Sliding Mode-NDOB Speed Control of IPMSM Based on Improved Reaching Law
The conventional sliding mode control of interior permanent magnet synchronous motor(IPMSM)has some problems,such as serious buffeting,slow response speed and poor anti-disturbance ability.In order to enhance the control performance of IPMSM speed control system,a sliding mode control method based on improved double power reaching law and nonlinear disturbance observer(NDOB)is proposed.The improved double power reaching law has the characteristics of variable speed reaching by introducing the system state variable in the power term,which solves the contradiction between the sliding mode reaching speed and buffeting suppression.To further enhance the system robustness,NDOB is designed,which compensates for the disturbance and further suppresses the system buffeting by reducing the reaching law gain coefficient.The simulation results verify the effectiveness and feasibility of the proposed method.
Interior permanent magnet synchronous motorimproved double power reaching lawnonlinear disturbance observersliding mode control
万方数据
维普
