biliweifenkongzhi

代码说明：

  各比例微分系数下系统的单位阶跃响应，有扰动曲线，随着微分作用的加强，系统的超调量减小，稳定性极高。(The unit step response of the system with various proportional and differential coefficients has perturbation curve. With the enhancement of differential action, the overshoot of the system decreases and the stability is very high.)