摘  要：利用FPGA可编程芯片及Verilog HDL[1]语言实现了对直流电机PWM控制器的设计，对直流电机速度进行控制。介绍了用Verilog HDL语言编程实现直流电机PWM控制器的PWM产生模块、串口通信模块、转向调节模块等功能，该系统无须外接D/A转换器及模拟比较器，结构简单，控制精度高,有广泛的应用前景。同时，控制系统中引入上位机控制功能，可方便对电机进行远程控制。
关键词：FPGA；串口通信；PWM；直流电机；实验

Abstract: A new design of DC motor PWM controller based on FPGA and Verilog HDL was presented to control the speed of DC motor.The PWM create module,the serial communication module and the steering unit have been implemented in an chip.With the characteristics of simple structure,precise control and no exterior DAC.The new control system can be widely used.And the computer station control is introduced.
Key Words: Field programmable gate array;Serial communication;PWM;DC motor;Experiment