以天煌THGMW-151/96/8088三合一系统为实验平台,开发了一种以单片机为核心,以8255并行接口及DAC0832为外围的直流电动机调速电路。通过单片机编程实现直流电机转速定时采集和分析,以达到直流电动机稳速、调速的模糊控制。经软硬件实验结果表明,该系统完全达到直流电动机调速、稳速目的。 Taking Tianhuang THGMW-151/96/8088 three-in-one system as the experimental platform, a DC motor speed control circuit with a single-chip microcomputer as the core, an 8255 parallel interface and a DAC0832 as its periphery was developed. Through the SCM programming DC motor speed timing acquisition and analysis, in order to achieve DC motor speed, speed control of fuzzy control. The hardware and software experimental results show that the system fully meet the DC motor speed, steady speed purpose.