Non-Smooth Control Of Pmsm Position Servo System Based On Model Compensation

In order to improve the control performance of permanent magnet synchronous motor (PMSM) servo system, a non-smooth control strategy based on model compensation is proposed. According to the non-smooth theory and the disturbance analysis of the position loop, a non-smooth controller is designed to make the position error of the closed-loop system converges into a small region in finite time. The model identification compensation technology is combined with the non-smooth control strategy. Partially model of the PMSM is identified and is employed to compensate disturbance partially to improve the accuracy of the disturbance estimation. The simulation and experimental results show that the proposed control strategy not only has a faster convergence speed of the position error, but also has stronger anti-disturbance ability.