基于分数阶动态滑模自抗扰的PMSM调速控制OA

[Objective]To address the issues of low control precision,slow convergence,and strong chattering in permanent magnet synchronous motor(PMSM)under rapid acceleration/deceleration and load changes,this paper proposes a fractional-order dynamic boundary layer super-twisting sliding mode active disturbance rejection control(FO-DBL-STSM-ADRC)strategy.[Methods]Firstly,the ADRC was integrated with the STSMC algorithm to enhance adaptability under complex operating conditions.Next,a novel DBL sliding mode surface was designed,which dynamically adjusted the boundary layer structure to improve the system's dynamic response speed and load disturbance rejection capability.Then,fractional-order calculus was introduced to effectively suppress the inherent high-frequency chattering of traditional sliding mode control,significantly enhancing the system's ability to inhibit steady-state errors and chattering.Finally,the superiority and robustness of the proposed FO-DBL-STSM-ADRC strategy were verified through simulation and experiment under various complex operating conditions.[Results]The simulation and experiment results showed that,compared to the other three strategies,the proposed FO-DBL-STSM-ADRC strategy demonstrated significant advantages in terms of response speed,steady-state control precision,load disturbance rejection capability,and overall system robustness.[Conclusion]The proposed FO-DBL-STSM-ADRC strategy not only provides an effective solution for the high-performance operation of PMSM,but also offers technical support for demanding engineering applications such as electric vehicle drives and rail transit door control systems.