The new smc sliding controller design improves speed for permanent magnet synchronous motors

Abstract

Slide mode control (SMC) is one of the current popular control methods. To solve the shortcomings of the constant velocity reaching law (CVRL) when it cannot converge quickly and is affected by external speeds when working, this paper designs a sliding law controller that improves the CVRL control law. First, the authors propose a mathematical model and state of the permanent magnet synchronous motor (PMSM) in the ideal case with the parameters of the PMSM motor. Next, the authors proposed a new control law, NCVRL, and tested the Lyapunov stability of the new control law. The simulation results of the new sliding controller showed that the speed and torque of the system both achieved good performance and had improved convergence. The paper presents the construction of a sliding control system for PMSM motors on Matlab/Simulink software.