预测控制模式自切换的永磁同步电机位置控制方法

Position control method of permanent magnet synchronousmotor with self-switching predictive control mode

针对传统单一位置控制模式难以满足高性能位置控制系统要求的问题,提出预测控制模式自切换的永磁同步电机位置控制方法。首先对预测电流控制模式、预测转速控制模式及预测位置控制模式分别进行研究,分析比较3种控制模式的特点,然后根据电机位置控制运动特点,将位置控制过程划分为4个阶段,并在不同运行阶段采用相应控制模式。对不同运行阶段和控制模式的切换点进行了选取,并提出相应的平滑自切换方法,最终实现预测控制模式自切换的位置控制方法。最后将所提方法与传统位置控制方法进行试验对比,证明了所提方法在动态响应速度和稳态控制性能方面均具有优越性。

For the problem that the traditional single position control mode is difficult to meet the requirements of high-performance position control,this paper proposes a predictive control mode self-switching method for permanent magnet synchronous motor position control.This paper firstly studied the predictive current control mode,predictive speed control mode and predictive position control mode,analyzed and compared the characteristics of these three control modes,and then divided the position control process into four stages according to the motor control objectives,and adopted corresponding control methods in different operating stages.It also proposed a smooth self-switching method of control mode based on the selection of different switching points,and finally realized a position control method with predictive control mode self-switching.Finally,coparative experiments of proposed method and traditional methods were conducted to verify the effectiveness and superiority of proposed method in aspects of both dynamic performance and steady-state performance.