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An Encoder Analysis Method

An analytical method and encoder technology, applied in instruments, electromagnetic measuring devices, measuring devices, etc., can solve problems such as deviation of the actual position calculated

Active Publication Date: 2018-09-28
QIAOHONG NUMERICAL CONTROL TECH SHANGHAI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Deviation in the calculated actual position due to glitches in the position signal P

Method used

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Embodiment Construction

[0037] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.

[0038] The core of the invention is to provide an encoder analysis method.

[0039] In order to enable those skilled in the art to better understand the solution of the present invention, the present invention will be further described in detail below in conjunction with the accompanying drawings and specific embodiments.

[0040] image 3 It is a flow chart of an encoder analysis method provided by the present invention. Such as image 3 As...

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Abstract

The invention discloses an encoder parsing method.The method includes the steps that original QEP values corresponding to original signals of an encoder are calculated through a QEP circuit; initial position signals of the encoder are obtained according to the original QEP values, sine wave signals of the encoder and cosine wave signals of the encoder; a comparison QEP value is obtained; the QEP value is the sum of the original QEP values and the deviation quantity; second angle signals are obtained; comparison position signals of the encoder are obtained according to the comparison QEP value and the second angle signals; in a cycle, whether the current position meets the first preset condition or not is judged, if the current position meets the first preset condition, the comparison position signals serve as actual position signals of a motor of the encoder, and if the current position does not meet the first preset condition, the original position signals serve as actual position signals of the motor of the encoder.By means of the method, position deviation caused by desynchrony of hardware treatment can be avoided.

Description

technical field [0001] The invention relates to the field of computer technology, in particular to an encoder analysis method. Background technique [0002] An encoder is a device that compiles and converts signals (such as bit streams) or data into signal forms that can be used for communication, transmission, and storage. It is an important step to analyze the waveform output by the encoder. [0003] In the prior art, the analysis method for the encoder is mainly based on the sine wave and cosine wave output by the encoder, and the specific analysis method is as follows: [0004] 1) The output signal P1 is obtained through the calculation of the QEP circuit; [0005] 2) Calculate the angle signal P2 corresponding to each sine wave period and cosine wave period by using atan2 through the sine wave and cosine wave; [0006] 3) Add the output signal P1 and the angle signal P2 to obtain the position signal P, and the position signal P is the position of the motor of the enc...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01B7/00
CPCG01B7/003
Inventor 吴强
Owner QIAOHONG NUMERICAL CONTROL TECH SHANGHAI