Research on Sliding Mode Control of Permanent Magnet Synchronous Drive Motor

In order to improve the control performance of the continuous-wave mud pulser drive motor speed control system and enhance its robustness, this paper proposes an improved variable exponential reaching law. It does not add new parameters on the basis of the traditional reaching law, but achieves better chattering reduction and disturbance rejection. Its feasibility has proved theoretically in this paper. In order to further verify the superiority of the improved variable exponential reaching law, a speed loop sliding mode controller was designed and simulated based on it. Through the comparison of simulation results, the speed loop sliding mode controller designed based on the reaching law proposed in this paper can effectively improve response speed, disturbance rejection performance of the motor speed control system and reduce chattering.