说明这是一个利用单片机进行脉宽调制(PWM) 直流电机调速测试程序，UNL2003提供电机驱动电流，使用六个按键实现六种不同速度-This is the use of a single-chip pulse width modulation (PWM) DC motor speed control testing procedures, UNL2003 motor drive current, using the six key six different speeds

PWM电流型逆变器仿真Matlab，SHE方法调制-PWM current source inverter Matlab simulation