永磁同步电动机中混沌运动的滑模控制

针对永磁同步电动机(permanent magnet synchronous motor,PMSM)在某些参数及工作条件下会出现混沌运动,从而危及电机传动系统稳定运行的问题,结合滑模控制原理,提出了基于非线性反馈的滑模控制消除PMSM混沌的方法。该方法以PMSM直轴和交轴电压为反馈控制量,可以将电机状态稳定在任意给定值。该方法是渐进稳定的,克服了电机混沌控制中控制目标为周期点或平衡点的缺点。仿真结果表明了理论分析的正确性和控制方法的有效性。

Sliding mode control of chaotic motion in permanent magnet synchronous motor

Under certain parameters and working conditions,chaos appears in PMSM which will destroy the stability of motor drive systems.To solve this problem a method is proposed on the basis of non-linear feedback by utilizing sliding mode control to eliminate PMSM chaos.This method takes the voltages of straight-axis and quadrature-axis as feedback control variables,which can steady the motor state at any given value.The proposed method is progressively stable;it overcomes the weaknesses that the control objective is a periodic point or balance point in the chaotic control of motors.Simulation results show that theoretical analysis is proper and the proposed control method is effective.