一种解耦模糊PID控制器研究与仿真

Research and Simulation on A Decoupled Fuzzy PID Controller

针对线性控制系统中因环境变化引起被控对象参数改变或者因干扰作用使系统出现非线性,而引起系统控制性能变差的现象,提出一种解耦模糊PID控制器的方法来改善系统的性能。通过对线性随动控制系统的仿真可见,不论是在被控对象参数改变还是出现随机干扰的情况下均能获得较好动态性能指标。解耦模糊控制的模糊语言规则少,响应速度较快。

A Decoupled Fuzzy laiD Controller is developed to improve the qualities of the linear control system when the system＇s performance weakens because the parameters of the controlled subject is changed due to the environmental variations and the linear system become the nonlinear system due to the effects of interference. It is obvious that a better system＇s dynamic response function can be obtained through the simulation of linear random control system, whether a change arises from the variations of the parameters of the controlled .subject or random interferences. In addition, there are fewer rules in the fuzzy language of the decoupled fuzzy PID controller and it is faster to respond.