PWM控制器的控制方法

The Control Method for PWM Controller

总结了脉宽调制 (PWM)技术的几种控制方法 ,叙述了它们的基本工作原理 ,并分析了它们的优缺点。介绍一种非线性控制方法 ,单周控制法 ,通过分析对比得出单周控制法能在每个周期内消除控制参考电压与开关变量平均值间的稳态和瞬态误差 ,具有反应快、抗电源干扰。

This paper summarizes several methods of Pulse Width Modulation (PWM) , illustrates their basic principles and points out their advantages and disadvantages. One cycle control, a nonlinear conrol technique, is introduced. Compared with other methods, its strongpoints can been seen. One Cycle Control responds rapidly, rejects power source perturbations, eliminates the steady state error and dynamic error between the control reference and the average value of the switched variable in each cycle. It's control circuit is simple.