基于FPGA的增量式编码器误差自动检测系统  

Automatic Detection System of Error for Incremental Encoder Based on FPGA

作　　者：刘小树 万秋华[1] 杨守旺[1] 卢新然[1] 孙莹[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,吉林长春130033 [2]中国科学院大学,北京100049

出　　处：《仪表技术与传感器》2017年第2期62-65,共4页Instrument Technique and Sensor

基　　金：中国科学院知识创新工程领域前沿项目(070Y32R070)

摘　　要：为提高增量式编码器检测精度和效率,实现增量式编码器的自动检测,设计一种基于FPGA的增量式光电编码器自动检测系统,该检测系统能够快速地检测出被检增量式光电编码器的均匀性和正交性误差。首先,利用无刷直流电机带动被检增量式编码器匀速转动;其次,利用FPGA构成高速数据采集系统,自动采集被检编码器的相关数据,并计算出均匀性与正交性误差;最后,通过LCD液晶显示屏显示检测结果。实验结果表明:该检测系统可以准确地检测出分辨力为40″的增量式编码器误差。To increase the accuracy and the efficiency of incremental encoder detection,and achieve auto-detection of incremental encoder,an auto-detection system of incremental encoder based on FPGA was designed,which is fast in detecting the uniformity and orthogonality of incremental encoders.Firstly,the measured incremental encoder was rotated constantly by using brushless DC motor.Secondly,high-speed data acquisition and processing system was designed with FPGA,it collected data about the measured incremental encoder and computed the error of uniformity and orthogonality.Lastly,the results were displayed on the liquid-crystal screen.Experimental results show that the system is capable to detect error for incremental encoder of resolution of40″ accurately.

关 键 词：增量式编码器 现场可编程门阵列 误差 自动检测 

分 类 号：TP212[自动化与计算机技术—检测技术与自动化装置]