关键词: 永磁同步电机, 参数变化, 自适应控制

Abstract: Aiming at the current and speed control problems caused by the parameter changes of permanent magnet synchronous motor, an adaptive control strategy based on backstepping method was designed. The mathematical model of permanent magnet synchronous motor under parameter changes was established. The current adaptive controller and speed adaptive controller were designed respectively by backstepping method to improve the robustness of the system to parameter changes. The superiority of the proposed method in dynamic performance and system stability was verified by comparative experiments with traditional cascade PID control.

Key words: permanent magnet synchronous motor( PMSM), parameter change, adaptive control