时变大滞后系统的模糊免疫PID控制

工业中的大多数生产系统都是时变和滞后系统。对于这类系统,普通的PID控制器难以获得满意的控制效果。而采用模糊PID控制能降低系统的超调量,提高系统的响应速度。为了提高模糊PID控制器的控制性能,将模糊参数自整定调节方法与免疫进化算法相结合,设计了一种模糊免疫参数自整定PID控制系统。对于时变大滞后系统,模糊免疫参数自整定PID控制能明显减小系统的超调量,加快系统的响应速度。

Fuzzy immune PID control of time-varying and large delay system

Many industrial production systems are time-varying and delay system. For this kind of system, the ordinary PID controller is difficult to obtain satisfactory control. Fuzzy PID control can reduce the overshoot of system and improve the system’s response speed. In order to improve the control performance of the fuzzy PID controller, we combine fuzzy self-tuning parameter adjusting method with immune evolutionary algorithm to design a fuzzy immune parameter self-tuning PID control system. For time-varying and large delay system, the fuzzy immune parameter self-tuning PID control can significantly reduce the overshoot and accelerate the response speed of the system.