A approaching law sliding mode controller for PMSM vector control way

Application of sliding mode control(abbreviated as SMC) in speed control of permanent magnet synchronous motor (abbreviated as PMSM); This study was completed from both theoretical and practical perspectives using literature research and simulation experiment analysis; The speed control of PMSM, based on SMC deals with the external interference problem that exists in the operation of nonlinear servo system. This problem has strong instability, which has a significant impact on the operating state of PMSM. By using the principle of SMC and the exponential convergence law to design a sliding mode controller, the effectiveness of the proposed research was verified in corresponding simulation experiments. The designed sliding mode controller improved the resistance to interference when applied to PMSM, resulting in strong robustness of the operating system and reducing system overshoot and error; Based on sliding mode control, PMSM exhibit strong control capabilities in speed control, which can improve the safety and stability of PMSM, increase their service life, and further improve equipment production efficiency and safety.