Evaluation of interpolation errors of optical-electric encoders based on the fitted curves of Lissajous

LIU Han-ping~

doi:10.13873/j.1000-97872006.02.024

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Evaluation of interpolation errors of optical-electric encoders based on the fitted curves of Lissajous

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- Evaluation of interpolation errors of optical-electric encoders based on the fitted curves of Lissajous
- Issue 2, Pages: 70-72(2006)
- 作者机构：
  
  1. 中国科学院长春光学精密机械与物理研究所
  2. 中国科学院长春光学精密机械与物理研究所,吉林,长春,130033
  3. 中国科学院研究生院
  4. ,北京,100039
- 作者简介：
- 基金信息：
- DOI：10.13873/j.1000-97872006.02.024
  CLC： TN762
- Published：2006
- 稿件说明：
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[1]刘汉平,冯长有,丁林辉.Lissajous曲线拟合法评估编码器细分误差[J].传感器与微系统,2006(02):70-72.

LIU Han-ping~. Evaluation of interpolation errors of optical-electric encoders based on the fitted curves of Lissajous[J]. 2006, (2): 70-72.
[1]刘汉平,冯长有,丁林辉.Lissajous曲线拟合法评估编码器细分误差[J].传感器与微系统,2006(02):70-72. DOI： 10.13873/j.1000-97872006.02.024.

LIU Han-ping~. Evaluation of interpolation errors of optical-electric encoders based on the fitted curves of Lissajous[J]. 2006, (2): 70-72. DOI： 10.13873/j.1000-97872006.02.024.

摘要

为实现编码器细分误差的快速评估

提出了一种L issajous曲线拟合法评估编码器细分误差的方法。采集编码器两路相位差为π/2的三角波光电信号

然后

对光电信号归一化处理后得到两路信号的L issajous曲线

利用数值函数拟合实验得到L issajous曲线

并进行拟合优度检验

最后

利用数值函数表计算编码器的细分误差。多次实验验证:该方法是简单可行的。

Abstract

In order to reduce the time of evaluating the interpolation errors of optical-electric encoders

a method of curves fitting of the Lissajous is proposed.Sampling two photoelectric trigonal wave signals of optical-electric encoders with a phase difference of π/2

and then the two signals are processed to Lissajous signal.This Lissajous signal is fitted by numerical function curves

meanwhile the degree of fitting for regression equation is evaluated.With the numerical function curves

errors of interpolation are obtained.The final experiment results validate the numerical function curves model.

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Keywords

references

两步法测量编码器测角误差 [J]. 佘琳,冯长有,丁林辉. 光学精密工程 . 2004(01)

高精度绝对式编码器的信号处理 [J]. 刘丰文. 光电工程 . 1999(02)

应用统计[M]. 清华大学出版社 , 陆璇编著, 1999

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