An improved approach law for PMSM non-singular terminal sliding mode control
In order to improve the response speed and robustness of permanent magnet synchronous motor(PMSM)servo control system,a control method based on terminal sliding mode is proposed in this paper.Firstly,the convergence of traditional sliding mode surface is analyzed,and the non-singular terminal sliding mode surface is introduced.Secondly,a new approach law is proposed on the basis of the traditional approach law,and a current-speed controller based on the new approach law is designed.Finally,a sliding mode observer is designed to compensate the disturbance and observe the speed of the motor.The new control algorithm proposed has been demonstrated through software simulation and experimental verification to effectively suppress the oscillation issue of the permanent magnet synchronous motor when approaching the equilibrium point,and it has a lower overshoot,good disturbance rejection capability,and faster response speed,confirming the feasibility and effectiveness of the proposed method.
万方数据
维普
