Self-carried absolute position detecting device carried of motor and detecting method

An absolute position and detection device technology, applied in the direction of measuring devices, electrical devices, optical devices, etc., can solve the problems of difficulty in structural design and cost increase of steering gears, and achieve strong anti-interference ability, reduced production costs, and stability high effect
CN101776464AInactive Publication Date: 2010-07-14ZHUZHOU ELITE ELECTRO MECHANICAL
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
ZHUZHOU ELITE ELECTRO MECHANICAL
Publication Date
2010-07-14
Estimated Expiration
Not applicable · inactive patent

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Abstract

The invention discloses a self-carried absolute position detecting device of a motor and a detecting method. The detecting device comprises a coder code disk with a notch and an uninterrupted coder circuit. The function of the device is realized by the built-in absolute position detecting method. The invention can be used for detecting the absolute position of the motor; and when being used for an EPS (electric power steering gear), the motor with the absolute position detecting device can be used for detecting the angle position of a steering wheel.
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Description

technical field

[0001] The invention discloses an absolute position detection device and a detection method provided with the motor, which are used to detect the absolute position of the motor, specifically for detecting the angular position of the steering wheel when used in EPS. Background technique

[0002] The traditional servo motor has an encoder. When the motor rotates, the encoder generates two orthogonal pulse signals. The phase relationship between them is used to indicate the direction of rotation of the motor, and the number of pulses is counted to indicate the rotation angle of the motor.

[0003] When the motor is applied in the electric power steering (EPS) of the automobile, due to the needs of the return alignment and other control algorithms, it is required to obtain the rotation direction and angle of the motor, and at the same time, it is required to be able to detect the absolute position of the motor at all times, and then detect The current angular pos...

Claims

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