Calibration of dynamic precision for measurement platform of photoelectric encoder

Hai YU; Qiu-hua WAN; Xin-ran LU; Chang-hai ZHAO; Li-hui LIANG

doi:10.3788/OPE.20162411.2699

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Calibration of dynamic precision for measurement platform of photoelectric encoder

Modern Apploed Optics | 更新时间：2020-07-07

- Calibration of dynamic precision for measurement platform of photoelectric encoder
- Editorial Office of Optics and Precision Engineeri Vol. 24, Issue 11, Pages: 2699-2704(2016)
- 作者机构：
  
  中国科学院长春光学精密机械与物理研究所, 吉林长春 130033
- 作者简介：
- 基金信息：
- DOI：10.3788/OPE.20162411.2699
  CLC： TP212.1
- Received：29 March 2016，
  
  Accepted：23 May 2016，
  
  Published：25 November 2016
- 稿件说明：
移动端阅览
Hai YU, Qiu-hua WAN, Xin-ran LU, et al. Calibration of dynamic precision for measurement platform of photoelectric encoder[J]. Editorial office of optics and precision engineeri, 2016, 24(11): 2699-2704.
DOI：

Hai YU, Qiu-hua WAN, Xin-ran LU, et al. Calibration of dynamic precision for measurement platform of photoelectric encoder[J]. Editorial office of optics and precision engineeri, 2016, 24(11): 2699-2704. DOI： 10.3788/OPE.20162411.2699.

摘要

由于光电编码器动态检测转台的分辨率、精度和转速都比较高，传统检测手段很难精确标定该类转台的动态精度，故本文开展了转台动态精度标定方法的研究。首先，分析动态转台工作原理，指出了影响转台动态精度的主要因素。然后，研究了动态误差的主要特性，提出了一种基于动态重复性的转台动态精度标定方法。最后，设计了FPGA+USB的数据采集电路，实现了对转台动态精度的标定。对自行研制的转台进行了动态精度标定。标定结果显示：提出的动态精度标定方法能够实现对转台的标定，验证了该转台能够实现对被检编码器的动态检测，解决了研制动态转台时缺少动态检测精度标定方法的难题。

Abstract

The dynamic measurement platforms for photoelectric encoders are characterized by higher resolution

higher accuracy

and higher rotation speeds

and traditional measurement methods are difficult to calibrate its dynamic measurement accuracy. So

this paper proposes a calibration method for the measurement platforms. The working principle of the platforms was analyzed

and some factors effecting the measuring accuracy of the platforms was pointed out. The main characteristics of dynamic errors were researched and analyzed and a dynamic calibration method for the platforms was introduced based on its dynamic repetition characteristics. Finally

a FPGA+USB data collection circuit was designed to use in the calibration method. The method was successfully utilized to calibrate some self-developed dynamic platforms. The results show that the method proposed is capable of calibrating dynamic rotation platforms

and verify that the measurement platform can implement the dynamic measurement of photoelectric encoders. The method solves the problem of dynamic calibration for dynamic rotation platforms.

关键词

Keywords

references

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Changchun Institute of Optics, Fine Mechanics and Physics, Chinese Academy of Sciences, Changchun 130033, China

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