遗传算法在PID自适应控制中的应用

Application of Genetic Algorithm to PID Self-adaptive Control System

提出一种基于遗传算法的PID自适应控制结构,给出控制结构框架,利用遗传算法来优化PID参数,本文利用遗传算法的全局寻优的特点,将它应用于PID参数的寻优计算,从而提高PID控制器的控制性能和自适应能力。仿真的结果表明,笔者提出的遗传算法和PID控制相结合的控制方法鲁棒性强,控制品质优良,在很大程度上改善了常规PID控制器的控制性能。

A problem often stands out in condition that the models of controlled objects aren＇ t accuracy and have nonlinear property. So, in this paper, a new kind of PID self-adaptive controlling structure based on genetic algorithm is presented. The scheme of controlling structure is showed,and genetic algorithm is used to optimize PID parameters. Result of simulation showed that the robust and controlling property of this method are perfect, moreover, the controlling property of PID regulator is improved greatly.