感应电机转矩跟踪无源控制及自适应观测器设计.PDFVIP

30 8 Vol. 30 No. 8 2013 8 Control Theory Applications Aug. 2013 DOI: 10.7641/CTA.2013.20848 , , , (1. , 450001; 2. , SO17 1BJ ) : , . , , . , , Lyapunov, . , . . : ; ; ; : TP273 : A Passivity-based torque tracking control and adaptive observer design of induction motors LIU Yan-hong , HUO Hai-juan , CHU Bing , LI Chao (1. School of Electrical Engineering, Zhengzhou University, Zhengzhou Henan 450001, China; 2. Department of Electronics and Computer Science, University of Southampton, Southampton SO17 1BJ, U. K.) Abstract: For the high performance torque tracking and the flux observer of the induction motors, a passivity-based tracking controller and adaptive observer are proposed. By utilizing the passivation property of the induction motors, we put forward an asymptotical torque tracking controller. The equilibrium point of the system is reassigned and the damping injection controller is proposed to improve the convergence rate of the system. To simply the structure of the flux observer, the stator currents and the rotor flux are used as the states to construct the adaptive flux observer. An adaptive controller is developed based on the Lyapunov stability theory to realize the online estimation of the flux magnitude, motor speed and stator resistance. The observer gain is chosen to decrease the effect of the speed estimation error. Simulation results show that the proposed adaptive-observer-based passivity tracking control strategy can effectively improve the static and dynam