Abstract
This paper investigates the speed control of Permanent Magnet Synchronous Motor (PMSM). Firstly, addressing the issue that traditional sliding mode control (CSMC) can only achieve asymptotic convergence in an infinite domain, and the coupling problem between the convergence time and control parameters depth in fixed-time sliding mode control (FSMC), a type of integral pre-defined time convergence sliding mode controller (IPSMC) is proposed for PMSM speed regulation, with disturbance compensation using a Luenberger Disturbance Observer (LDOB). Secondly, based on Lyapunov stability theory, the stability of the system is proved, and the effectiveness of the proposed scheme is established. Finally, simulation results demonstrate that the proposed method can effectively enhance the dynamic performance and robustness of the PMSM speed control system.
