Modeling and simulation of multi-motor synchronous control system based on slide mode controller

Abstract

With the expansion of industrial manufacturing, a single motor is difficult to meet the needs of production, synchronous operation mode of multiple motors has been widely used in industry and production. This article takes four permanent magnet synchronous motors as the research object and adopts SVPWM control technology as the inner loop to achieve steady-state operation of every motor. The outer loop adopts conventional PI controller and sliding mode controller (SMC) to realize synchronous operation of four motors respectively. Based on the Matlab/Simulink platform the simulation model of the synchronous motor control system is designed. The deviation coupling synchronization control strategy of four motors under different speed outer loop control modes is studied. Through the load torque mutation experiments, the anti-disturbance ability and rapidity of the two controllers are compared. Simulation experiment results show that the multi-motor synchronous control system based on sliding mode controller still has good speed tracking performance under large load torque sudden changes.