摘要
将线性自抗扰控制器(LADRC)应用到永磁同步电机调速系统中,将电流环中的反电势耦合项、定子电阻压降和转速环中的负载转矩和粘滞摩擦等作为扰动量,并采用扩张状态观测器(LESO)和线性反馈控制律(LSEF)抵消转速环、电流环中的扰动,实现转速环、电流环的完全解耦控制,有效提高了低速、加载、卸载时的转速稳定性。给出了基于转速环、电流环带宽指标的LADRC参数整定公式,并通过仿真和实验验证了该算法的有效性。
This paper applies linear active disturbance rejection controller to speed and current loop of PMSM, the back EMF term, voltage drop of stator resistance in the current loop and load torque, viscous friction in the speed loop are taken as disturbances and canceled by LESO and LSEF, realizing completely decoupling control of speed and current. The stability of speed is improved profoundly in low speed, loading and unloading. The paper provides practical formulas and principles for the tuning of LADRC. The validity of the proposed strategy is verified by simulations and experiments.
出处
《控制工程》
CSCD
北大核心
2017年第9期1818-1822,共5页
Control Engineering of China
关键词
永磁同步电机
线性自抗扰控制器
参数整定
转速稳定性
Permanent magnet synchronous motor
linear active disturbance rejection controller
parameter tuning
stability of speed
