摘要
本文通过分析带死区时间的PWM脉冲波形的特点,以及MCS-51单片机定时器的工作机理,提出了一种利用MCS-51单片机一个定时器,来同时控制两路带死区的PWM脉冲信号的新方法,给出了其编程设计思路和具体的理论分析,同时具有程序结构简单、波形可靠性好、占空比调节范围广、响应速度快等优点。
By analyzing characteristics of the PWM pulse with dead-time and the working mechanism of timer of MCS-51, This paper presented a new method of simultaneous control of two channels with dead-time PWM signal based on a single timer of MCS- 51, provided the programming idea and theoretical analysis, and this method has the advantages of simple structure, fast response, wide duty cycle range, waveform stabilization.
出处
《电源世界》
2014年第3期26-28,32,共4页
The World of Power Supply
