基于L2增益的永磁同步电动机无速度传感器的自抗扰控制

ADRC of PMSM Speed Sensorless Based on L2-Gain Disturbance Attenuation

针对面装式永磁同步电机转速调节问题,提出了一种新颖的调速系统。利用L2增益干扰抑制理论设计了鲁棒速度控制器,使得控制器能够满足干扰抑制和子系统的渐进稳定;利用自抗扰控制技术设计了q轴电流控制器,具有对电流较强的适应性、鲁棒性和可操作性。针对速度估计问题,利用一种模型参考自适应方法估计转速和位置,节约了成本和增强了系统的可靠性。仿真结果表明,该方法设计的系统能很好地抑制扰动和跟踪给定,具有良好的动、静态性能。

To solve surface permanent magnet synchronous motor speed control problem,a novel speed control system was proposed.With the L2-gain disturbance attenuation control theory,a robust speed controller was designed,to make the controller fulfill the disturbance rejection and asymptotic stability of subsystems.Meanwhile with the active disturbance rejection control technique,q-axis current controller was designed,which can have strong adaptability,robustness and operability.As to the speed estimation problem of PMSM,a speed sensorless method was put forward by using the MRAC,thereby the cost is effectively reduced and the system reliability is enhanced.Simulation results show that the system has a satisfactory performance.