基于CPLD的编码器信号处理电路设计

基于CPLD芯片,对增量式编码器输出信号进行处理,实现了编码器信号的整形滤波、倍频和鉴相。为了提高编码器的测量精度,设计了一种4倍频脉冲输出电路,提高了编码器的分辨率,并设计了鉴相电路,实现正反向的角度或速度测量。文中给出了Quartus原理图输入电路、时序仿真结果,以及试验测试结果。文中的研究在角度位移等测量领域有着广泛应用价值。

Circuit Design of Encoder Signal Processing Based on CPLD

This paper introduced a method based on CPLD chip of ALTERA company which dealed with the output signal of incremental encoder and achieved filtering,frequency doubling and phase discriminating of the signal.We designed a 4 frequency multiplication pulse output circuit which improved the accuracy of the encoder measurement.The circuit of phase discrimination can accomplish the positive and the negative measurement of angle or speed.This paper also provided the Quartus schematic of block diagram,timing simulation picture,and the results of experimental test.This research can be used to measure angle,displacement and so on,it has wide application value in the measurement field.