The Design of Sliding Mode Controller of Permanent Magnet Synchronous Servo Motor Based on CMAC

The control strategy of PMSM impact on the performance of the servo system directly. The control to PMSM has always been a research focus. Sliding mode control is superior to conventional PID control on the control performance, sliding mode control can make the system work in the sliding mode surface stably, thus can improve the stability of the system. Sliding mode control has inhibitory effect to the external disturbance and the uncertainty of mechanism dynamics. Neural network has the ability of function approximation and learning ability. Cerebella model articulation controller (CMAC) and sliding mode control based on mathematical model PMSM can control ac permanent magnet synchronous servo motor to track a predefined trajectory. The research reveal that PMSM sliding mode control can track the target trajectory well. And compared with the conventional sliding mode control, PMSM sliding mode control can make the error smaller, and the convergent speed faster obviously.