典型非线性系统的PWM控制研究

摘要

分析了死区、饱和、滞环、摩擦等典型非线性环节在PWM信号控制时的合成特性,得出了在一定条件下,这些典型非线性环节在PWM信号输入时,其输出信号的相位与输入信号一致,仅仅是幅值发生变化,等效于一个比例环节的结论,仿真结果验证了所提出方法的有效性。%Aiming at the composite character of classic nonlinear links such as dead-zone, kysteresis, saturation and friction within the PWM system, phase of the output signal is agreeable with phase of the input signal when PWM is inputted into classic nonlinear links. It is nothing more but the amplitude change. The simulation results show the method is effective.