模糊PID-Smith智能控制器的设计

Design of Fuzzy PID-Smith Controller

针对大滞后的控制系统,研究了模糊PID-Smith智能控制方法.该控制方法将模糊PID与改进型Smith预估控制方案相结合,利用Smith预估算法克服纯滞后,利用模糊PID控制来提高系统的鲁棒性.通过Matlab仿真研究,表明该控制器具有良好的稳定性,对于大时间滞后的系统是一种实用而简便的控制方法.

Based on the control system with pure time delay,a method is studied about fuzzy PID Smith intelligent control.It combines fuzzy PID with improved Smith predictor control method.Smith predictor algorithm compensates for the time delay and fuzzy PID control is used to enhance the robustness of the system.The simulation shows that the new control algorithm has a better characteristic of stability.And it is an appropriate and simple control method for the system with pure time delay.