关键词: 永磁同步电机, 自抗扰控制器, 扰动补偿, 调速系统, 扩张状态观测器

Abstract:

In the process of permanent magnet synchronous motor(PMSM) operation, the load torque and the change of the moment of inertia have a great influence on the speed. Combining the active disturbance rejection controller (ADRC) with the method of identifying the load torque and the moment of inertia, the partial disturbance was obtained. The PMSM speed regulation system based on disturbance compensation was designed. Using the identification algorithm to identify the load torque and moment of inertia, and the information which collected was used to identify some of the disturbance items and compensation to the active disturbance rejection controller disturbance estimation output, so that the extended state observer (ESO) only should estimate the residual disturbance .The amount of disturbance observed by ESO was reduced, and the accuracy of the disturbance estimation was increased, thus the disturbance rejection performance of speed loop was improved. The effectiveness of the algorithm is verified by simulation and experiment.

Key words: permanent magnet synchronous motor (PMSM), active disturbance rejection controller (ADRC), disturbance compensation, speed regulation system, extended state observer (ESO)