一种改进的模糊免疫反馈PID控制器

针对P型免疫反馈控制器不能克服动态干扰和消除静态误差的问题,利用模糊控制系统的非线性逼近能力,提出了一种将P型免疫反馈控制器同常规PID控制器进行混合联结的模糊免疫PID控制器的设计方法。该控制器通过免疫反馈控制规律和模糊控制规则在线调整控制器的参数。为了选择一组较优的控制器参数,用免疫算法在全局范围内对控制参数进行离线优化。仿真结果表明,该控制器较常规控制器具有更好的动态、静态特性。

An Improved Fuzzy Immune Feedback PID Controller

To the problems that P-type immunity feedback controller fails to overcome dynamical disturbance and eliminate static error,according to the universal approximation capability of the fuzzy control system,a fuzzy immune PID controller based on mixed connection of conventional PID and P-type immunity feedback controller is put forward.The controller parameters can be adjusted on line by the rules of immune feedback controller and fuzzy controller.In order to gain the optimal controller parameters,the parameters of the controller are offline optimized by immune algorithm.The simulation results show that the control performances of the proposed immune controller are superior to that of conventional controller,and possess better dynamic and static characteristics.