基于自抗扰控制的永磁同步电动机滑模控制调速系统

摘要

为提高永磁同步电动机调速系统的鲁棒性,采用自抗扰控制和滑模变结构控制策略,提出了一种新颖的永磁同步电动机双闭环调速系统.外环速度调节由带扩张状态观测器(ES0)的滑模控制器生成期望的q轴电流,内环电流调节由自抗扰控制器生成d-q旋转坐标系下的两个电压分量ud和uq,削弱了抖动现象,增强了抗扰能力.仿真试验结果表明,系统的速度响应较快,稳态误差小,无超调,能有效地抑制参数变化和负载扰动带来的影响,提高了控制系统动态性能和鲁棒性.%In order to improve the robustness of the PMSM drive system, a novel double loop speed modulation system for the permanent magnet synchronous motor was proposed based on active disturbance rejection control(ADRC) and sliding mode control.The outer loop control was employed by sliding mode controller to determine anticipant q axis current based on extended state observer(ESO).In the inner loop,ADRC was designed to produce ud and uq ,reducing chatting as well as enhancing interference rejection ability.Simulation results show that the system has advantages of speedy response, no overshoot, strong robustness against parameter variations and load disturbance, high accuracy and satisfactory performance.