摘要
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。
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.
出处
《中国电机工程学报》
EI
CSCD
北大核心
2003年第9期117-120,共4页
Proceedings of the CSEE
