基于表贴式永磁同步电机模型改进的自抗扰控制器

Improved Active Disturbance Rejection Controller Based on Surface-mounted Permanent-magnet Synchronous Motor Model Identification

在使用自抗扰(Active Disturbance Rejection Controller,ADRC)控制器的表贴式永磁同步电机(Surface Permanent Magnet Synchronous Motor,SPMSM)系统中,电流环依然存在耦合现象,扩张状态观测器(Extended State Observer,ESO)对于变化较大的扰动难以保证对其的估计精度。为了提高负载的动态性能,提出了改进的自抗扰控制器设计方案。基于表贴式永磁同步电机模型,利用最小二乘算法辨识出电流环参数,对电流环模型进行补偿,实现电流环的精确解耦,减小ESO对扰动估计的压力,提高扰动估计精度。仿真结果表明,改进的自抗扰控制器提高了负载的动态性能。

In the surface-mounted permanet magnetic synchronous motor（SPMSM） system controI ed by active disturbance rejection controI er （ADRC）,the current Ioop coupIed phenomenon stiI exists,it is difficuIt to ensure the estimation precision of disturbance by extended state observer （ESO）in the case of big disturbance.In order to improve the controI performance of ADRC,the improved ADRC is present in this paper.Based on SPMSM modeI identification by using Ieast square method, make compensation to decrease the pressure of estimation disturbance of ESO.