Robust control for induction motor with rotor field oriented

H∞ robust control is employed to deal with parameters perturbation and external disturbance attenuation for an induction motor with rotor field oriented in this paper. Firstly, nonlinear compensation is introduced to realize dynamically input-output decoupling for induction motor with rotor field oriented to solve the problems that vector control of induction motor only realizes partial steady state decoupling, and its performance is liable to the influence of rotor resistance parameters perturbation. Then, based on the decoupling model research works are made to use H_∞ robust state feedback to control an induction motor. Simulation result demonstrate the efficiency of the proposed method.