本文叙述应用脉冲测速发电机检测速度的直流电动机用的数字速度控制系统。应用微处理机进行快测速,其响应时间常数为8毫秒数量级,分辨率为最高速度的0.0125％。这些所以成为可能是因为它是根据前速度值来获得最新速度值的原理。本文叙述了测速和控制的原理、流程和试验结果。已达到了闭环速度保持精度为最高速度的±0.025％。 This article describes a digital speed control system for a DC motor that uses a pulse tachogenerator to detect speed. Microprocessor-based rapid test speed, the response time constant of the order of magnitude of 8 milliseconds, the resolution of the maximum speed of 0.0125%. These are so possible because it is based on the principle of getting the latest speed value from the previous speed value. This paper describes the principle of speed and control, flow and test results. Closed Loop Speed ​​Reached ± 0.025% of Top Speed.