感应电机的L2增益鲁棒控制

电机电阻在运行过程中会发生较大范围的未知变化，对感应电机的控制性能造成不利影响。该文针对工程中常用的三阶感应电机模型，根据L2增益干扰抑制理论设计了鲁棒控制器。在误差动态方程中，将由未知电阻引起的不确定项看作系统的干扰，设计控制器使得干扰信号对评价信号的L2增益小于给定的性能指标。仿真结果表明，即使转子电阻偏离其标称值很多，控制器仍然能够保持优良的转速与磁链跟踪性能。

THE ROBUST CONTROL OF INDUCTION MOTOR BASED ON L2-GAIN

This paper presents a new robust control strategy for induction motor with unknown rotor resistance. For the third order model generally used in engineering practice, the L2-gain-based disturbance attenuation controller is designed. This control law holds the L2-gain from the disturbance to a penalty signal less than the given level. The nonlinear property of the dynamic system is well preserved and utilized in the controller. Simulation results show a perfect tracking performance of the motor velocity and flux even if the rotor resistance varies significantly from their nominal values.