opening of the casing. The first spring is located between the mass block and the displacement adjustment member and connects respectively the mass block and the displacement adjustment member. The coefficients of elasticity of both the first spring and the second spring are both non-linear. 1. A vibration absorber for being installed on a rotation module , the vibration absorber comprises:a screw;a displacement adjustment member engaged with the screw;a first spring;a second spring;a mass block located between the first spring and the second spring, wherein the mass block respectively connects the first spring and the second spring on both sides, and the screw passes through the mass block;a casing configured to enclose the screw, the displacement adjustment member, the first spring, the second spring and the mass block;a cover configured to cover one opening of the casing; anda connector configured to cover the other opening of the casing;wherein the first spring is located between the mass block and the displacement adjustment member and connects respectively the mass block and the displacement adjustment member by both ends, the second spring is located between the mass block and the cover and connects respectively the mass block and the cover by both ends, and the coefficients of elasticity of both the first spring and the second spring are ...

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Номер записи: 45
10-05-2018 дата публикации

AUTOMATED SYSTEM TO DETERMINE VARIABLE FREQUENCY DRIVE SKIP FREQUENCY BANDS FOR VIBRATION CONTROL

Номер: US20180129231A1
Автор: Meeuwsen Gregory L.
Принадлежит:

A vibration control system for a variable speed cooling system includes a programmable controller in communication with a variable frequency drive (VFD). The programmable controller is programmed to command the VFD to operate at frequencies only outside of one or more frequency lockout bands automatically calculated by the programmable controller based on a comparison of newly acquired variable speed cooling system vibration data with previously stored variable speed cooling system vibration specification data. 120-. (canceled)21. A variable speed cooling and acoustic noise control system , comprising:at least one variable speed motor;a variable speed drive (VFD) for controlling the speed of at least one variable speed motor;one or more acoustic noise sensors installed at one or more predetermined locations;a data acquisition system that acquires data associated with the at least one acoustic noise sensor, anda programmable controller in communication with the VFD and the data acquisition system, wherein the programmable controller:directs a VFD frequency sweep wherein the at least one variable speed motor sweeps through a range of frequencies;determines one or more frequency lockout bands based on data from the data acquisition system and amplitude limits, andcommands the VFD to operate the at least one variable speed motor at one or more frequencies outside the one or more frequency lockout bands.22. The variable speed cooling and acoustic noise control system according to claim 21 , wherein the range of frequencies is the full operating frequency range of the at least one variable speed motor.23. The variable speed cooling and acoustic noise control system according to claim 21 , wherein at least one predetermined location comprises a variable speed fan motor.24. The variable speed cooling and acoustic noise control system according to claim 21 , wherein at least one predetermined location comprises a variable speed compressor motor.25. A variable speed cooling ...

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Номер записи: 46
11-05-2017 дата публикации

METHOD FOR CALCULATING OPTIMAL CONTROL FORCE OF ACTIVE MASS DAMPER AND CONTROLLING ACTIVE MASS DAMPER

Номер: US20170130802A1
Автор: Chung Lan, Lee Sang Hyun, Woo Sung Sik
Принадлежит:

The present invention relates to a method for calculating optimal control force of an active mass damper and controlling the active mass damper, which is used for vibration control of a structure, the method comprising: (a) sensing frequency and an acceleration response generated in a structure in real time by a sensor, wherein the frequency and the acceleration response are structural responses; (b) calculating velocity and displacement of the active mass damper by integrating the acceleration response by an integral calculation module; (c) calculating the optimal control force using a weighting function and a zero point calibration signal according to the calculated velocity, the calculated displacement, and the calculated displacement, by a control force calculation module; and (d) controlling driving of an actuator according to the calculated optimal control force. Accordingly, the method/system for calculating optimal control force of an active mass damper and controlling the active mass damper according to the present invention can control a flow phenomenon of a moving mass body by a weighting function and a zero point calibration signal, enable stable control at a zero point, and remove signals other than those in a control mode through a band pass filter, thereby accurately generating a control signal and achieving performance which can satisfy a control target for each mode. 1. A method for calculating optimal control force of an active mass damper and controlling the active mass damper , the method comprising:{'sub': 'AMD', '(a) sensing frequency and an acceleration response (A) generated in a structure (S) in real time by a sensor, wherein the frequency and the acceleration response are structural responses;'}{'sub': AMD', 'AMD, '(b) calculating velocity (V) and displacement (D) of the active mass damper by integrating the acceleration response by an integral calculation module;'}{'sub': input', '1', '2', 'AMD', 'AMD', 'AMD, '(c) calculating an optimal ...

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Номер записи: 47
11-05-2017 дата публикации

ROTARY DAMPER

Номер: US20170130803A1
Автор: Willems Marco
Принадлежит: Audi AG

A rotary damper that is to be fastened to a first mass via a fastening part () comprises a damper housing () surrounding an electromagnetic damper motor () which is disposed along a central axis of the rotary damper, a hinged lever ) connected to a second mass, and a gearing () for transmitting and/or converting a relative rotation between the masses to the damper motor () such that vibrations are dampened. The fastening part () is connected to a bearing part () via an elastomer bearing (), the damper motor () being disposed on said bearing part (), and the damper housing () is connected to the hinged lever (), which is mounted so as to be able to rotate relative to the bearing part (). 19-. (canceled)10. A rotary damper , comprising:a damper housing defining an axis;a bearing part;an electromagnetic damper motor surrounded by the damper housing, said damper motor being arranged along the axis and supported by the bearing part;an elastomer bearing;a fastening part configured for connection to a first mass and connected via the elastomer bearing to the bearing part for fastening the rotary damper to the first mass;an articulated lever configured for connection to a second mass and connected to the damper housing, said articulated lever being rotatably mounted relative to the bearing part; anda gearing configured for transmitting and/or converting a relative rotation movement between the first and second masses onto the damper motor for vibration damping.11. The rotary damper of claim 10 , wherein the fastening part has an outside bearing surface and the bearing part has an inside bearing surface claim 10 , said elastomer bearing positioned between the inside bearing surface and the outside bearing surface.12. The rotary damper of claim 10 , wherein the fastening part includes a base plate and a cup-shaped base plate extension which projects from the base plate in a direction of the axis claim 10 , said base plate extension including a radial bottom portion and an ...

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Номер записи: 48
01-09-2022 дата публикации

METHOD AND APPARATUS FOR ISOLATING A VIBRATION OF A POSITIONING DEVICE

Номер: US20220275905A1
Автор: MAYINGER Philipp
Принадлежит:

A method and an apparatus for isolating a vibration of a positioning device are provided. The apparatus includes a base plate for the positioning device, at least one active bearing element for bearing the base plate on/at a foundation and at least one evaluation and control device. The apparatus includes at least one means for determining a foundation movement-dependent quantity, wherein the active bearing element is controllable by the at least one control and evaluation device on the basis of the foundation movement-dependent quantity. 1. An apparatus for isolating a vibration of a positioning device , the apparatus comprising:a base plate for the positioning device;a plurality of active bearing elements for bearing the base plate on/at a foundation;at least one means for determining a foundation movement-dependent quantity;at least one means for determining an inherent movement-dependent quantity of the positioning device, the means configured to perform a bearing element-specific determination of an inherent movement-dependent quantity of the positioning device; andat least one evaluation and control device being configured to control the active bearing elements based on the foundation movement-dependent quantity and these bearing element-specific quantities.2. The apparatus as claimed in claim 1 , wherein the at least one active bearing element further comprises at least one of a spring element and a damping element.3. The apparatus as claimed in claim 1 , further comprising:at least one means for determining a base plate movement-dependent quantity,wherein the at least one active bearing element is additionally controllable by the at least one evaluation and control device based on the base plate movement-dependent quantity.4. The apparatus as claimed in claim 3 , wherein the inherent movement-dependent quantity of the positioning device is determinable based on a model.5. The apparatus as claimed in claim 1 , wherein at least one of:a maximum producible ...

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Номер записи: 49
08-09-2022 дата публикации

STEWART VIBRATION ISOLATION PLATFORM WITH MACRO FIBER COMPOSITE PLATES AND CONTROL METHOD THEREOF

Номер: US20220282766A1
Автор: Ding Jiheng, Fang Xuan, Luo Jun, Peng Yan, PU Huayan, Sun Yi, Wang Min, XIE Shaorong
Принадлежит:

The present disclosure discloses a Stewart vibration isolation platform with Macro Fiber Composite (MFC) plates. The vibration isolation platform includes: an upper load platform, a lower foundation platform, a controller, and a plurality of single-leg vibration isolation unit groups arranged between the upper load platform and the lower foundation platform. Each of the single-leg vibration isolation unit groups includes two single-leg vibration isolation units. The single-leg vibration isolation unit includes a first diaphragm spring and a second diaphragm spring. An MFC actuator and an MFC sensor are respectively arranged on two sides of the first diaphragm spring and the second diaphragm spring. The MFC actuators and the MFC sensors are all connected to the controller. 1. A Stewart vibration isolation platform with Macro Fiber Composite (MFC) plates , comprising: an upper load platform , a lower foundation platform , a controller , and a plurality of single-leg vibration isolation unit groups arranged between the upper load platform and the lower foundation platform , wherein each of the single-leg vibration isolation unit groups comprises two single-leg vibration isolation units;the single-leg vibration isolation unit comprises a first diaphragm spring and a second diaphragm spring; an MFC actuator and an MFC sensor are respectively arranged on two sides of each of the first diaphragm springs and the second diaphragm springs; andthe MFC actuators and the MFC sensors are all connected to the controller.2. The Stewart vibration isolation platform with the MFC plates according to claim 1 , wherein there are three single-leg vibration isolation unit groups; and the three single-leg vibration isolation unit groups are distributed in the peripheral direction of the upper load platform and the lower foundation platform.3. The Stewart vibration isolation platform with the MFC plates according to claim 1 , wherein a plurality of upper groove groups are formed in a lower ...

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Номер записи: 50
31-05-2018 дата публикации

ACTIVE VIBRATION DAMPING DEVICE AND ACTIVE VIBRATION DAMPING METHOD

Номер: US20180149229A1
Автор: KONO Satoshi, Nemoto Hirotomi, Yamaguchi Takashi
Принадлежит:

A computer of an active vibration damping device calculates operation command values for an actuator from rotation information of a drive source, and corrects the operation command values in accordance with an internal temperature of the actuator. The computer applies a drive voltage to the actuator using a voltage duty ratio based on the corrected operation command values. The computer also estimates the internal temperature on the basis of an average duty ratio as an average of the voltage duty ratios in a predetermined interval. 1. An active vibration damping device , comprising:an actuator disposed between a drive source and a vehicle body; anda computer configured to suppress transmission of vibrations from the drive source to the vehicle body by causing the actuator to actively generate vibrations;wherein the computer comprises:a command value calculating unit configured to calculate an operation command value for the actuator from rotation information of the drive source;a command value correction unit configured to correct the operation command value in accordance with an internal temperature of the actuator;a drive control unit configured to apply a drive voltage to the actuator using a voltage duty ratio based on the corrected operation command value; andan internal temperature estimating unit configured to estimate the internal temperature on basis of an average duty ratio as an average of the voltage duty ratios in a predetermined interval.2. The active vibration damping device according to claim 1 , wherein:the computer further comprises a target current waveform calculating unit configured to calculate a target current waveform from the operation command value; andthe drive control unit calculates the voltage duty ratio on basis of the target current waveform.3. The active vibration damping device according to claim 2 , wherein:the target current waveform includes a rising current interval and a falling current interval; andthe predetermined interval ...

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Номер записи: 51
31-05-2018 дата публикации

ACTIVE VIBRATION DAMPING DEVICE AND ACTIVE VIBRATION DAMPING METHOD

Номер: US20180149230A1
Автор: KONO Satoshi, Nemoto Hirotomi, Yamaguchi Takashi
Принадлежит:

A computer of an active vibration damping device calculates an output average duty ratio which is used for realizing operation command values. On the basis of the operation command values and an integer value point number, which is set so as to become larger as a period of rotation of the drive source becomes longer, the computer calculates a reference average duty ratio for realizing the operation command values when an actuator internal temperature is a reference temperature. The computer calculates the actuator internal temperature on the basis of a deviation between the output average duty ratio and the reference average duty ratio. 1. An active vibration damping device , comprising:an actuator disposed between a drive source and a vehicle body; anda computer configured to suppress transmission of vibrations from the drive source to the vehicle body by causing the actuator to actively generate vibrations;wherein the computer comprises:an internal temperature estimating unit configured to calculate an internal temperature of the actuator;a command value calculating unit configured to calculate an operation command value for the actuator from rotation information of the drive source;a command value correction unit configured to correct the operation command value in accordance with the internal temperature;a drive control unit configured to apply a drive voltage to the actuator using a voltage duty ratio based on the corrected operation command value; anda point number calculating unit configured to obtain an integer value point number which is set so as to become larger as a period of rotation of the drive source becomes longer; andwherein the internal temperature estimating unit comprises:an output average duty ratio calculating unit configured to calculate an output average duty ratio, which is an average of target values or actually measured values of the voltage duty ratios that are used for realizing the operation command value, when the period of rotation ...

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Номер записи: 52
09-06-2016 дата публикации

ELECTROMAGNETIC DAMPER

Номер: US20160159185A1
Автор: Kato Takafumi
Принадлежит: HONDA MOTOR CO., LTD.

An electromagnetic damper includes a torque detection unit that detects a torsional torque of an output shaft of an electric motor or a torsional torque of a transmission shaft, which transmits an external vibration to the electric motor, and a control device that controls the electric motor. The control device controls the electric motor so as to cancel the torsional torque detected by the torque detection unit. 1. An electromagnetic damper comprising:an electric motor having an output shaft to generate an damping force;a transmission member provided with the electromagnetic damper to which an external vibration force is input, the transmission member being connected to the output shaft and configured to transmit the external vibration force to the output shaft of the electric motor so as to damp the external vibration force by the damping force;a torque detector configured to detect a torsional torque of at least one of the output shaft of the electric motor and the transmission member; anda control device that controls the electric motor in a manner that cancels the torsional torque detected by the torque detector, in accordance with the detected torsional torque.2. The electromagnetic damper according to claim 1 ,wherein the transmission member is a threaded shaft provided with a nut screwed onto the threaded shaft, the nut receiving the external vibration force, thereby moving with respect to the threaded shaft in an axial direction thereof in a manner that converts the linear motion of the nut into rotation of the threaded shaft which rotates the output shaft of the electric motor.3. The electromagnetic damper according to claim 1 ,wherein the transmission member receives the external vibration force, thereby moving in its axial direction, and wherein the transmission member has a rack gear formed thereon along the axial direction, and the output shaft of the electric motor has a pinion gear, the rack gear and the pinion gear engaging each other in a manner ...

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Номер записи: 53
09-06-2016 дата публикации

SYSTEM AND METHOD FOR ESTIMATING DAMPER TEMPERATURE

Номер: US20160159188A1
Автор: Mohamed Ahmed, NORTON Russ Lee
Принадлежит: FORD GLOBAL TECHNOLOGIES, LLC

Systems and methods for controlling a damper force based on temperature are disclosed. Signals associated with a damping force value of one or more dampers are received at a controller. The signals are received, at the controller, from at least one suspension height sensor, at least one vehicle velocity sensor, at least one ambient temperature sensor, and at least one engine coolant sensor. A damper temperature is estimated, at the controller, and a damping force of the damper is adjusted to a nominal force based on the estimated damper temperature. 1. A vehicle damper monitoring system for controlling damper force based on temperature , comprising:at least one suspension height sensor, at least one vehicle velocity sensor, at least one ambient temperature sensor, and at least one engine coolant sensor; and receive signals from each of the sensors, wherein the received signals are associated with an actual damping force value of one or more dampers;', 'compare the actual damping force value of the one or more dampers to a predetermined value range and calculate an estimated damper temperature value; and', "when the actual damping force does not fall within the predetermined value range, send a signal to compensate a damping force of one or more of the dampers associated with the vehicle's suspension system, the damping force being compensated by varying orifices of the one or more dampers to allow for more or less damping."], 'at least one controller configured to2. The system of claim 1 , wherein the controller is further configured to determine an initial damper temperature value and store a most recently calculated damper temperature value in a non-volatile memory.3. The system of claim 2 , wherein the initial damper temperature value is between an ambient temperature value received at the controller from the ambient temperature sensor and a temperature value recorded during a most recent key ignition cycle.4. The system of claim 1 , wherein the estimated damper ...

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Номер записи: 54
28-08-2014 дата публикации

MITIGATION OF DOWNHOLE COMPONENT VIBRATION USING ELECTROMAGNETIC VIBRATION REDUCTION

Номер: US20140238662A1
Автор: Prieto Carlos A.
Принадлежит: BAKER HUGHES INCORPORATED

An apparatus for reducing vibration in a downhole component includes: an electrically conductive auxiliary mass attached to the component and configured to vibrate in a direction corresponding to a direction of downhole component vibration and absorb a portion of the downhole component vibration; and a magnetic component configured to generate a magnetic field through the auxiliary mass having a direction at least partially perpendicular to the direction of auxiliary mass vibration, the magnetic field configured to induce a current in the auxiliary mass in response to auxiliary mass vibration. The apparatus has an auxiliary mass vibration frequency tuned relative to a selected natural vibration frequency of the downhole component to reduce vibration of the downhole component, the auxiliary mass vibration frequency based on a magnetic stiffness of the auxiliary mass, the magnetic stiffness based on a strength of the magnetic field and/or a resistance of the auxiliary mass. 1. An apparatus for reducing vibration in a downhole component , comprising:an electrically conductive auxiliary mass attached to the downhole component and configured to vibrate in a direction corresponding to a direction of downhole component vibration and absorb a portion of the downhole component vibration; anda magnetic component configured to generate a magnetic field through the auxiliary mass having a direction at least partially perpendicular to the direction of auxiliary mass vibration, the magnetic field configured to induce a current in the auxiliary mass in response to the auxiliary mass vibration;the apparatus having an auxiliary mass vibration frequency tuned relative to a selected natural vibration frequency of the downhole component to reduce vibration of the downhole component, the auxiliary mass vibration frequency based on a magnetic stiffness of the auxiliary mass, the magnetic stiffness based on at least a strength of the magnetic field and a resistance of the auxiliary mass.2 ...

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Номер записи: 55
07-06-2018 дата публикации

COMPACT VIBRATION REDUCING HUMAN SUPPORT

Номер: US20180156306A1
Автор: CHEN Yong Eric, FEREIDOONI Amin, WICKRAMASINGHE Viresh
Принадлежит: NATIONAL RESEARCH COUNCIL OF CANADA

A vibration reduction (VR) human support has exactly two paths to ground in each degree of VR: one provided by respective displacement actuators (DAs) for active VR, the other by one or more elastomeric damping bodies (EDBs). These paths extend from a frame for carrying a support structure for a live human, to a grounding for fixing the VR system in a vibrating environment. Each EDB is composed of a material having a dynamic Young's Modulus of 0.1-2.5 MPa, and a resilience test rebound height less than 40, and is positioned between the grounding and frame to provide elastic restorative forces and damping in each of the respective directions. The use of EDBs simplifies construction, and allows for a more compact arrangement, without reducing VR efficiency. 1. A vibration reduction system VRS with:a grounding for fixing the VRS to a vibrating environment;a frame for carrying a support structure suitable for supporting a live human;a plurality of displacement actuators, each having a stator end, an actuator end, and a displacement extension range in a direction associated with the respective actuator, with each of the actuators having one of the stator end and actuator end affixed to the frame, and the other to the grounding; ["composed of a material having a dynamic Young's Modulus of 0.1-2.5 MPa, and a resilience test rebound height less than 40, and", 'positioned between the grounding and frame to provide elastic restorative forces and damping in each of the respective directions along an axis of the EDB; and, 'one or more elastomeric damping bodies (EDBs)'}no other path to couple the ground to the frame in any of the respective directions under normal operating conditions of the VRS.2. The VRS of where the grounding comprises a bracket for retaining a casing of at least one of the actuators claim 1 , wherein the bracket:surrounds at least one of the plurality of actuators;composed of an assembly of separate parts;is adjustable for a size, weight or feature of the ...

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Номер записи: 56
04-09-2014 дата публикации

ACTIVE VIBRATION ISOLATING SUPPORT APPARATUS

Номер: US20140249733A1
Автор: FUEKI Shungo, ISHIGURO Tetsuya, Nemoto Hirotomi
Принадлежит: HONDA MOTOR CO., LTD.

An active vibration isolating support apparatus reduces vibration transmitted from a reciprocating engine. The apparatus supports the engine via vibration isolating support units each of which includes an actuator. The vibration isolating units are disposed on opposite sides of a crankshaft of the engine. The apparatus includes a control unit to make the actuator extend and contract periodically depending on a vibrational state of the engine so as to reduce the transmission of engine vibrations to a vehicle body. The control unit drives the actuator of one of the vibration isolating support units to contract, the one of the vibration isolating support units being compressed by roll vibration associated with an initial explosion after a time when the engine starts, so as to reduce transmission of roll vibration in a direction which is reverse to the rotation direction of the crankshaft. 1. In an active vibration isolating support apparatus for reducing vibration transmitted from an engine , wherein the engine in which a reciprocating motion of a piston is converted to a rotary motion of a crankshaft is supported via vibration isolating support units in a vehicle body each of which comprises an actuator , the active vibration isolating support apparatus comprising:a control unit to make the actuator to extend and contract periodically depending on a vibrational state of the engine, thereby reducing transmission of vibration of the engine to a vehicle body,wherein the vibration isolating support units are disposed on opposite sides of the crankshaft, andwherein the control unit drives the actuator of one of the vibration isolating support units to contract, the one of the vibration isolating support units is compressed by roll vibration associated with an initial explosion, so as to reduce transmission of roll vibration of the engine in a direction which is reverse to the rotation direction of the crankshaft of the engine if the initial explosion is determined to be ...

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Номер записи: 57
21-05-2020 дата публикации

Aircraft seat assembly including a vibration mitigating apparatus and method for fabricating the same

Номер: US20200156795A1
Автор: Michael Knight
Принадлежит: Gulfstream Aerospace Corp

An aircraft seat assembly for supporting a seat occupant, and a method for fabricating an aircraft seat assembly for supporting a seat occupant are provided. In one non-limiting example, the aircraft seat assembly includes a seat structure and a seat cushion that is supported by the seat structure. A vibration mitigating apparatus is operatively coupled to the seat structure to prevent or reduce vibrations from transferring to the seat occupant.

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Номер записи: 58
01-07-2021 дата публикации

Torque transfer device having a control system for determining the direction of rotation of the rotor

Номер: US20210199174A1
Автор: JOHANNES Herrmann
Принадлежит: Schaeffler Technologies AG and Co KG

A torque transfer device is provided, for a powertrain of a motor vehicle, comprising an electric motor having a stator and a rotor rotatable relative thereto. A control system is provided which can output a current pulse to the electric motor, wherein the current pulse effects a rotary motion of the rotor in a first direction of rotation and through a first angle of rotation and thus effects an induced voltage, which is received by the control system to determine the direction of rotation or the rotary position of the rotor in relation to the stator. The rotor is connected to a torsional vibration damper comprising a damper input and a damper output; rotatable in a limited manner in relation to the damper input, against the effect of energy storage elements, and the rotary motion of the rotor causes a relative rotation between the damper input and the damper output.

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Номер записи: 59
06-06-2019 дата публикации

VOICE COIL ACTUATOR AND SENSING DRIVER MODULE

Номер: US20190170208A1
Автор: LIU Yun-Hui
Принадлежит:

A voice coil actuator and a sensing driver module are provided. A cover body of the voice coil actuator is connected with a body base to form receiving space. A magnetic element is arranged in the receiving space. A rotor assembly has a rotor, a first elastic element and a pressing element. the rotor is arranged opposite to the magnetic element and has a hole and a first side, the pressing element is arranged in the hole, a first end of the pressing element is curved and protrudes beyond the hole, the first elastic element is arranged on the first side, a third end of the first elastic element abuts against the magnetic element, and a fourth end is located in the hole and abuts against a second end of the pressing element. A coil is connected with the rotor. 1. A voice coil actuator , including:a body base;a cover body, connected to the body base to form a receiving space;a magnetic element, arranged within the receiving space;a rotor assembly, arranged within the receiving space, having a rotor, a first elastic member and a pressing element, the rotor being arranged opposite to the magnetic element and having a hole and a first side, the pressing element being arranged in the hole and having a first end and a second end which is opposite to the first end, the first end being curved and protruding beyond the hole, the first elastic element being arranged on the first side and having a third end and a fourth end which is opposite to the third end, the third end abutting against the magnetic element, the fourth end being located within the hole and abutting against the second end; anda coil, annularly arranged around a circumference of the magnetic element and connected to the rotor.2. The voice coil actuator of claim 1 , further including:a yoke, arranged within the receiving space and annularly arranged around the circumference of the magnetic element, the coil being located between the magnetic element and the yoke; anda positioning frame, connected to the cover ...

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Номер записи: 60
28-05-2020 дата публикации

Vibration Application Mechanism And Vibration Control Method

Номер: US20200166099A1
Автор: Ikehara Masayuki
Принадлежит:

A vibration application mechanism including a vibratable part, a load sensor to sense a load applied to the vibratable part, a vibration generator to vibrate the vibratable part, and a controller. The controller makes a first determination as to whether a load sensed by the load sensor has equaled or exceeded a first threshold value; if the first determination is such that the sensed load has equaled or exceeded the first threshold value, the controller drives the vibration generator and makes a second determination, during a predetermined period, as to whether a load sensed by the load sensor has fallen below a second threshold value, wherein the period starts when the sensed load has equaled or exceeded the first threshold value; and if the second determination is such that the sensed load has fallen below the second threshold value during the period, the controller does not drive the vibration generator. 1. A vibration application mechanism comprising:a vibratable part;a load sensor to sense a load applied to the vibratable part;a vibration generator to vibrate the vibratable part; anda vibration controller configured such that the vibration controller makes a first determination as to whether or not a load sensed by the load sensor has equaled or exceeded a first threshold value,if the vibration controller determines, as a result of the first determination, that the load sensed by the load sensor has equaled or exceeded the first threshold value, then the vibration controller drives the vibration generator and makes a second determination, during a predetermined first period, as to whether or not a load sensed by the load sensor has fallen below a second threshold value, wherein the first period starts when the load sensed by the load sensor has equaled or exceeded the first threshold value, andif the vibration controller determines, as a result of the second determination, that the load sensed by the load sensor has fallen below the second threshold value ...

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Номер записи: 61
08-07-2021 дата публикации

Damper and damper monitoring method

Номер: US20210207677A1
Автор: Hideo Hotomi, Takashi Shimonishi
Принадлежит: Simotec Co Ltd

A damper is provided which can more reliably prevent malfunction and breakdown and which enables efficiently performing repair and inspection operations. This damper, provided with a casing linked to a first object and a rotating part linked to a second object rotatably attached to the first object, damps rotation in either the direction closing or the direction opening the second object, and is provided with a sensor which detects prescribed change in the external environment in the damper or around the damper, and a control unit which externally communicates, over a communication network, information relating to the change in the external environment detected by the sensor, wherein the sensor is configured from at least one of: a rotation sensor for detecting the number of revolutions of the rotating part; a sound sensor for detecting sound during rotations of the rotating part; a temperature sensor for detecting temperature; and a torque sensor for detecting torque on the basis of friction during rotation of the rotating part.

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Номер записи: 62
08-07-2021 дата публикации

LOCKING ISOLATOR AND METHOD OF ISOLATING A SYSTEM

Номер: US20210207681A1
Автор: Munger Cary D., Pothier Jared R., Smith Nicholas Samuel Lee
Принадлежит: The Boeing Company

A locking isolator includes one or more joints. The one or more joints are configured to transition between a clearance fit state and an interference fit state in response to a change in temperature. The locking isolator includes a dampener. The dampener is configured to attenuate transmission of vibration through the one or more joints when the one or more joints are in the clearance fit state. 1. A locking isolator , comprising:one or more joints configured to transition between a clearance fit state and an interference fit state in response to a change in temperature; anda dampener, configured to attenuate transmission of vibration through the one or more joints when the one or more joints are in the clearance fit state.2. The locking isolator of claim 1 , wherein each joint of the one or more joints comprises:a first portion, having a first coefficient of thermal expansion; anda second portion, having a second coefficient of thermal expansion that is different than the first coefficient of thermal expansion.3. The locking isolator of claim 2 , wherein:the first portion and the second portion are fixed relative to each other below a transition temperature; andthe first portion and the second portion are movable relative to each other above the transition temperature.4. The locking isolator of claim 2 , wherein:the first portion and the second portion are movable relative to each other below a transition temperature; andthe first portion and the second portion are fixed relative to each other above the transition temperature.58-. (canceled)9. The locking isolator of claim 1 , further comprising a heating element claim 1 , wherein the heating element is configured to heat the one or more joints.10. The locking isolator of claim 9 , further comprising a piezoelectric generator claim 9 , configured to generate an electric power in response to a mechanical strain claim 9 , and wherein:the piezoelectric generator is in electrical communication with the heating element; ...

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Номер записи: 63
13-06-2019 дата публикации

Systems and Methods for Dampening Dynamic Loading

Номер: US20190178325A1
Автор: Aston Richard W., Griffin Steven F., Langmack Michael John, MARTINEZ Jazzmin P., Shurilla Christopher R.
Принадлежит:

Systems and methods for dampening dynamic loading between two bodies are described. An example dampening system includes a non-ferrous metal body attached to a second body and a stack of magnets attached to a third body. The stack of magnets is movably disposed within or around the non-ferrous metal body, and adjacent magnets are arranged in an opposed polar relationship, whereby relative movement of said second and third bodies is damped. An example method of dampening dynamic loading includes arranging a plurality of magnets along an axis to form at least one pair of magnets having an opposed polar relationship along the axis. The method further includes axially moving the at least one pair of magnets relative to a non-ferrous metal body, so as to dampen dynamic loading of a payload attached to a vehicle. 1. A dampening system comprising:a non-ferrous metal body attached to a second body;a flexible porous material; anda stack of magnets attached to a third body, wherein the stack of magnets is movably disposed within or around the non-ferrous metal body, wherein the flexible porous material is disposed between the stack of magnets and the non-ferrous metal body, and wherein adjacent magnets are arranged in an opposed polar relationship, whereby relative movement of said second and third bodies is damped.2. The dampening system of claim 1 , wherein the non-ferrous metal body radially surrounds the stack of magnets.3. The dampening system of claim 2 , wherein the non-ferrous metal body comprises a copper tube or aluminum tube surrounding the stack of magnets.4. The dampening system of claim 1 , wherein the stack of magnets radially surrounds the non-ferrous metal body.5. The dampening system of claim 1 , further comprising:a spring coupled to the stack of magnets and the non-ferrous metal body, wherein the spring radially surrounds the stack of magnets and the non-ferrous metal body.6. The dampening system of claim 5 , wherein the stack of magnets is connected to a ...

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Номер записи: 64
15-07-2021 дата публикации

TORSIONAL ACTUATOR

Номер: US20210215242A1
Автор: Schmidt Sebastian, Vath Andreas, Wuerr Michael
Принадлежит:

A transmission designed to transmit a torque flow from a driving device to a driven device. The transmission includes an actuator including a rotor and a stator. The transmission further includes an output or an input shaft. The rotor is connected non-rotatably to the output shaft or to the input shaft, and the actuator and the driven device are arranged at different ends of the output shaft or the input shaft. The actuator is different from the driving device and the driven device. 18-. (canceled)9. A transmission designed to transmit a torque flow from a driving device to a driven device , the transmission comprising:an actuator, the actuator including a rotor and a stator; andan output shaft,wherein the rotor is connected non-rotatably to the output shaft,wherein the actuator and the driven device are arranged at different ends of the output shaft, andwherein the actuator is different from the driving device and the driven device.10. A transmission designed to transmit a torque flow from a driving device to a driven device , the transmission comprising:an actuator, the actuator including a rotor and a stator; andan input shaft,wherein the rotor is connected non-rotatably to the input shaft;wherein the actuator and the driving device are arranged at different ends of the input shaft, andwherein the actuator is different from the driving device and the driven device.11. The transmission according to claim 9 , wherein the output shaft forms the rotor.12. The transmission according to claim 9 , further comprising:a transmission housing,wherein the actuator is arranged at least partially within the transmission housing.13. The transmission according to claim 9 , further comprising:at least one sensor;wherein the at least one sensor is configured to measure vibrations of the output shaft.14. An arrangement comprising a transmission according to claim 13 , the arrangement further comprising:at least one control unit,wherein the at least one sensor is connected to the at ...

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Номер записи: 65
05-07-2018 дата публикации

USER INTERFACE FOR VARIABLE ACTIVE SEAT TRACKING

Номер: US20180186209A1
Автор: JR. James A., Parison, Selden Brian Alexander
Принадлежит: ClearMotion Acquisition I LLC

An active suspension system that interfaces a sprung mass and an unsprung mass is disclosed. The active suspension system includes a suspension comprising one or more actuators capable of exerting a force on the sprung mass to at least partially isolate motion of the sprung mass from motion of the unsprung mass. A user interface allows a user to indicate a desired degree of motion isolation. 1. An active suspension system that interfaces a sprung mass and an unsprung mass , the active suspension system comprising:a suspension comprising one or more actuators capable of exerting a force on the sprung mass to at least partially isolate motion of the sprung mass from motion of the unsprung mass; anda user interface that allows a user to indicate a desired degree of motion isolation.2. The active suspension system of wherein the suspension further comprises a bias force eliminator.3. The active suspension system of wherein the bias force eliminator comprises a dynamically-adjustable low stiffness spring element.4. The active suspension system of wherein the sprung mass comprises a seat of a motor vehicle and the unsprung mass comprises a floor of the motor vehicle.5. The active suspension system of claim 1 , wherein the active suspension system is configured to provide vibration isolation of the sprung mass over an operating frequency range;wherein the suspension includes a controller that is configured to, in response to operation of the user interface, change one or more control algorithm constants, thereby causing a frequency dependent change over the operating frequency range in vibration isolation of the sprung mass;wherein the frequency dependent change in vibration isolation is larger in a lower frequency portion of the operating frequency range than it is in a higher frequency portion of the operating frequency range.6. The active suspension system of wherein the lower frequency portion of the operating frequency range comprises frequencies of no more than about ...

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Номер записи: 66
16-07-2015 дата публикации

ELECTROMAGNETIC ACTUATOR, AND ACTIVE VIBRATION DAMPER AND FLUID-FILLED ACTIVE VIBRATION DAMPING DEVICE USING THE SAME

Номер: US20150198215A1
Автор: Hashimoto Yuji, KOYAMA Hironori, NAGASAWA Masahiko
Принадлежит:

An electromagnetic actuator including: a stator; a mover attached displaceable in relation to the stator; a plurality of plate springs elastically coupling the stator and the mover; and a coil member attached to one of the stator and the mover. Each of the plate springs includes an outer circumference attachment part and a center attachment part respectively attached to one and another of the stator and the mover. A plurality of spiral-shaped connection arm parts are provided at equal intervals in a circumferential direction radially between the outer circumference attachment part and the center attachment part so as to extend in a radial direction while being inclined in the circumferential direction. The plate springs overlap in a thickness direction and all of the plate springs are mutually formed with a same material and in a same shape. 1. An electromagnetic actuator comprising:a stator;a mover attached displaceable in relation to the stator;a plurality of plate springs elastically coupling the stator and the mover; anda coil member attached to one of the stator and the mover, the coil member being energized to generate a magnetic field that exerts a force on the mover to drive the mover in relation to the stator, whereineach of the plate springs includes an outer circumference attachment part and a center attachment part respectively attached to one and another of the stator and the mover,a plurality of spiral-shaped connection arm parts are provided at equal intervals in a circumferential direction between the outer circumference attachment part and the center attachment part in a radial direction so as to extend in the radial direction while being inclined in the circumferential direction, andthe plate springs overlap in a thickness direction and all of the plate springs are mutually formed with a same material and in a same shape.2. The electromagnetic actuator according to claim 1 , wherein the plate springs are matched to mutually a same position in the ...

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Номер записи: 67
16-07-2015 дата публикации

ELECTROMAGNETIC ACTUATOR, AND ACTIVE VIBRATION DAMPER AND FLUID-FILLED ACTIVE VIBRATION DAMPING DEVICE USING THE SAME

Номер: US20150198216A1
Автор: Hashimoto Yuji, KOYAMA Hironori, NAGASAWA Masahiko
Принадлежит:

An electromagnetic actuator including a plate spring elastically coupling a stator and a mover. The plate spring includes an outer circumference attachment part and a center attachment part respectively attached to one and another of the stator and the mover. A plurality of spiral-shaped connection arm parts are provided at equal intervals in a circumferential direction radially between the outer circumference attachment part and the center attachment part. A direction recognizer is provided such that an orientation of the plate spring in the circumferential direction is recognizable from outside. The direction recognizer arranges the plate spring such that connection sites of the connection arm parts to the center attachment part and the outer circumference attachment part are circumferentially separated from at least one of input directions of a main load and a maximum load in a radial direction. 1. An electromagnetic actuator comprising:a stator;a mover attached displaceable in relation to the stator;a plate spring elastically coupling the stator and the mover; anda coil member attached to one of the stator and the mover, the coil member being energized to generate a magnetic field that exerts a force on the mover to drive the mover in relation to the stator, whereinthe plate spring includes an outer circumference attachment part and a center attachment part respectively attached to one and another of the stator and the mover,a plurality of spiral-shaped connection arm parts are provided at equal intervals in a circumferential direction between the outer circumference attachment part and the center attachment part in a radial direction so as to extend in the radial direction while being inclined in the circumferential direction, anda direction recognizer is provided such that an orientation of the plate spring in the circumferential direction is recognizable from outside, and the direction recognizer arranges the plate spring such that connection sites of the ...

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Номер записи: 68
23-07-2015 дата публикации

Negative stiffness hydraulic system

Номер: US20150204413A1
Автор: Christopher B. CHURCHILL, Geoffrey P. Mcknight, Guillermo A. Herrera, Jacob J. MIKULSKY
Принадлежит: HRL LABORATORIES LLC

A variable stiffness structure configured to support a variable load, the variable stiffness structure including a positive stiffness element coupled to the variable load, a negative stiffness element, a hydraulic system coupled to the positive and negative stiffness elements and configured to adjust a relative position of the positive and negative stiffness elements in response to a change in the variable load, while the variable stiffness structure supports the variable load.

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Номер записи: 69
20-07-2017 дата публикации

MAGNETO-RHEOLOGIC DAMPER FOR ELECTROMECHANICAL ACTUATOR

Номер: US20170204934A1
Автор: Himmelmann Richard A.
Принадлежит:

A thrust vector control actuator is provided including a ram first portion, a ram second portion, the ram second portion housed within the ram first portion and defining a damper cavity between the ram first portion and the ram second portion and the ram second portion configured to operably connect to an output link, and a magneto-rheologic fluid located within the damper cavity, the magneto-rheologic fluid configured to rigidly connect the ram first portion and the ram second portion in a first state, the magneto-rheologic fluid being solid in the first state, and a second state wherein the ram second portion is moveable relative to the ram first portion and the magneto-rheologic fluid is at least partially liquefied. 1. A thrust vector control actuator comprising:a ram first portion;a ram second portion, the ram second portion housed within the ram first portion and defining a damper cavity between the ram first portion and the ram second portion and the ram second portion configured to operably connect to an output link; anda magneto-rheologic fluid located within the damper cavity, the magneto-rheologic fluid configured to rigidly connect the ram first portion and the ram second portion in a first state, the magneto-rheologic fluid being solid in the first state, and a second state wherein the ram second portion is moveable relative to the ram first portion and the magneto-rheologic fluid is at least partially liquefied.2. The thrust vector control actuator of claim 1 , further comprising a housing configured to house the ram first portion and the ram second portion.3. The thrust vector control actuator of claim 1 , further comprising a magnetic field generator controllable to apply a magnetic field to the magneto-rheologic fluid.4. The thrust vector control actuator of claim 1 , further comprising:an output link operably connected to the ram second portion; anda load sensor operably connected to the output link, the load sensor configured to detect a transient ...

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Номер записи: 70
16-10-2014 дата публикации

Surface Vibration Using Compliant Mechanical Amplifier

Номер: US20140306576A1
Автор: Ervin Gregory F., Ervin James D., Hetrick Joel A., Kota Sridhar, Maric Dragan
Принадлежит: FLEXSYS, INC.

A displacement amplifier receives an actuation displacement signal from a piezoelectric actuator. The displacement signal is amplified by one or more stages of compliant elements, and a corresponding force is applied to a load. Wide frequency response is achieved in response to the resilience characteristics of the compliant elements that are formed from any of several materials, illustratively aluminum, steel, titanium, plastics, composites, etc., and are produced by any of several manufacturing techniques, illustratively extrusion, die casting, forging, etc. The compliant elements can be configured as plural compliant mechanical displacement amplifier stages. In bilateral arrangements displacement signals from distal ends of the motive source are applied to symmetrical, or mirror image, arrangements of compliant elements. The motive source, which may be a piezoelectric actuator, delivers its displacement signal at one end thereof to one or more compliant elements. The other end of the piezoelectric actuator can be grounded. 1. A motion transducer , comprising:a base member, said base member having a longitudinal axis;a first compliant transducer arrangement installed on said base member, said first compliant transducer arrangement having an input for receiving a first vibratory input displacement directed substantially parallel to the longitudinal axis of said base member and an output for producing a first vibratory output force directed at a predetermined angle with respect to the longitudinal axis of said base member; anda vibratory actuator element having a first output portion coupled to the input of said first compliant transducer arrangement for producing the first vibratory input displacement.242. The motion transducer of claim , wherein there is further provided a second compliant transducer arrangement installed on said base member , said second compliant transducer arrangement having an input for receiving a second vibratory input displacement and an ...

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Номер записи: 71
04-08-2016 дата публикации

APPARATUS FOR DAMPING MACHINING VIBRATION OF AN OBJECT

Номер: US20160223049A1
Автор: YAO Shaoming
Принадлежит: ROLLS-ROYCE PLC

Apparatus for damping machining vibration of an object, the apparatus including: a plurality of rigid members to be positioned around the object to be machined, the plurality of rigid members defining an interior surface and an exterior surface; at least one flexible member positioned adjacent the interior surface of the plurality of rigid members, the at least one flexible member for contacting an exterior surface of the component; and a compressor to be positioned around the plurality of rigid members and the at least one flexible member, the compressor being arranged to compress the at least one flexible member onto an exterior surface of the object. 1. Apparatus for damping machining vibration of an object , the apparatus comprising:a plurality of rigid members to be positioned around the object to be machined, the plurality of rigid members defining an interior surface and an exterior surface;at least one flexible member positioned adjacent the interior surface of the plurality of rigid members, the at least one flexible member for contacting an exterior surface of the object; anda compressor to be positioned around the plurality of rigid members and the at least one flexible member, the compressor being arranged to compress the at least one flexible member onto an exterior surface of the object.2. Apparatus as claimed in claim 1 , wherein the at least one flexible member comprises a resilient material.3. Apparatus as claimed in claim 1 , wherein the plurality of rigid members and the at least one flexible member define a circular cross sectional shape.4. Apparatus as claimed in claim 1 , wherein the plurality of rigid members and the at least one flexible member define an elliptical cross sectional shape.5. Apparatus as claimed in claim 1 , wherein the plurality of rigid members and the at least one flexible member define a cylindrical shape.6. Apparatus as claimed in claim 1 , wherein the plurality of rigid members and the at least one flexible member define ...

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Номер записи: 72
03-08-2017 дата публикации

CHARACTERISTIC VALUE VARIABLE DYNAMIC VIBRATION ABSORBER AND CHARACTERISTIC VALUE VARIABLE VIBRATION ISOLATOR

Номер: US20170219039A1
Автор: INOUE Toshio
Принадлежит: HONDA MOTOR CO., LTD.

To solve a problem, for example, in which holding a movable mass becomes difficult because the spring characteristics of a rubber constituting a basis are set low in order to set the characteristic value at a low value. In a first dynamic vibration absorber including a movable mass that is coupled to a vibration damping target member via an MRE as a first elastic member having elastic characteristics variable with a magnetic field, and being capable of varying a vibration characteristic value of the movable mass by controlling the magnetic field, the dynamic vibration absorber has a second elastic member different from the MRE, and the vibration damping target member and the movable mass are elastically-coupled to each other via the second elastic member. 1. A characteristic value variable dynamic vibration absorber comprising:a vibration damping target member that vibrates;a magneto-rheological elastomer as a first elastic member having an elastic characteristic variable corresponding to a magnetic field;a movable mass that is elastically-coupled to said vibration damping target member via the magneto-rheological elastomer, the dynamic vibration absorber varying a vibration characteristic value of said movable mass by controlling said magnetic field, whereinsaid dynamic vibration absorber further comprises a second elastic member different from said magneto-rheological elastomer, andsaid vibration damping target member and said movable mass are elastically-coupled to each other via said second elastic member.2. The characteristic value variable dynamic vibration absorber according to claim 1 , whereinsaid second elastic member is made by a plate spring made of a magnetic substance material,said movable mass forms a closed magnetic path together with said first elastic member and said second elastic member, andsaid dynamic vibration absorber varies said vibration characteristic value of said movable mass by controlling said magnetic field in accordance with ...

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Номер записи: 73
12-08-2021 дата публикации

Magnetic Suspension Type Quasi-Zero Stiffness Electromagnetic Vibration Isolator with Active Negative Stiffness

Номер: US20210246964A1
Автор: Guoyong Jin, Junjie Yuan, Tiangui Ye, Zhigang Liu
Принадлежит: Harbin Engineering University

The disclosure provides a magnetic suspension type quasi-zero stiffness electromagnetic vibration isolator with active negative stiffness. The disclosure relates to the technical field of vibration control. The disclosure can selectively realize passive negative stiffness and active negative stiffness by adjusting the control mode of a controller. By adopting an amplifying mechanism and DIESOLE type electromagnets, the bearing capacity of the vibration isolator is further increased, and the disclosure is suitable for the field of ultra-low frequency heavy load vibration reduction and isolation. The displacement state of a negative stiffness mechanism can be measured in real time according to a sensor, and by means of cooperation of the controller and a driver, active negative stiffness is realized, real-time linear negative stiffness is realized, the multi-stable phenomenon is avoided, and complex dynamic phenomena such as jumping during working of the vibration isolator are prevented. The active negative stiffness is realized, the current passing through the system can be adjusted according to different working conditions, and the system has strong self-adaptive ability, can be applied to vibration-isolated objects of different quality, and can adapt to different working environments.

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Номер записи: 74
16-07-2020 дата публикации

ACTIVE INERTIAL DAMPER SYSTEM AND METHOD

Номер: US20200224743A1
Автор: Bakker Bernhard Michael, Bank Servaas Louis, De Smit Joannes Theodoor, Rijkers Ronald Gerardus Jozef
Принадлежит:

An active inertial damper system () and method for damping vibrations (V,V) in a structure (). An inertial mass () is supported by a support frame () via spring means () to form a mass-spring system () having a resonance frequency (fn). A controller () is configured to control a force actuator () to adapt the driving force (Fd) as a function of measured vibrations (V,V). The controller () comprises a filter (H) determining a magnitude (M) of the driving force (Fd) as a function of frequency (f) for the measured vibrations (V,V) in the structure (). The filter (H) is configured to provide an anti-resonance dip in the magnitude (M) of the driving force (Fd) at the resonance frequency (fn) of the mass-spring system () to suppress resonant behaviour of the mass-spring system () itself. 1. An active inertial damper system for damping vibrations in a structure , the system comprisinga support frame configured for attachment to the structure to be damped;an inertial mass supported by the support frame via spring means to form a mass-spring system having a resonance frequency;a force actuator configured to apply a variable driving force between the inertial mass and the support frame;a vibration sensor configured to measure vibrations in the structure to be damped; anda controller configured to control the force actuator to adapt the variable driving force as a function of the measured vibrations, wherein the controller comprises a filter determining a magnitude of the variable driving force as a function of frequency for suppressing the measured vibrations in the structure, wherein the filter is further configured to provide an anti-resonance dip in the magnitude of the variable driving force at the resonance frequency of the mass-spring system to suppress resonant behaviour of the mass-spring system itself.2. The system according to claim 1 , wherein the filter is configured to provide one or more resonance peaks in the magnitude of the variable driving force at one or ...

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Номер записи: 75
25-07-2019 дата публикации

Electronic device

Номер: US20190230423A1
Автор: Ge Huan, Guo Shun, Wang Hongxing
Принадлежит:

An electronic device is provided, including: a vibration plate; a frame structure supporting the vibration plate, the frame structure including an installation portion parallel to and opposite to the vibration plate and a border bent at an edge of the installation portion and extending along both sides of the installation portion. The vibration plate is supported on a side of the installation portion, and a preset gap is provided between the vibration plate and the border. The electronic device further includes a middle frame fixed between the installation portion and the vibration plate. The middle frame is fixedly connected to the vibration plate, an actuator is fixed to the middle frame and drives the middle frame so that the middle frame drives the vibration plate to vibrate and sound. The electronic device further includes a damper sandwiched between the middle frame and the installation portion. 1. An electronic device , comprising ,a vibration plate; anda frame structure supporting the vibration plate, wherein the frame structure comprises: an installation portion parallel to and opposite to the vibration plate; a border bent at an edge of the installation portion and extending along both sides of the installation portion, the vibration plate being supported on a side of the installation portion, and a preset gap being provided between the vibration plate and the border; and a middle frame fixed between the installation portion and the vibration plate, the middle frame being fixedly connected to the vibration plate, and an actuator being fixed to the middle frame and configured to drive the middle frame in such a manner that the middle frame drives the vibration plate to vibrate and sound; anda damper sandwiched between the middle frame and the installation portion.2. The electronic device according to claim 1 , wherein the middle frame comprises a mainboard disposed oppositely to the vibration plate and a supporting plate extending from an edge of the ...

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Номер записи: 76
24-08-2017 дата публикации

ENGINE BALANCE ASSEMBLY USING ELECTRIC MOTORS

Номер: US20170241510A1
Автор: Caine Jon Edward, Gregory Jonathan, Haeuser Viktor, Rogers Ivan Mark, Scoging Neill
Принадлежит:

A balance assembly for an engine is provided. The balance assembly includes a first electric motor coupled to the engine and configured to rotate a first eccentric mass relative to the engine, the first eccentric mass being coupled to a first shaft of the first electric motor, and a second electric motor coupled to the engine and configured to rotate a second eccentric mass relative to the engine, the second eccentric mass being coupled to a second shaft of the second electric motor. The first and second electric motors are configured to rotate the first and second eccentric masses in order to balance a vibration characteristic of the engine. 1. A balance assembly for an engine , comprising:a first electric motor coupled to the engine and configured to rotate a first eccentric mass relative to the engine, the first eccentric mass being coupled to a first shaft of the first electric motor; anda second electric motor coupled to the engine and configured to rotate a second eccentric mass relative to the engine, the second eccentric mass being coupled to a second shaft of the second electric motor;wherein the first and second electric motors are configured to rotate the first and second eccentric masses in order to balance a vibration characteristic of the engine; andwherein the first and second electric motors are provided on opposite longitudinal ends of the engine to each other.2. The balance assembly according to claim 1 , wherein the first electric motor comprises a first rotary encoder configured to determine a phase angle of the first shaft of the first electric motor and the second electric motor comprises a second rotary encoder configured to determine a phase angle of the second shaft of the second electric motor.3. The balance assembly according to claim 1 , further comprising a controller configured to determine a difference in phase angle of the first and/or second shafts relative to a crank shaft of the engine.4. The balance assembly according to claim 3 , ...

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Номер записи: 77
10-09-2015 дата публикации

METHOD AND APPARATUS FOR NOISE ATTENUATION FOR HVAC&R SYSTEM

Номер: US20150252868A1
Автор: MISALJEVIC Sasa
Принадлежит:

An apparatus for noise attenuation of an HVAC&R system including an enclosure having a first enclosure frame and a chassis insertable inside the enclosure and supported by the first enclosure frame upon insertion inside the enclosure. The chassis includes a first chassis structure securing a self-contained refrigerant loop. The loop maintains a gap from the enclosure upon insertion of the chassis inside the enclosure. A second chassis structure supports the first chassis structure. At least one vibration damping device is positioned beneath the first chassis structure and between the first chassis structure and the second chassis structure. The vibration damping device is supported by the second chassis structure, the second chassis structure is supported by the first enclosure frame. The enclosure is vibrationally isolated from the loop. 1. An apparatus for noise attenuation of an HVAC&R system , comprising:an enclosure having a first enclosure frame; a first chassis structure;', 'a self-contained refrigerant loop secured to the first chassis structure, the loop maintaining a gap from the enclosure upon insertion of the chassis inside the enclosure, the loop comprising a compressor, a first heat exchanger, and a second heat exchanger;', 'a second chassis structure supporting the first chassis structure; and', 'at least one vibration damping device positioned beneath the first chassis structure and between the first chassis structure and the second chassis structure, the vibration damping device supported by the second chassis structure, the second chassis structure supported by the first enclosure frame; and, 'a chassis insertable inside the enclosure and supported by the first enclosure frame upon insertion of the chassis inside the enclosure, the chassis comprisingwherein the enclosure is vibrationally isolated from the refrigerant loop.2. The apparatus of claim 1 , wherein the enclosure comprises an exhaust opening sized such that a noise level associated with ...

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Номер записи: 78
09-09-2021 дата публикации

METHOD FOR DAMPING TORSIONAL VIBRATIONS IN A DRIVE TRAIN, AND DRIVE TRAIN

Номер: US20210277975A1
Автор: Litzba Jörg, SCHÄFER Johannes, Tenckhoff Georg, WOLF Daniel
Принадлежит: ZF FRIEDRICHSHAFEN AG

A torsional moment acting on a component in a drive train of an aircraft may be determined using at least one sensor, where the determined torsional moment is used for adjusting at least one adjustable damping element located in or on the component and/or for regulating a torsional stiffness in the torque-conducting component. As a result, the torsional load in the component may be reduced. 1. A method for damping torsional vibrations in a drive train in aircraft , the method comprising:determining a torsional moment acting on a torque-conducting component of the drive train using at least one sensor;adjusting at least one adjustable damping element located in or on the torque-conducting component of the drive train based on the torsional moment; andregulating a torsional stiffness of the torque-conducting component to reduce the torsional load in the component.2. The method according to claim 1 , wherein the torsional moment is determined using at least one of:a magnetoelastic or magnetoresistant sensor;an angular position sensor; andan acoustic sensor.3. The method according to claim 1 , wherein the torsional moment is determined using a first and second sensor element.4. The method according to claim 1 , wherein the torsional moment is determined using a sensor element located on a drive train component claim 1 , and wherein the sensor element is located on at least one of a transmission claim 1 , a shaft claim 1 , and a bearing.5. The method according to claim 1 , wherein the torsional moment is determined using a sensor element integrated in a drive train component.6. The method according to claim 1 , wherein the determined torsional moment is used for adjusting two adjustable damping elements to reduce the torsional load in the component.7. A drive train in an aircraft claim 1 , comprising: wherein the component includes at least one sensor element, the at least one sensor element being configured to determine a torsional moment acting on the component,', ' ...

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Номер записи: 79
30-08-2018 дата публикации

POWERTRAIN MOUNT SYSTEM

Номер: US20180245661A1
Автор: SYKES MATT, Thompson Tom
Принадлежит:

A powertrain mount system for a vehicle powertrain, the system comprising: an active magnetic bearing configured to support at least a portion of the powertrain relative to a body portion of a vehicle; and a controller configured to determine an operational state of at least one of the powertrain and the vehicle and adjust the operation of the active magnetic bearing depending on the operational state of at least one of the powertrain and the vehicle. 1. A powertrain mount system for a vehicle powertrain , comprising:an active magnetic bearing configured to support at least a portion of the powertrain relative to a body portion of the vehicle; anda controller configured to determine an operational state of at least one of the powertrain and the vehicle and adjust the operation of the active magnetic bearing depending on the operational state of at least one of the powertrain and the vehicle.2. The powertrain mount system according to claim 1 , wherein the controller is configured to adjust a stiffness of the active magnetic bearing in response to dynamic loading of the powertrain.3. The powertrain mount system according to claim 1 , wherein the controller is configured to maintain a stiffness of the active magnetic bearing under steady state loading of the powertrain.4. The powertrain mount system according to claim 1 , wherein the controller is configured to increase a stiffness of the active magnetic bearing in response to an increase in power output of the powertrain.5. The powertrain mount system according to claim 1 , wherein the controller is configured to decrease a stiffness of the active magnetic bearing in response to a decrease in power output of the powertrain.6. The powertrain mount system according to claim 1 , wherein the controller is configured to increase a stiffness of the active magnetic bearing in response to the vehicle performing a maneuver.7. The powertrain mount system according to claim 1 , wherein the controller is configured to adjust a ...

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Номер записи: 80
31-08-2017 дата публикации

CONTROL STRATEGY FOR A VARIABLE SPRING RATE ABSORBER

Номер: US20170248189A1
Автор: Buchanan Mark, KELLER Robert Francis, Liu Xiaobing
Принадлежит:

A variable spring rate absorber is adjusted to provide the vibration attenuation characteristics needed to match current operating conditions. Control of a variable spring rate absorber determines the desired absorber spring rate for existing conditions based on a number of inputs and predetermined characterization tables. Once the spring rate is calculated, a predetermined map may be used to determine the absorber setting needed to achieve the desired spring rate. A sensor may be used to measure the actual state of the absorber to determine the extent to which the setting must be adjusted to achieve the desired spring rate. 1. A method of controlling a variable absorber which has an actuator with a sensor , including reading input signals , determining a desired spring rate for the variable absorber , determining a control setting for the actuator that achieves a commanded spring rate , reading the sensor to acquire an actual setting of the actuator , calculating a control error signal equal to the difference between the control setting and the actual setting , and using the control error signal sending a control signal to the actuator , thereby adjusting the actuator to the control setting.2. A method according to wherein the commanded spring rate is equal to the desired spring rate3. A method according to wherein the desired spring rate is corrected by determining a correction term that is applied to the desired spring rate to produce the commanded spring rate.4. A method according to wherein the correction term is determined by combining a target amplitude and a target phase angle with a calculated amplitude and a calculated phase angle.5. A method according to wherein the correction term is determined from a spectral analysis of the input signals6. A method according to wherein the correction term is determined using a fast fourier transform analysis.7. A method according to wherein the correction term is determined using a least squares method.8. A method ...

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Номер записи: 81
30-08-2018 дата публикации

Passive damping solution to optical image stabilization for voice coil motors

Номер: US20180246342A1
Автор: Aurelien R. Hubert, Douglas S. Brodie, Ryan J. Dunn, Scott W. Miller
Принадлежит: Apple Inc

In some embodiments, an apparatus includes an optics assembly housing an optics component. In some embodiments, the optics assembly is configured to move within the apparatus. In some embodiments, the optics assembly is suspended by a plurality of wires on a base component of the apparatus. In some embodiments, one or more passive dampers disposed around the plurality of wires. In some embodiments, the passive dampers are configured to passively dampen motions of the optics assembly within the apparatus, and each of the one or more passive dampers radially surrounds a portion of a length of a respective one of the plurality of wires over a portion of the length of the respective one of the plurality of wires.

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Номер записи: 82
06-09-2018 дата публикации

METHOD AND DEVICE FOR IDENTIFYING AN ACTION

Номер: US20180252291A1
Автор: Liu Dongxu
Принадлежит:

The present disclosure relates to methods and devices for identifying an action. In some embodiments, a method for identifying an action includes: recording vibration trajectory information, wherein the vibration trajectory information corresponds to vibration of at least a portion of an intelligent device from a start of a vibration event to stabilization of the vibration event; determining whether the vibration is a damping vibration based on the vibration trajectory information; and in response to determining that the vibration is a damping vibration, determining that the vibration is caused by a user's trigger action, or in response to determining that the vibration is not a damping vibration, determining that the vibration is not caused by the user's trigger action. 1. A method for identifying an action , which is used for interactive control of an intelligent device , comprising:recording vibration trajectory information, wherein the vibration trajectory information corresponds to vibration of at least a portion of an intelligent device from a start of a vibration event to stabilization of the vibration event;determining whether the vibration is a damping vibration based on the vibration trajectory information; andin response to determining that the vibration is a damping vibration, determining that the vibration is caused by a user's trigger action, or in response to determining that the vibration is not a damping vibration, determining that the vibration is not caused by the user's trigger action.2. The method according to claim 1 , wherein the determining whether the vibration is a damping vibration based on the vibration trajectory information comprises:determining, based on the vibration trajectory information, position information of n first peaks and n first troughs of the vibration trajectory information in time order, wherein n is a positive integer;determining, based on the position information of the n first peaks and the n first troughs, n first ...

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Номер записи: 83
07-10-2021 дата публикации

Electromagnetic Force Control Method of Magnetic Disk Type Negative Stiffness Electromagnetic Actuator

Номер: US20210310537A1
Автор: Jin Guoyong, Liu Zhigang, Ye Tiangui, YUAN Junjie
Принадлежит:

The present disclosure is an electromagnetic force control method of a magnetic disk type negative stiffness electromagnetic actuator. The present disclosure relates to the technical field of vibration control. According to the actually required static bearing capacity, the present disclosure determines the positive stiffness k of a mechanical spring required for a magnetic disk type quasi-zero stiffness vibration isolator; and establishes an electromagnetic force mathematical model of a single electromagnet under a condition of magnetic unsaturation. The present disclosure aims at the magnetic disk type quasi-zero stiffness vibration isolator and takes the coil current as an input control variable, so that the electromagnetic force and displacement of the negative stiffness electromagnetic actuator have a linear relationship, thereby changing the non-linear nature of a vibration isolation system, avoiding the multi-stable phenomenon caused by the non-linear electromagnetic force during working, and eliminating complex dynamic behaviors such as jumping when the whole vibration isolator works. Complex sensors and control systems are not needed, and implementation manners are simple and convenient. 1. A method of electromagnetic force control of a magnetic disk type negative stiffness electromagnetic actuator , comprising the following steps:step 1: according to a static bearing capacity, selecting a mechanical spring for providing positive stiffness of a vibration isolation system, and determining positive stiffness of the spring;step 2: establishing an electromagnetic force expression under magnetic unsaturation, and determining an electromagnetic attraction force of an electromagnet;step 3: enabling a negative stiffness electromagnetic actuator to be symmetrical up and down, and establishing an electromagnetic force-displacement expression according to the negative stiffness electromagnetic actuator under a condition of magnetic unsaturation;step 4: analyzing the ...

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Номер записи: 84
13-09-2018 дата публикации

Attenuation of load oscillations without additional measuring means on the load side

Номер: US20180259933A1
Автор: Carsten Hamm, Stefan Künzel
Принадлежит: SIEMENS AG

A method for attenuating load oscillations in a load mechanism having a controlled drive, wherein a load is coupled mechanically to a motor via a spring element, includes determining an actual motor torque value, determining an actual angular velocity value, determining a motor inertial torque, calculating a spring torque from the actual angular velocity value, the motor inertial torque and the actual motor torque value, and supplying the calculated spring torque to an attenuator connection for attenuating the load oscillations.

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Номер записи: 85
04-12-2014 дата публикации

ADAPTIVE OPEN LOOP CONTROL TO REDUCE ENGINE INDUCED VIBRATION AND NOISE

Номер: US20140358366A1
Автор: LEE Ping, SOPOCI JOHN D.
Принадлежит: GM GLOBAL TECHNOLOGY OPERATIONS LLC

Methods and systems are provided for controlling an active vibration system. In one embodiment, a method of controlling an active vibration system associated with an engine is provided. The method includes: receiving engine parameters indicating one or more engine operating conditions; determining an operating mode of the active vibration system to be at least one of a sensing mode and a force generation mode based on the engine parameters; and selectively controlling the active vibration system based on the operating mode. 1. A method of controlling an active vibration system associated with an engine , comprising:receiving engine parameters indicating one or more engine operating conditions;determining an operating mode of the active vibration system to be at least one of a sensing mode and a force generation mode based on the engine parameters; andselectively controlling the active vibration system based on the operating mode.2. The method of claim 1 , wherein the determining comprises determining the operating mode to be the sensing mode and wherein the method further comprises receiving a current signal from the active vibration system in response to the operating mode being the sensing mode.3. The method of claim 2 , further comprising determining a vibration level based on the current signal.4. The method of claim 3 , further comprising updating tables of a datastore based on the vibration level.5. The method of claim 4 , wherein the determining comprises determining the operating mode to be the force generation mode claim 4 , and wherein the selectively controlling the active vibration system is based on the vibration level of the tables.6. The method of claim 2 , further comprising generating a switch control signal to a switch associated with the active vibration system such that the current signal is received in response to the operating mode being the sensing mode.7. The method of claim 1 , wherein the engine parameters indicate an operating mode of the ...

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Номер записи: 86
04-10-2018 дата публикации

METHOD FOR IMPROVED SEMICONDUCTOR PROCESSING EQUIPMENT TOOL PEDESTAL / PAD VIBRATION ISOLATION AND REDUCTION

Номер: US20180283486A1
Автор: KIM-WHITTY SUK K.
Принадлежит: SK COMMERCIAL CONSTRUCTION, INC.

A method to improve vibration isolation in semiconductor process level inhibits vibration frequencies transmitted through building structure from production tools, pumps, compressors, chillers, AHUs (Air Handling Units), and footfalls traffic on raised floor system on to tool pedestals and pads from affecting semiconductor fabrication processes. Rapid advancement and technological evolution in semiconductor industry foresee the imminent requirements for decrease in semiconductor chip node sizes to single digit nanometer. Dealing with such advancements, the tool pedestal systems are also requiring tighter specifications for stiffness and vibration isolation/reduction. Some key tools used in the semiconductor fabrication process require improved barrier from electromagnetic interference (EMI), as the disturbance from EMI degrade the performance of semiconductor processing tools that are key to the fabrication process and production yield rate. 1. A method for eliminating or substantially reducing process-inhibiting vibrations within a high-precision semiconductor device fabrication facility , comprising the steps of:supporting a high-precision semiconductor device fabrication equipment on a hybrid tool pedestal system within a building having a building structure susceptible to vibration transmission and that may be exposed to and susceptible to transmitting process inhibiting vibrations to said high-precision semiconductor device fabrication equipment, wherein said hybrid tool pedestal system comprises a multi-layered material construction formed of materials selected for isolating varying vibration frequencies by virtue of the combined isolation of said multi-layered material construction;positioning said hybrid tool pedestal system on a raised floor, said raised floor for structurally separating a building floor from said hybrid tool pedestal system for providing a first portion of vibration isolation between the high-precision semiconductor device fabrication ...

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Номер записи: 87
23-12-2021 дата публикации

Microelectromechanical membrane transducer with active damper

Номер: US20210395075A1
Автор: Domenico Giusti, Fabio Quaglia
Принадлежит: STMICROELECTRONICS SRL

A microelectromechanical membrane transducer includes: a supporting structure; a cavity formed in the supporting structure; a membrane coupled to the supporting structure so as to cover the cavity on one side; a cantilever damper, which is fixed to the supporting structure around the perimeter of the membrane and extends towards the inside of the membrane at a distance from the membrane; and a damper piezoelectric actuator set on the cantilever damper and configured so as to bend the cantilever damper towards the membrane in response to an electrical actuation signal.

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Номер записи: 88
22-10-2015 дата публикации

ADAPTER TO ATTACH IMPLEMENTS TO AN ACTIVELY CONTROLLED HUMAN TREMOR CANCELLATION PLATFORM

Номер: US20150300394A1
Автор: Pathak Anupam J.
Принадлежит:

Embodiments are disclosed of an adapter for coupling an implement to a tremor cancellation platform. The adapter includes a first section attached to the tremor cancellation platform, the first section comprising an elongated tapered key having a base and a tip, the base having a greater transverse dimension than the tip and the base being attached to the tremor cancellation platform. The adapter also includes a second section coupled to the implement, the second section including a tapered cavity sized and shaped to receive the first section, and a latch to lock the second section onto the first section. 1. An adapter for coupling an implement to a tremor cancellation platform , the adapter comprising:a first section attached to the tremor cancellation platform, the first section comprising an elongated tapered key having a base and a tip, the base having a greater transverse dimension than the tip and the base being attached to the tremor cancellation platform;a second section coupled to the implement, the second section including a tapered cavity sized and shaped to receive the first section; anda latch to lock the second section onto the first section.2. The adapter of wherein the cross-sectional shape of the elongated key is non-symmetric to prevent the implement from being attached to the tremor cancellation platform in the wrong orientation.3. The adapter of wherein the cross-sectional shape of the elongated tapered key includes a substantially flat portion smoothly connected to a curved portion.4. The adapter of claim 1 , further comprising a contactless switch positioned in the first section to automatically activate the tremor cancellation platform when the first section is inserted in the second section.5. The adapter of wherein the contactless switch is magnetically activated and wherein the second section includes an embedded magnet positioned to activate the contactless switch when the first section is inserted in the second section.6. The adapter of ...

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Номер записи: 89
03-09-2020 дата публикации

METHOD AND APPARATUS FOR ISOLATING A VIBRATION OF A POSITIONING DEVICE

Номер: US20200278076A1
Автор: MAYINGER Philipp
Принадлежит:

A method and an apparatus for isolating a vibration of a positioning device are provided. The apparatus includes a base plate for the positioning device, at least one active bearing element for bearing the base plate on/at a foundation and at least one evaluation and control device. The apparatus includes at least one means for determining a foundation movement-dependent quantity, wherein the active bearing element is controllable by the at least one control and evaluation device on the basis of the foundation movement-dependent quantity. 1. An apparatus for isolating a vibration of a positioning device , the apparatus comprising:a base plate for the positioning device;at least one active bearing element for bearing the base plate on/at a foundation;at least one evaluation and control device;at least one means for determining a foundation movement-dependent quantity; andthe at least one active bearing element being controllable by the at least one evaluation and control device based on the foundation movement-dependent quantity.2. The apparatus as claimed in claim 1 , wherein the at least one active bearing element further comprises a spring element and/or a damping element.3. The apparatus as claimed in claim 1 , further comprising:at least one means for determining a base plate movement-dependent quantity, and/orat least one means for determining an inherent movement-dependent quantity of the positioning device,wherein the at least one active bearing element is additionally controllable by the at least one evaluation and control device based on the base plate movement-dependent quantity and/or the inherent movement-dependent quantity of the positioning device.4. The apparatus as claimed in claim 3 , wherein the inherent movement-dependent quantity of the positioning device is determinable based on a model.5. The apparatus as claimed in claim 1 , wherein:a maximum producible force of the at least one active bearing element is larger than 100 N, and/ora dynamical ...

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Номер записи: 90
19-10-2017 дата публикации

VIBRATION-DAMPENING AIR COMPRESSOR ASSEMBLY

Номер: US20170298918A1
Автор: Rado Gordon E.
Принадлежит:

An air compressor assembly may include a support structure, an operating unit including a compressor operatively connected to a motor through at least one drive belt, and at least one vibration isolator that is positioned between at least a portion of the support structure and at least a portion of the operating unit. The vibration isolator(s) is configured to dampen vibratory energy generated by the operating unit. 1. An air compressor assembly comprising:a support structure;an operating unit including a compressor, electric motor, mounting plate, hinge plate, and drive belt, the compressor operatively connected to the electric motor through a least one drive belt, the compressor positioned above the support structure and the electric drive motor positioned internal to the support structure;the electric motor supported and positioned below the compressor by the hinge plate connected to the mounting plate by a hinge pin and the drive belt, the weight of the electric motor applying tension to the drive belt; andat least one vibration isolator that is positioned between the top surface of the support structure and the operating unit, the at least one vibration isolator being configured to dampen vibratory energy generated by the operating unit.2. The air compressor assembly of claim 1 , further comprising a mounting plate with an anchoring component for the hinge pin claim 1 , wherein the electric motor and hinge plate securely connects to the mounting plate through the hinge pin such that the operating unit can move relative to the support structure without affecting the tension on the drive belt.3. The air compressor assembly of claim 1 , wherein a box support structure forms openings in the top surface through which the support structure can pass.4. The air compressor assembly of claim 1 , wherein the compressor and mounting plate are located above the top surface of the support structure.5. The air compressor assembly of claim 1 , wherein the vibration isolation ...

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Номер записи: 91
18-10-2018 дата публикации

LIQUID DAMPER SYSTEM

Номер: US20180298981A1
Автор: ISHIDA Yukio, KAGATA Kakeru, KOJIMA Shogo
Принадлежит: TMT Machinery, Inc.

A liquid damper system for restraining vibrations generated in a rotating body includes: a liquid damper which is coaxially rotatable with the rotating body and includes a collision member, the collision member being provided in a casing in which liquid is enclosed and the liquid colliding with the collision member when moving in the circumferential direction; and a relative rotation unit configured to cause the liquid damper to rotate relative to the rotating body. Vibrations of a rotating body are effectively suppressed when a rotating body steadily rotates at a main resonance frequency, in the liquid damper system. 1. A liquid damper system for restraining vibrations occurring in a rotating body , comprising:a liquid damper which is coaxially rotatable with the rotating body and includes a collision member, the collision member being provided in a casing in which liquid is enclosed, and the liquid colliding with the collision member when moving in the circumferential direction; anda relative rotation unit configured to cause the liquid damper to rotate relative to the rotating body.2. The liquid damper system according to claim 1 , wherein claim 1 , as the relative rotation unit claim 1 , an air resistance imparting member is provided to increase air resistance when the liquid damper rotates.3. The liquid damper system according to claim 2 , wherein claim 2 , the air resistance imparting member is a plate member having a surface intersecting with the rotational direction of the liquid damper.4. The liquid damper system according to claim 3 , wherein claim 3 , the plate member is provided on an outer circumferential surface of the liquid damper.5. The liquid damper system according to claim 3 , wherein claim 3 , the plate member is provided on an end face in the axial direction of the liquid damper.6. The liquid damper system according to claim 4 , wherein claim 4 , the plate member is tilted toward downstream in the rotational direction as compared to the ...

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Номер записи: 92
10-11-2016 дата публикации

ISOLATION SYSTEMS FOR IMAGE DATA GATHERING DEVICES

Номер: US20160325848A1
Автор: HAILU HAFTAY, Humphrey Ian P., Langworthy Joanna, Marden Michael C., Pieri Mario
Принадлежит:

An image gathering system includes an intelligence, surveillance and reconnaissance (ISR) device, an isolation system with a damper, and a controller operatively associated with the damper. The damper has a vehicle coupling and a payload coupling, and the payload coupling is connected to the ISR system. The controller is operatively associated with the damper to change the damping coefficient of the damper based on an expected vibration signature of a vehicle coupled to the isolation system through the vehicle coupling of the damper. 1. An image gathering system , comprising:an intelligence, surveillance and reconnaissance (ISR) system;an isolation system having at least one adaptive damper, wherein the adaptive damper has vehicle and payload couplings, the payload coupling being connected to the ISR system; anda controller operatively associated with the adaptive damper to change a damping characteristic of the adaptive damper based on an expected vibration signature of a vehicle coupled to the isolation system through the adaptive damper vehicle coupling.2. An image gathering system as recited in claim 1 , wherein the adaptive damper comprises a variable damper with a first and second damping characteristics claim 1 , the first damping coefficient being associated with a first vehicle type and the second damping coefficient being associated with a second vehicle type.3. An image gathering system as recited in claim 1 , wherein the adaptive damper comprises a variable fluid damper.4. An image gathering system as recited in claim 1 , wherein the ISR system has six degrees of freedom relative to a vehicle mounting the ISR system claim 1 , and the isolation system comprises between six and ten adaptive dampers arranged to isolate the ISR system relative to each of the six degrees of freedom.5. An image gathering system as recited in claim 1 , further including a vibration sensor communicative with the controller to receive information relating to vehicle vibration and ...

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Номер записи: 93
08-11-2018 дата публикации

Magnetorheological-damper-based steering apparatus and methods for reducing steering wheel jerk resulting from off-road wheel impact

Номер: US20180319435A1
Автор: Chris M. Paiva, Geoffrey Bossio, Steven Thompson, Zachary Grifka
Принадлежит: FORD GLOBAL TECHNOLOGIES LLC

Magnetorheological-damper-based steering apparatus and methods for reducing steering wheel jerk resulting from off-road wheel impact are described. An example steering damper apparatus includes a magnetorheological (MR) rotary damper to be operatively coupled to a steering column shaft. The example steering damper apparatus further includes a sensor to detect an angular velocity associated with the steering column shaft. The example steering damper apparatus further includes a controller to energize the MR rotary damper in response to determining that the angular velocity exceeds an angular velocity threshold. The angular velocity threshold is associated with steering wheel jerk resulting from an off-road wheel impact.

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Номер записи: 94
24-12-2015 дата публикации

Instrumented Damper And Performance Monitoring System Comprising Such A Damper

Номер: US20150369328A1
Автор: Levallard Patrice, Sautier Pascal
Принадлежит:

A damper having an external armature that is symmetric about a longitudinal axis, an internal armature that is arranged partially inside the external armature and a vibration absorber that in a damped manner couples the internal and external armatures together. The damper having •an arm parallel to the longitudinal axis, fixed in the manner of a cantilever to one of the armatures and provided with a magnetic dipole; •at least one 3D Hall-effect magnetic sensor, secured to the other armature and positioned facing the dipole parallel to the longitudinal axis and separated from the dipole by a determined gap; •at least one temperature sensor positioned in thermal contact with the vibration absorber; •at least one force sensor arranged in such a way as to generate data indicative of pressures or loads experienced by the vibration absorber; •a transmitter of the data generated by the sensors; •an electrical power supply. 2. The damper as claimed in claim 1 , in which the transmitter is a wireless transmitter.3. The damper as claimed in claim 1 , in which the data are generated by the sensors continuously or according to a determined sequence.4. The damper as claimed in claim 1 , further comprising a memory for storing the data generated by the sensors.590900. The damper as claimed in claim 1 , in which the power supply ( claim 1 , ) comprises at least one battery.6. The damper as claimed in claim 1 , in which the power supply comprises at least one mechanical energy harvesting system.7. The damper as claimed in claim 1 , further comprising a data processing unit linked electrically to the electrical power supply claim 1 , and capable of processing the data generated by the sensors before their transmission by the transmitter.8. The damper as claimed in claim 7 , in which the processing of the data by the data processing unit consists in conditioning and/or sampling the data generated by the sensors.9. The damper as claimed in claim 7 , in which the data processing unit ...

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Номер записи: 95
14-11-2019 дата публикации

METHOD FOR DETERMINING A STATE OF A TORSIONAL VIBRATION DAMPER OF A VEHICLE

Номер: US20190346010A1
Автор: MOHR Carsten
Принадлежит: SCHAEFFLER TECHNOLOGIES AG & CO. KG

A failure state of a torsional vibration damper is analyzed by means of an acoustic sensor. The acoustic sensor may be present in the vehicle for other reasons, such as a knock sensor of a gasoline engine or an injection sensor of a diesel engine. Fault images of the torsional vibration damper are determined for specified operating points of the vehicle during vehicle operation. The fault monitoring can be carried out easily while the vehicle is being driven and replaces a visual check in the workshop. 1. A method for determining the state of a torsional vibration damper of a vehicle , with which a state is detected by detecting structure-borne sound waves , wherein the structure-borne sound waves are analyzed according to the operating point using an image of the structure-borne sound that is acquired while the vehicle is being driven.2. The method of claim 1 , wherein for determining the state of the torsional vibration damper the image of the structure-borne sound of a sensor positioned at a distance from the torsional vibration damper is analyzed.3. The method of claim 2 , wherein the image of the structure-borne sound of an acoustic sensor that is present in the vehicle is analyzed.4. The method of claim 3 , wherein a knock sensor that is disposed on a gasoline engine is used as a sensor that is present in the vehicle.5. The method of claim 3 , wherein an injection amount determining sensor of a diesel engine is used as a sensor that is present in the vehicle.6. The method of claim 1 , wherein a method of analyzing the image of the structure-borne sound is determined depending on the operating point of the vehicle.7. The method of claim 6 , wherein as the analysis method an amplitude of a sensor signal of the sensor is analyzed at a specified frequency.8. The method of claim 6 , wherein a frequency modulation analysis or a sideband analysis is used as the analysis method.9. The method of claim 1 , wherein a wear state of the torsional vibration damper is ...

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Номер записи: 96
12-11-2020 дата публикации

ACTIVE COMPOSITE VARIABLE DAMPING ROTATIONAL CONTROL DEVICE

Номер: US20200355237A1
Автор: Wang Hao, ZHANG Chunwei
Принадлежит:

An active composite variable damping rotational control device includes a variable damping module and a power module. The variable damping module includes a magnetorheological fluid tank and a rotational inertia wheel. The rotational inertia wheel is arranged in the magnetorheological fluid tank fully filled with magneorheological fluid. The power module includes a device tubular cavity, a driver, an encoder and a speed changer. The driver is fixed on the inner wall of the device tubular cavity. The driver, the encoder and the speed changer are coaxial. A driving shaft of the driver passes through the speed changer and extends into the magnetorheological fluid tank to be fixed perpendicularly at the center of the rotational inertia wheel. The control effect of the present invention may not be greatly affected by the change of a structural form and the change of an external load. 1100200. An active composite variable damping rotational control device , comprising: a variable damping module () and a power module () , wherein{'b': 100', '1', '2', '1', '1', '12', '2', '1', '2', '12', '1', '1', '1', '8, 'the variable damping module () comprises a magnetorheological fluid tank () and a rotational inertia wheel (); the magnetorheological fluid tank () is of a round tube shape; the magnetorheological fluid tank () is fully filled with magnetorheological fluid (); the rotational inertia wheel () is arranged in the magnetorheological fluid tank (); the rotational inertia wheel () is surrounded by the magnetorheological fluid (); two circular end surfaces (.) of the magnetorheological fluid tank () are respectively provided with an electromagnetic gauze ();'}{'b': 200', '3', '4', '5', '6', '3', '3', '3', '1', '1', '1', '4', '3', '100', '4', '5', '100', '4', '6', '4', '4', '1', '4', '1', '4', '6', '4', '1', '2, 'the power module () comprises a device tubular cavity (), and a driver (), an encoder () and a speed changer () which are fixed in the device tubular cavity (); the ...

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Номер записи: 97
28-11-2019 дата публикации

SAFETY APPARATUS FOR TRANSPORTING MEDICAL PATIENTS

Номер: US20190358101A1
Автор: Quigg Erik, Steuer Fritz
Принадлежит:

A transport incubator comprising an incubator, frame, and supporting components. The incubator is self-leveling, vibrationally isolated, and features active noise canceling or reduction. The frame is composed of lightweight composites and features composite air tanks. 1. A medical transport apparatus , comprising:a patient containment portion, a base, and one or more arm in communication with the base and the patient containment portion; andone or more system in operable communication with the base capable of providing leveling, and/or isolating, canceling, and/or reducing vibration, and/or canceling or reducing noise to the patient containment portion.2. The medical transport apparatus of claim 1 , further comprising a covering capable of reducing light transmission therethrough.3. The medical transport apparatus of claim 2 , wherein the covering is capable of being rendered opaque claim 2 , transmissive claim 2 , partially transmissive claim 2 , tinted claim 2 , and/or wholly or partially transparent.4. The medical transport apparatus of claim 1 , wherein the base comprises a carbon composite material.5. The medical transport apparatus of claim 1 , wherein the one or more system in operable communication with the base comprises a gimballing system.6. The medical transport apparatus of claim 5 , wherein the gimballing system comprises one or more arm in operable communication with one or more motor claim 5 , which gimballing system is capable of providing for control of one or more of pitch claim 5 , yaw claim 5 , roll claim 5 , or other angle or position of the patient containment portion.7. The medical transport apparatus of claim 5 , wherein the gimballing system comprises:a first motor in operable communication with the patient containment portion and a first gimballing arm, which first motor is capable of providing for control of a pitch of the patient containment portion;a second motor in operable communication with the first gimballing arm and a second ...

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Номер записи: 98
28-11-2019 дата публикации

VEHICLE SEAT ACTIVE SUSPENSION CONTROL BASED ON VEHICLE POSITION

Номер: US20190359098A1
Автор: II Antonio, Knox Lawrence D., Sangermano
Принадлежит: ClearMotion Acquisition I LLC

A system and method that establishes a confidence in a vehicle position determined by a vehicle position determination system and uses the established confidence to change a behavior of an active suspension system of a plant in the vehicle. 120-. (canceled)21. A method of operating a suspension system of a vehicle , wherein the suspension system includes a controllable suspension element , the method comprising:determining an approximate location of a vehicle;calculating a level of confidence associated with the determined vehicle location; andcontrolling, based at least in part on the calculated level of confidence and the determined location, the controllable suspension element.22. The method of claim 21 , wherein the suspension system comprises a microprocessor that outputs commands to the controllable suspension element claim 21 , and wherein controlling the controllable suspension element comprises:determining, by the microprocessor and based at least in part on the determined location of the vehicle and the calculated level of confidence, a control signal;receiving, at the controllable suspension element, the control signal;in response to the receiving, adjusting a behavior of the controllable suspension element.23. The method of claim 21 , wherein the controllable suspension element is a damper claim 21 , and wherein controlling the controllable suspension element comprises:changing a damping rate of the damper.24. The method of claim 22 , wherein the microprocessor determines the control signal using a feed-forward architecture.25. The method of wherein the microprocessor determines the control signal using a feedback architecture.26. The method of claim 25 , wherein the microprocessor determines the control signal by:determining, using the feed-forward architecture, a first potential control signal;determining, using the feedback architecture, a second potential control signal;determining the control signal by calculating a weighted sum of the first ...

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Номер записи: 99
27-12-2018 дата публикации

VEHICLE SEAT ACTIVE SUSPENSION CONTROL BASED ON VEHICLE POSITION

Номер: US20180370399A1
Автор: II Antonio, Knox Lawrence D., Sangermano
Принадлежит: ClearMotion Acquisition I LLC

A system and method that establishes a confidence in a vehicle position determined by a vehicle position determination system and uses the established confidence to change a behavior of an active suspension system of a plant in the vehicle. 1. A method , comprising:establishing a confidence in a vehicle position determined by a vehicle position determination system; andusing the established confidence to change a behavior of an active suspension system of a plant in the vehicle.2. The method of wherein the active suspension system comprises a controller that outputs commands to an actuator to control motion of the plant.3. The method of wherein the established confidence is used to weight the controller commands claim 2 , so as to weight plant motion.4. The method of wherein the controller comprises a feed-forward architecture.5. The method of wherein the controller further comprises a feedback architecture.6. The method of wherein the established confidence is used to weight the relative contribution to the controller commands from the feed-forward and feedback architectures.7. The method of wherein when the confidence is high the weight from the feed-forward contribution to the controller is higher than it is when the confidence is low.8. The method of wherein the controller comprises both a feed-forward architecture and a feedback architecture claim 2 , both of which are involved in creating the controller commands.9. The method of wherein the vehicle position determination system determines an initial vehicle position estimate based on GPS data claim 2 , records a sequence of sensor data from a sensor located with the vehicle claim 2 , and refines the initial vehicle position estimate by performing pattern matching that looks for the presence of a known sequence of data obtained from the measured data claim 2 , in the recorded sequence of sensor data.10. The method of wherein the pattern matching is performed by multiplying a sequence consisting of n numbers ...

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Номер записи: 100