基于ADRC和反步法的PMSM位置控制系统

Research of PMSM Position Control System Based on ADRC and BSC

针对永磁同步电机位置控制系统追求定位的快速性、准确性和无超调的目标要求,按照双环结构的理念设计了一种新颖的三环位置控制系统。采用一阶系统的自抗扰控制策略构成位置外环控制器得到期望的转速信号,采用反步法构成速度环、电流环控制器得到系统的实际控制ud、uq,通过自适应方法估计负载的变化,由此增强了系统的鲁棒性,保证了速度控制精度。针对三环位置控制系统,通过仿真验证控制策略的有效性。

To ensure rapidity,accuracy,non-overshoot in the PMSM position control system,the three-loop position control system was designed in accordance with the dual-loop system.The active disturbance rejection control strategy of the first-order system was adopted to construct a position of outer loop in order to achieve ω＊r,and the adaptive back stepping method was used to construct the three loop system of velocity loop and current loop in order to achieve ud、uq.After that,the change of load was estimated by the adaptive method.The result shows that the robustness is improved and the accuracy of speed control is ensured.For the three loop position servo system,simulation is given to show the effectiveness of the proposed control strategies.