基于模糊控制的永磁同步电机控制系统研究

永磁同步电机是一个非线性、强耦合的复杂系统,很难对其进行精确的数学建模。然而传统的双闭环PI控制策略研究的是线性时不变的控制问题,不过,这样一种控制方式不能有效地保证系统的正常运行,因此文章采用了模糊PI的控制策略,将模糊控制理论与PID策略相结合,设计了参数自整定模糊PI调节器,以此来取代速度环和电流环上传统的固定增益PI调节器,通过SimuLink仿真证明了模糊PI的可行性。

Permanent Magnet Synchronous Motor(PMSM)is a nonlinear and strong coupling complex system,so it is difficult to model it accurately.However,the traditional double closed-loop PI control strategy studies the linear time-invariant control problem,and such a control method cannot effectively ensure the normal operation of the system.Thus,this paper adopts the fuzzy-PI control strategy,the fuzzy-PI control theory and the PID strategy,there by a parameter self-tuning fuzzy PI regulator is designed to replace the traditional fixed gain PI regulator on the speed loop and current loop.The feasibility of fuzzy PI is proved by Simulink simulation.