In response to the poor anti-interference capability and delay issues in the vector control system of permanent magnet synchronous motors,a self-disturbance control strategy based on the Smith predictor has been designed.This strategy first compensates for the delay effects induced by the digital controller and inverter using the predictor,then replaces the traditional PI controller with an improved self-disturbance controller.Simulation results demonstrate that this strategy enhances the motor speed and current resistance to interference compared to traditional methods,effectively mitigating the impact of delay and improving the system's robustness against parameter mismatch.This,in turn,contributes to enhancing the performance of the digital control system for permanent magnet synchronous motors.
维普
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