基于模糊控制理论的PID控制器参数的确定方法

Determination of the PID controller based on fuzzy control theory

为了改善PID控制器参数设定的不确定性,提高PID控制器参数设置的快速性和准确性,提出一种基于模糊控制理论的PID控制器参数的确定方法。此方法采用齐格勒-尼克尔斯第一法确定PID控制器参数的初值,再通过对控制系统响应速度和精度的变化情况,运用模糊控制理论实现对PID控制器参数的修正,从而得到满足控制要求的PID控制器参数。仿真结果表明:该方法可以有效迅速地确定Kp、Ki、Kd三个参数,实现PID控制器参数的智能控制,验证了该控制方法的有效性和可靠性。

In order to improve the inaccuracy of the PID controller parameters when setting,to improve the speed and accuracy,raises a theory of determination the PID controller based on fuzzy control theory.The first method of Ziegler-Nichols is applied to determine the initial value of PID controller.And through the speed and accuracy changes of the control system response curve,using the fuzzy control theory,it can amend the initial value of PID controller.Then the PID controller parameters are obtained which can meet the control requirements.The simulation results show that：this method can quickly determine the parameters of Kp,Ki,Kd;the intelligent control of the PID controller parameters are achieved.The validity and reliability of this determination method is verified.