非均匀采样莫尔条纹信号的分析与处理

左洋; 龙科慧; 刘金国; 刘兵; 周磊; 乔克

doi:10.3788/OPE.20152304.1146

您当前的位置：

首页 >

文章列表页 >

非均匀采样莫尔条纹信号的分析与处理

信息科学 | 更新时间：2020-08-13

- 非均匀采样莫尔条纹信号的分析与处理
- Analysis and processing of Morié fringe signals based on non-uniform sampling
- 光学精密工程 2015年23卷第4期页码：1146-1152
- 作者机构：
  
  1. 中国科学院长春光学精密机械与物理研究所,吉林长春,中国,130033
  2. 中国科学院大学北京,中国,100049
- 作者简介：
- 基金信息：
  
  国家自然科学基金资助项目(No.61108066)()
- DOI：10.3788/OPE.20152304.1146
  中图分类号： TP212.12;TN762
- 收稿日期：2014-04-21，
  
  修回日期：2014-06-10，
  
  纸质出版日期：2015-04-25
- 稿件说明：
移动端阅览
左洋, 龙科慧, 刘金国等. 非均匀采样莫尔条纹信号的分析与处理[J]. 光学精密工程, 2015,23(4): 1146-1152

ZUO Yang, LONG Ke-hui, LIU Jin-guo etc. Analysis and processing of Morié fringe signals based on non-uniform sampling[J]. Editorial Office of Optics and Precision Engineering, 2015,23(4): 1146-1152
左洋, 龙科慧, 刘金国等. 非均匀采样莫尔条纹信号的分析与处理[J]. 光学精密工程, 2015,23(4): 1146-1152 DOI： 10.3788/OPE.20152304.1146.

ZUO Yang, LONG Ke-hui, LIU Jin-guo etc. Analysis and processing of Morié fringe signals based on non-uniform sampling[J]. Editorial Office of Optics and Precision Engineering, 2015,23(4): 1146-1152 DOI： 10.3788/OPE.20152304.1146.

摘要

为了动态、实时地测量光电编码器在变速转动情况下的细分误差

提出了一种莫尔条纹信号的非均匀采样分析与处理方法。利用傅里叶级数原理构造了实际情况下的莫尔条纹信号方程

根据编码器在不同转速下的实时采样

揭示了莫尔条纹信号的非均匀采样特征。鉴于信号采样的非均匀性

采用曲线拟合的最小二乘法重构莫尔条纹信号

利用离散傅里叶变换算法分析重构信号并求出波形参数。通过信号参数与细分误差的关系式

测量了编码器动态细分误差。采用该方法对21位绝对式光电编码器莫尔条纹信号进行了分析和处理

两次测试得到其动态细分极值误差为+3.21"、-4.69"和+3.45"、-4.81"。实验结果表明

该方法可以有效地分析和处理编码器在非匀速转动下产生的变频莫尔条纹信号

精确地测量编码器的动态细分误差

为工作现场编码器误差的实时检测与修正奠定了基础。

Abstract

To measure the dynamic real-time interpolation error of an optical encoder in non-uniform rotation

a method for analysis and processing the Morié fringe signals based on non-uniform sampling was presented. The real Morié fringe signal equation was constructed by Fourier series principle. According to real-time sampling on the encoder at different speeds

the characteristics of non-uniform sampling for Moiré signals was revealed. On the basis of the non-uniformity of the signal sampling

the Morié fringe signals were reconstructed by using the least square curve fitting.Reconstructed signals were analysed by Discrete Fourier Transform algorithm and the waveform parameters were obtained. With the relationship between interpolation error and signal parameters

the measurement of encoder dynamic error was achieved. The Moiré fringe signal of a 21 bit absolute optical encoder was analysed and processed and the twice extreme dynamic interpolation errors are +3.21 ";-4.69" and +3.45 ";-4.81"

respectively.Experiment result shows that this method effectively processes Morié fringe signal of variable frequency in the encoder with non-uniform rotation

and accurately measures the dynamic interpolation error of the encoder

which provides foundation for real-time detection and correction of encoder error at the actual work site.

关键词

Keywords

references

熊文卓, 孔智勇, 张炜. 光电轴角编码器光电信号正交性偏差的相量校正方法[J]. 光学精密工程, 2007, 15(11):1745-1748. XIONG W ZH, KONG ZH Y, ZHANG W. Phase correction of quartering deviation of photoelectric rotary encoder[J].Opt. Precision Eng., 2007, 15(11):1745-1748.(in Chinese)

孙莹, 万秋华, 王树洁. 小型光电编码器细分误差补偿系统[J]. 电子测量与仪器学报, 2012, 26(8):699-704. SUN Y, WAN Q H, WANG SH J. Interpolation error compensation system of mini-type photoelectrical encoder [J]. Journal of Electronic Measurement and Instrument, 2012, 26(8):699-704.(in Chinese)

高旭, 万秋华, 赵长海, 等. 莫尔条纹光电信号正交性偏差的实时补偿[J]. 光学精密工程, 2014, 22(1):213-219. GAO X, WAN Q H, ZHAO CH H, et al.. Real-time compensation of orthogonality deviation for Moire fringe photoelectric signal[J]. Opt. Precision Eng., 2014, 22(1):213-219.(in Chinese)

徐从裕. 单变量递推法莫尔条纹信号误差分离算法[J]. 仪器仪表学报, 2012, 33(8):1708-1713. XU C Y.Separation algorithm for Moire fringe signal errors based on single-variable recursive method[J].Chinese Journal of Scientific Instrument, 2012, 33(8):1708-1713.(in Chinese)

万秋华. 莫尔条纹动态细分误差的傅里叶分析评估方法[J]. 电子测量与仪器学报, 2012, 24(6):548-552. WAN Q H. Fourier analysis assessment method for dynamic interpolation error of Moiré fringe[J]. Journal of Electronic Measurement and Instrument, 2012, 24(6):548-552.(in Chinese)

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, 25(2):70-72. LIU H P, FENG CH Y, DING L H.Evaluation of interpolation errors of opticalelectric encoders based on the fitted curves of lissajous[J]. Transducer and Microsystem Technologies, 2006, 25(2):70-72.(in Chinese)

冯英翘, 万秋华. 小型光电编码器细分误差校正方法[J]. 仪器仪表学报, 2013, 31(6): 1374-1379. FENG Y Q, WAN Q H. Interpolation error calibration method of small photoelectric encoders[J].Chinese Journal of Scientific Instrument, 2013, 31(6):1374-1379.(in Chinese)

李洪, 冯长有, 丁林辉. 光电轴角编码器细分误差动态评估方法[J]. 传感技术学报, 2005, 18(4):927-930. LI H, FENG CH Y, DING L H. Dynamic evaluation method for interpolation errors in photoelectric encoder[J]. Chinese Journal of Sensors and Actuators, 2005, 18(4):927-930.(in Chinese)

王显军. 光电轴角编码器细分信号误差及精度分析[J]. 光学精密工程, 2012, 20(2): 379-386. WANG X J.Errors and precision analysis of subdivision signals for photoelectric angle encoders[J]. Opt. Precision Eng., 2012, 20(2):379-386.(in Chinese)

冯英翘, 万秋华, 孙莹, 等. 近似三角波莫尔条纹光电信号的细分误差修正[J]. 光学学报, 2013, 33(8):0812001-1-0812001-5. FENG Y Q, WAN Q H, SUN Y, et al.. Interpolation error correction of Moiré fringe photoelectric signals in the approximate form of triangle wave[J]. Acta Optica Sinica, 2013, 33(8):0812001-1-0812001-5.(in Chinese)

赵长海, 万秋华, 龙科慧, 等. 莫尔条纹信号采集的自适应采样系统[J]. 武汉理工大学学报, 2008, 30(6):143-149. ZHAO CH H, WAN Q H, LONG K H, et al.. Self-adaptive sampling system for Moiré fringe signal[J]. Journal of Wuhan University of Technology, 2008, 30(6):143-149.(in Chinese)

浏览量

610

下载量

CSCD

文章被引用时，请邮件提醒。

提交

工具集

关联资源

双角度编码器超精密转台测角误差校准

莫尔条纹光电信号正交性偏差的实时补偿

八矩阵超小型绝对式光电编码器

光电编码器LED光源准直特性研究

基于莫尔条纹测量扭转变形角的方案研究