Optimal parameter for permanent magnet linear servo system using load disturbance compensation

In order to meet the high-precision positioning requirements of permanent magnet linear synchronous motor (PMLSM) servo system, a disturbance compensation method of position controller with optimal parameter disturbance compensating controller is proposed. It ensures that the system has a good transient response and a good load disturbance rejection capability. The position controller enhances the tracking performance. The load compensator is a proportional-integral compensator that reduces the influences of the load disturbance. And by using the parseval theorem, its parameters are obtained from an optimization technique that transformed the position deviation amount of performance into the time domain frequency domain performance, and then calculates Rolls - Hurwitz two-dimensional array. The simulation and experimental results show that the proposed compensation method enhances control precision and robustness of the system.