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Angle of rotation detection device

Номер патента: US20120139533A1. Автор: Shizuo Manabe. Владелец: Toyota Motor Corp. Дата публикации: 07-06-2012.
An angle of rotation detection device includes an electrical angle detector (resolver and R/D converter) having the electrical angle of 360° set smaller than the mechanical angle of 360°, and providing a two-phase encoder signal corresponding to the electrical angle of a rotor; a two-phase encoder counter counting a two-phase encoder signal, and providing a digital value corresponding to the electrical angle, and a multiplication factor detector detecting which position of the mechanical angle the electrical angle indicated by the signal output from the detector corresponds to, based on a change of the count value from the two-phase encoder counter. Thus, there can be provided an angle of rotation detection device that can identify the position of the mechanical angle while using the two-phase encoder output.

Method and device for preparing an analog sensor signal from a position sensor for transmission to an evaluation unit

Номер патента: DE10138640C1. Автор: Elmar Herzer. Владелец: Fraunhofer Gesellschaft zur Forderung der Angewandten Forschung eV. Дата публикации: 09-01-2003.
The invention aims at improving the evaluation of sensor signals of a position sensor with a mechanical period or, in general terms, cooperation between position sensors and evaluations units eliminating divergence between the electrically optimal period and the mechanically optimal period. According to the invention, this is achieved in that the sensor signal of a position sensor having a period, which depends upon a mechanical period of the position sensor scale, is previously translated into a translated signal for output or transmission to an evaluation unit, said translated signal having a period corresponding to a second mechanical period that has been set, for instance, to the electrically optimal period, whereby transmission errors can be minimized and evaluability improved while preventing complicated mechanical adjustment of the scale of the position sensor relative to the evaluation unit.

Optical position sensor and position determination method

Номер патента: US20020019714A1. Автор: Alvaro Kaplan, Jeffrey Carliale, John Kirkman. Владелец: Fluidsense Corp. Дата публикации: 14-02-2002.
A method of position measurement by processing at least two phase displaced signals and by selecting one signal for position measurement at a given position point. Specifically, the two phase displaced signals are quadrature signals and the selected signal has a more linear waveform slope relative to time at a given position point than the non-selected signal.

Position detection device and position detection method

Номер патента: JP7070556B2. Автор: 哲也 成田. Владелец: Sony Corp, Sony Group Corp. Дата публикации: 18-05-2022.

METHOD FOR CORRECTING THE SIGNAL OF A CAMSHAFT POSITION SENSOR

Номер патента: FR2827954B1. Автор: Bennaceur Manssouri, Franz Dietl, Jae Bong Koo. Владелец: Siemens Automotive SA. Дата публикации: 12-09-2003.

Phase detector for rotating equipment

Номер патента: CA2560361A1. Автор: Cheng Gi Cheng. Владелец: Weyerhaeuser Co Ltd. Дата публикации: 28-03-2007.
A very accurate rotational phase detection system is disclosed having first and second disks that are encoded with a 31-digit pseudo-random M-sequence, the first and second disks being attached to rotationally-coupled members. In the disclosed embodiment, the encoding is accomplished by dividing the disks into 31 sections and contouring the periphery of the disks such that sections corresponding to "1 " have a larger radius and sections corresponding to "0" have a smaller radius. Sensors-for example, inductive proximity sensors-are positioned near the periphery of the first and second disks that detect the encoded pseudo-random sequences and are periodically sampled (for example, at 50 kHz) to generate first and second detected sequences. The first and second detected sequences are processed to remove noise and to range between +1 and -1, and are then cross-correlated to determine the rotational phase relationship between the attached rotating members.

Encoder rotation measuring system for use in roller bearing, has two sensor assemblies with magnetic sensors opposite to coding units for detecting angular and absolute positions of encoder

Номер патента: FR2861459A1. Автор: Franck Landrieve. Владелец: SKF AB. Дата публикации: 29-04-2005.
The system has coding units (23) arranged circumferentially on an annular magnetic encoder (16) at intervals of 22.5 degrees. A sensor assembly has magnetic sensors (38) opposite to the units to detect an encoder angular position in multiple turns that are counted by an electronic counter. Another sensor assembly has magnetic sensors (24a-24d, 25a-25d) opposite to the units to find an encoder absolute position. An independent claim is also included for an instrumented rolling bearing having an outer ring, inner ring, and a rotation measuring system.

sensor system

Номер патента: DE10123292B4. Автор: Anton Rodi. Владелец: Anton Rodi. Дата публикации: 22-07-2010.
Sensorsystem, bei dem ein digitaler Absolutwert der jeweiligen Position eines feststehenden Teils (Stators) eines Gebers (1) gegenüber einem relativ dazu bewegbaren Teil (Rotor) gebildet wird, der seriell zu einer Auswerteschaltung (3) übertragen wird, wobei die Übertragung des Absolutwerts jeweils durch ein externes Signal eingeleitet wird, dadurch gekennzeichnet, dass sensorseitig jeweils die Änderung des Absolutwerts erfasst wird, dass jeweils ausgehend vom Zeitpunkt der Änderung eine Feinstinterpolation mit wählbarer Absolutauflösung erfolgt und dass bei Abfrage durch das externe Signal der Absolutwert durch das aufgelaufene Feinstinterpolationsergebnis ergänzt wird. A sensor system in which a digital absolute value of the respective position of a stationary part (stator) of an encoder (1) is formed with respect to a relatively movable part (rotor), which is transmitted serially to an evaluation circuit (3), wherein the transmission of the absolute value respectively is introduced by an external signal, characterized in that the sensor side each change of the absolute value is detected, that in each case starting from the time of change a Feinstinterpolation with selectable absolute resolution and that when queried by the external signal, the absolute value is supplemented by the accumulated Feinstinterpolationsergebnis.

SENSOR COMPRISING SENSITIVE AREAS DELIVERING DIFFERENTIATED AMPLITUDE SIGNALS

Номер патента: FR2904411A1. Автор: Christophe Duret, Pascal Desbiolles. Владелец: Societe Nouvelle de Roulements SNR SA. Дата публикации: 01-02-2008.
L'invention concerne un capteur d'un signal pseudo sinusoïdal, ledit capteur comprenant une pluralité de zones sensibles (1) qui sont aptes à délivrer chacune un signal Si représentatif du signal à détecter, les zones sensibles (1) sont agencées de sorte que, pour un même signal détecté, au moins une zone sensible (1) délivre un signal Si d'amplitude différente de celle du signal délivré par une autre zone sensible (1). L'invention concerne également des paliers équipés d'un tel capteur. The invention relates to a sensor of a pseudo-sinusoidal signal, said sensor comprising a plurality of sensitive zones (1) which are capable of delivering each a signal Si representative of the signal to be detected, the sensitive zones (1) are arranged so that , for the same signal detected, at least one sensitive zone (1) delivers a signal Si of amplitude different from that of the signal delivered by another sensitive zone (1). The invention also relates to bearings equipped with such a sensor.

Rotation angle detector

Номер патента: JPWO2011010516A1. Автор: 鎮男 眞鍋. Владелец: Toyota Motor Corp. Дата публикации: 27-12-2012.
回転角検出装置は、電気角の360°が機械角の360°よりも小さく設定され、回転子の電気角に対応する二相エンコーダ信号を出力する電気角検出部(レゾルバ(12)およびR/Dコンバータ(14))と、二相エンコーダ信号をカウントし、電気角に対応するデジタル値を出力する二相エンコーダカウンタ(41)と、二相エンコーダカウンタのカウント値の変化に基づいて、検出器の出力する信号が示す電気角が機械角のいずれの位置に相当するかを検出する軸倍角数検出部(42)とを備える。これにより二相エンコーダ出力を用いつつも、機械角の位置を認識可能とした回転角検出装置を提供することができる。 The rotation angle detection device is configured to have an electrical angle detector (resolver (12) and R / R) that outputs a two-phase encoder signal corresponding to the electrical angle of the rotor, in which the electrical angle of 360 ° is set smaller than the mechanical angle of 360 °. A D converter (14)), a two-phase encoder counter (41) that counts a two-phase encoder signal and outputs a digital value corresponding to an electrical angle, and a detector based on a change in the count value of the two-phase encoder counter And a shaft multiple angle number detector (42) for detecting which position of the mechanical angle the electrical angle indicated by the output signal of corresponds to. Accordingly, it is possible to provide a rotation angle detection device that can recognize the position of the mechanical angle while using the two-phase encoder output.