高精度增量式光电编码器信号处理系统  

High Precision Signal Processing System of Incremental Encoder

作　　者：汪雨冰[1] 王睿[1] 于永江[1] 杨罕[1] WANG Yubing;WANG Rui;YU Yongjiang;YANG han(College of Electronic Science and Engineering,Jilin University,Changchun 130012,China)

机构地区：[1]吉林大学电子科学与工程学院,长春130012

出　　处：《吉林大学学报（信息科学版）》2018年第4期398-402,共5页Journal of Jilin University（Information Science Edition）

基　　金：吉林省高等教育教学改革重点基金资助项目(2017XZD009);吉林大学实验技术基金资助项目(409020720029)

摘　　要：为提高增量式光电编码器的输出精度,减小信号处理电路复杂度,提高伺服控制系统的稳定性,研制了一种单圈输出32 400周期方波信号的高精度增量式光电编码器。该编码器外径为90 mm,码盘一周刻划3 240线,数据处理系统可完成对莫尔条纹信号的40倍准确细分。实验结果表明,此编码器输出信号精度正交性偏差小于15%,均匀性偏差小于20%,大幅减小了应用增量式编码器时伺服系统的抖动。In order to improve the precision of the incremental photoelectric encoder,reduce the complexity of the signal processing circuit and improve the stability of the servo control system,a high precision incremental encoder with a single loop output of 32 400 periodic square wave signals is developed. The encoder has an outer diameter of 90 mm,and the encoder has 3 240 lines. The data processing system completes 40 times accurate segmentation of Moiré fringe signals. Experiment result shows that the orthogonality deviation is less than 15% and the uniformity deviation is less than 20%,which greatly reduces the jitter of the servo system when the incremental encoder is applied.

关 键 词：增量编码器 精度 倍频细分 莫尔条纹 

分 类 号：TP21[自动化与计算机技术—检测技术与自动化装置]