ANGULAR POSITION ADAPTIVE-CONTROL OF A SQUIRREL-CAGE INDUCTION MACHINE

We find a control scheme for a squirrel-cage induction motor, where th e aim is to maximize the power factor and linearize the total electrom agnetic torque supplied by the motor. Thanks to this maximization of t he power factor, we represent the nonlinearities of the motor model in an algebraic equation; and thus we linearize the model by a simple ch ange of variable. Since this linearization is very sensitive to parame ter uncertainty, we develop an adaptive control law that compensates s uch uncertainties in order to guarantee accurate linearization. (C) 19 97 Elsevier Science Ltd.