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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

Inactive Publication Date: 2010-07-14
ZHUZHOU ELITE ELECTRO MECHANICAL
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Therefore, an angle sensor needs to be installed on the EPS, which brings certain difficulties to the structural design of the steering gear, and also increases the cost.

Method used

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

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0026] Such as figure 1 , figure 2 , Figure 5 , Figure 8 As an example, the magnetoelectric encoder consists of 35 magnetic poles, which are installed in 35 of the 36 positions of the code disc divided into 36 equal parts, and a printed board is equipped with a pair of Hall elements. To sense the magnetic pole signal of the code disc to form the original signal of the encoder, and through the built-in absolute position detection method Figure 5 After the circuit shown is further processed, the traditional two-way A, B quadrature signal and direction signal are formed to be compatible with and ensure the general application of the motor; and the positioning signal of the characteristics of the present invention is formed; the digitalized current motor can be further output from the serial port Absolute position information (number of rotations + current phase); Capacitor C1 in this circuit is a farad capacitor, which is used as a backup power supply when the external po...

Embodiment 2

[0029] Such as image 3 , Figure 4 , Figure 6 , Figure 8 As an example, the photoelectric encoder has 71 gratings, and the 71 gratings are engraved on 71 of the 72 positions on the code disc divided into 72 equal parts. A printed board is equipped with a pair of optical interrupters. To sense the grating position of the code disc to form the original signal of the encoder, through the built-in absolute position detection method Figure 6 After the circuit shown is further processed, the traditional two-way A, B quadrature signal and direction signal are formed to be compatible with and ensure the general application of the motor; and the positioning signal of the characteristics of the present invention is formed; the digitalized current motor can be further output from the serial port Absolute position information (number of rotations + current phase); capacitor C1 in this circuit is a farad capacitor, which is used as a backup power supply when the external power suppl...

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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.

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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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01D5/245G01D5/36G01B7/00G01B7/30G01B11/00G01B11/26
Inventor 李昭灿周廷明赵斌陈奇志林联伟石广林赵楠
Owner ZHUZHOU ELITE ELECTRO MECHANICAL
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