基于自抗扰控制器的开关磁阻电动机转矩控制系统

将具有优良抗干扰性能的自抗扰控制器(ADRC)引入开关磁阻电动机的转矩控制系统中,回避了传统转矩控制器设计中对转矩逆模型精确建模的要求。将模型的不确定性及负载作为干扰,利用自抗扰控制器内部的扩张状态观测器观测系统的内外扰动项,并进行前馈补偿,从而实现转矩控制系统中转速环与电流环之间的精确解耦。仿真结果表明该控制系统具有良好的动、静态特性,对负载扰动、电机参数变化都具有较好的鲁棒性,可以实现高性能的转矩控制。

Torque Control System of Switched Reluctance Motor Based on Active-Disturbance Rejection Controller

Auto-disturbances rejection controller(ADRC),which had good robustness,was used to realize the torque control of a switched reluctance motor(SRM).This control strategy avoided accurately modeling of inverse torque in traditional torque controller.In this paper,uncertainties of the model and load were viewed as disturbances.Extended state observer(ESO),which was a part of ADRC,can be used to real-time calculate the value of the integrated disturbance and compensate it.By the ESO,a SRM torque system was decoupled,and then ADRC can be separately used to design the speed loop and the current loop.Detailed simulation results showed that this torque control system based on ADRC had excellently static ability and dynamic ability as well.The controller ensured very good robustness and adaptability under modeling uncertainties and external disturbances,which produced a low ripple control of torque.