设计了小型光电编码器自动检测系统, 用于准确快速地检测小型光电轴角编码器的误差。采用21位高精度光电编码器作为角度基准来检测低精度的小型光电编码器。用控制系统转动编码器, 此时高精度编码器与被检编码器之差即为小型编码器在该位置的误差。检测完毕, 根据需要将编码器的误差通过USB接口传输给上位机保存并进行深度分析。采用该系统检测某型号的15位编码器, 得到的均方差为291″, 而传统方法检测的误差均方差为285″, 表明设计的检测系统满足检测精度要求。

An automatic detection system was designed to quickly and accurately detect the precision of a miniature photoelectric encoder. A 21 bit high precision photoelectric encoder was used as the reference to detect the low precision miniature photoelectric encoder. The control system was taken to rotate the encoder first, and the difference of the high precision encoder and the miniature encoder was the error of the miniature encoder. After the testing was completed, the errors of encoder were transmitted to the host computer through the USB interface to save and to perform an in-depth analysis. A 15-bit encoder was detected by using the system, the mean square deviation of the encoder is 291 s, however the mean square deviation of the encoder is 285 s when the detection is done by the traditional methods. Obtained results meet the accuracy requirements.