异步电动机矢量控制系统Fuzzy-PI控制器的设计

Design of fuzzy-Pi controller in vector control system of asvnchronous motor

针对异步电动机动态数学模型的非线性特性,提出并设计了兰个Fuzzy -PI复合控制器,分别对直接矢量控制系统中的速度,转矩和磁链进行控制。最后利用Matlab软件对系统进行了仿真研究。仿真结果表明:Fuzzy -PI复合控制器具有良好的控制效果,优于一般模糊控制器和PI控制器,能够改善系统的动态和静态性能。

According to the nonlinear characteristic of Asynchronous Motor's dynamic mathematic model, three Fuzzy-Pi controllers are presented and designed to control the velocity, torque and flux linkage in the direct vector control system. Simulation research of the system is done by using the Matlab software at last. The results of simulation prove that the Fuzzy-Pi controllers have good performanc es, the effect is better than that of usual fuzzy controller and PI controller and can improve the dynamic and static capability.