模糊PID控制器及其在电力系统中的应用

FUZZY PID CONTROLLER AND ITS APPLICATION TO POWER SYSTEM

提出一种以模糊控制理论和传统的ＰＩＤ控制器为基础的新的自适应ＰＩＤ控制算法．该方法首先通过Ｚｉｅｇｌｅｒ－Ｎｉｃｈｏｌｓ经验公式得到一组ＰＩＤ控制参数，然后在系统运行过程中通过检测偏差和偏差变化率确定最佳的控制器参数，以提高闭环系统的动态和静态性能．该方法易用微机实现。

A new adaptive PID control algorithm based on fuzzy control theory and classical PID controller is presented.A set of PID controller parameters are obtained by Ziegler Nichols formula.Then,the optimal controller parameters are determined by examing the errors and change rate of errors in operation to improve performances of the transient and steady of the closed loop system.The method is easily used by microcomputers and several experimental results in power system illustrate the offective improvements achieved.