改进二阶自抗扰控制器在永磁同步电机上的仿真应用

Simulation Application of Improved Second Order ADRC in PMSM

对使用二阶自抗扰(Sencond-order Active Disturbance Rejection Controller,ADRC)控制器的PMSM矢量控制系统而言,当负载转矩变化大时,ESO对负载的估计误差也较高。改进永磁同步电机矢量控制系统的二阶ADRC控制器以提高二阶自抗扰控制器的抗负载扰动能力。通过改进并结合负载转矩观测器到永磁同步电机控制中,在二阶自抗扰控制器中对扰动进行部分补偿,进而提升了二阶自抗扰控制器抗扰动的能力,使得矢量控制系统性能提高。仿真结果同样支持这一结果。

In the vector control system of permanent magnet synchronous motor(PMSM)using second-order active disturbance rejection controller(ADRC),the estimation error of extended state observer(ESO)is larger when the disturbance changes greatly.In order to improve the anti disturbance ability of the second-order ADRC,an improved second-order ADRC scheme for PMSM vector control system is proposed.Through the load torque observer,the disturbance is partially compensated by the load disturbance in the second-order ADRC,which improves the anti disturbance ability of the second-order ADRC and improves the performance of the vector control system.A better anti load disturbance ability has been showed by simulation result.