Phase Stabilization Based Robust Controller Sesign for Voice Coil Motors
A phase-stable robust controller design method is proposed to address the issues of traditional gain-stabilized design methods being unable to suppress input interference and having poor robustness.First-ly,the second phase margin is introduced to design the phase-stabilized controller.Secondly,to ensure the robust performance of the system after the model parameters are ingested,a method is given to optimize the controller parameters according to the robust performance condition.Finally,the effectiveness of the pro-posed strategy is verified by simulation,and the results show that the designed controller can effectively suppress the input disturbances and meet the robust performance requirements of the ingestion system.