光电轴角编码器细分误差动态评估方法  

Dynamic Evaluation Method for Interpolation Errors in Photoelectric Encoder

作　　者：李洪[1] 冯长有[1] 丁林辉[1] 

机构地区：[1]中国科学院长春光学精密机械与物理研究所

出　　处：《传感技术学报》2005年第4期927-930,共4页Chinese Journal of Sensors and Actuators

基　　金：国防军工技改项目资助(C02S04S)

摘　　要：介绍了一种光电轴角编码器细分误差动态评估的方法。光电轴角编码器匀速转动时,采集相位差为π/2的两路精码正弦光电信号,然后对采集到的光电信号进行等转角数据处理及谐波分析,从而求出光电信号波形参数,波形参数确定后可以建立波形方程。再将波形方程代入到细分误差的计算公式求出细分误差。试验结果表明,该方法是有效的。A dynamic evaluation method of interpolation errors in photoeletric encoder is described. While the photoeletric encoder is uniform motion, the data acquisition card samplings two photoeletric signal with a phase differece of π/2, then the two signals are processed to be equiangular data and harmonic analysis to calculate the waveform parameters of signal equations. Finally, the signal waveform equations are put into the interpolation error equations to make out the interpolation errors. Experimental results show that the method is effective.

关 键 词：光电信号 细分误差 等转角处理 谐波分析 

分 类 号：TP212.12[自动化与计算机技术—检测技术与自动化装置] TN762[自动化与计算机技术—控制科学与工程]