Motor rotation angle measurement device and method

A technology of rotation angle and measuring equipment, which is applied in the direction of measuring devices, motor control, and control of generators, etc. It can solve the problems of low precision, high cost, and poor reliability, and achieve the effects of fast response, low cost, and improved accuracy

Active Publication Date: 2017-08-29
XINJIANG GOLDWIND SCI & TECH
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Problems solved by technology

[0010] In order to solve the problems of low precision, poor reliability and high cost in the process of measuring the rotation ang

Method used

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  • Motor rotation angle measurement device and method
  • Motor rotation angle measurement device and method
  • Motor rotation angle measurement device and method

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Embodiment Construction

[0055] The following detailed description is provided to assist the reader in gaining an overall understanding of the methods and / or systems described herein. However, various changes, modifications, and equivalents of the methods and / or systems described herein will also be apparent to those skilled in the art. For example, the order of operations described here is exemplary only, and the order of operations is not limited to the order set forth herein, except for operations that must occur in a specific order, which can be used after understanding the disclosure of the present application. It will be apparent that the order of operations described herein is varied. Also, descriptions of features that are known in the art may be omitted for increased clarity and conciseness.

[0056] figure 1 is a connection schematic diagram showing a motor rotation angle measuring device according to an exemplary embodiment of the present invention.

[0057] refer to figure 1 , UA, UB, ...

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Abstract

The present invention provides a motor rotation angle measurement device and method. The device comprises: a signal conditioning circuit configured to receive three-phase output voltage of a motor and generate first square wave signals, second square wave signals and third square wave signals; and a processor used in one rotation period of the motor and configured to generate one six-multiplying frequency pulse when jumping of any one square wave signal in the first square wave signals, the second square wave signals and the third square wave signals is detected, generate compensation pulse between the current six-multiplying frequency pulse and a next six-multiplying frequency pulse based on the time interval between the current six-multiplying frequency pulse and a previous six-multiplying frequency pulse and a preset compensation subdivision coefficient k, and accumulate the number of the compensation pulse, wherein the number of the compensation pulse is correlated to the rotation angle of the motor. The motor rotation angle measurement device can improve the precision, the reliability and the stability of the rotation angle measurement of the motor and reduce the cost.

Description

technical field [0001] The invention relates to a device and method for measuring the rotation angle of a motor, in particular to a non-contact device and method capable of accurately measuring the rotation angle of a motor. Background technique [0002] At present, in many fields of engineering technology, it is necessary to measure the rotation angle of synchronous motors (generators and motors) in order to better observe the modes during the operation of synchronous motors, control the operation process and status of motors, and improve the working efficiency of motor units. efficiency and prolong the life of the motor unit. [0003] The method of synchronous motor rotation angle measurement is divided into: contact type and non-contact type. [0004] The contact-type synchronous motor rotation angle measurement method mainly includes: the rotation process of the motor is transmitted to the measuring equipment through various mechanisms or structures (such as the main sh...

Claims

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Application Information

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IPC IPC(8): G01B21/22
CPCG01B21/22G01D5/2046H02P9/009H02P2101/15G01B7/30G01D5/248H02P6/185H02P6/188H02P2203/03
Inventor 黄波霍江明
Owner XINJIANG GOLDWIND SCI & TECH
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