基于单片机的直流电机调速系统设计与仿真

The Design and Emulation of Speed Control System for DC Motor Based on Single Chip Microcomputer

为实现灵活而简单的直流电动机转速数字化调节,设计了以AT89C51单片机为核心的PWM调速系统和基于NE555和数字门电路的转速脉冲计数显示器,并在Proteus软件环境下进行了仿真。仿真中,电机的转速可通过按键进行增减调节,仿真的显示计数范围为0～999r/min。

For the sake of actualizing flexible simple digital speed control for DC motor,a PWM speed control system based on AT89C51,as well as a speed pulses counter and displayer based on NE555 and other digital circuits,was designed in this paper.The system has been emulated in Proteus.During the emulation,the speed of the motor could be increased or decreased,and the RPM speed could be realtime displayed within the range for 0 to 999.