In order to improve the dynamic performance and position tracking accuracy of permanent magnet synchronous linear motor (PMSLM) control system, a variable gain cross-coupling control system of PMSM based on model prediction algorithm was proposed. Firstly, the motion equation of permanent magnet synchronous linear motor is discretized to design the model to predict the integrated controller of velocity and current. In order to improve the contour precision of biaxial PMSM system, a variable gain cross-coupling control algorithm was introduced to enhance the matching degree of biaxial PMSM system. The model prediction velocity and current integrated controller and the variable gain cross-coupling controller were added into the dual-axis PMSM in the Matlab/Simulink simulation software to verify the stability and accuracy of the proposed control algorithm in the dual-axis system. It is verified that the proposed control strategy can accurately track the given position, maintain the stability of the speed, and make the system have a small contour error.

Permanent magnet synchronous linear motor， Biaxial system， Model predictive control， Variable gain cross-coupling control