本文介绍了一个具有脉冲测速传感器的直流电机数字速度控制系统。采用一台微处理机进行快速速度测量,响应时间为8ms,速度分辨率为最大速度的0.0125%,采用用前时刻的速度值求现时刻速度值的原理可以实现精度要求。本文还介绍了该系统速度测量和控制的原理、框图及实验结果。从而获得了一个保持精度为最大速度的±0.025%的闭环速度控制系统。 This article describes a digital speed control system for DC motors with pulse velocity sensors. Using a microprocessor for fast speed measurement, the response time of 8ms, the speed resolution of 0.0125% of the maximum speed, using the time before the speed value of the present moment speed value principle can achieve the accuracy requirements. This article also introduced the system speed measurement and control principle, block diagram and experimental results. This results in a closed-loop speed control system that maintains ± 0.025% accuracy at maximum speed.