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Nonlinear Generalized Predictive Control of Permanent Magnet Synchronous Motor Based on Extended State Observer

In order to improve robustness of permanent magnet synchronous motor (PMSM) servo system, a nonlinear generalized predictive control (NGPC) strategy based on extended state observer (ESO) is proposed. According to the NGPC theory, a NGPC controller is designed by using the continuous-time model of PMSM. In the case of the parameter variations and external load disturbance in the actual motor system, an ESO based on inverse hyperbolic sine function is introduced to estimate the total disturbance of the system and compensate dynamically in real time. The simulation results show that the proposed control strategy has good dynamic performance and strong robustness, providing an effective approach for engineering implementation.