Novel Approach Rate Anti-jamming Sliding Mode Control Strategy for Permanent Magnet Synchronous Motor
In order to optimize the dynamic performance of permanent magnet synchronous motor(PMSM)speed control system,a novel anti-interference sliding mode control strategy is proposed.Firstly,a new sliding mode approach rate is proposed.Based on the traditional exponential approach rate,the constant velocity term is changed into time variable,and the state variable of the system and the power term of the sliding mode surface function are introduced,which can not only effectively suppress the system chattering,but also improve the approach speed of the system to the sliding mode surface.Based on the new approach rate,a sliding mode speed controller for permanent magnet synchronous motor is proposed.Then,an improved anti-interference sliding mode control method is proposed to solve the high frequency buffeting caused by high switching gain.In this method,an extended state observer is introduced to observe the concentrated disturbance,and the observed value is feed-forward compensated to the sliding mode control,which improves the robustness of the system.Finally,simulation and results verify the effectiveness of the proposed control strategy.
万方数据
维普
