Model-Free Generalized Predictive Current Control for Permanent Magnet Synchronous Motor Based on Sliding Mode Observer
摘要
As one of the conventional Model Predictive Control (MPC) methodologies, Generalized Predictive Control (GPC) displays a significant dependency on the motor model, necessitating the real-time acquisition of precise motor parameters. To address this challenge, this study introduces an innovative ultra-local incremental model for the Permanent Magnet Synchronous Motor (PMSM). Moreover, a sliding mode observer (SMO) is deployed to enable real-time updating of the unknown variable, thereby reducing predicted current errors. Notably, the proposed model features only one unknown variable, eliminating the need for additional parameter information and showcasing remarkable parameter robustness. Furthermore, by treating parameters incorporating inductance details as controlled variables rather than fixed values with linear magnetization characteristics, this approach effectively mitigates nonlinear disturbances within the system. Subsequently, experimental results substantiate the efficacy and disturbance rejection capabilities of this novel strategy.