Non-linear adaptive control of induction motors

Given measurements of rotor position, rotor velocity, and stator currents, we design an adaptive control scheme that is free of singularities, does no t require rotor flux measurements, and provides for simultaneous asymptotic rotor position/rotor flux tracking despite the uncertainty associated with the mechanical subsystem parameters and the rotor resistance parameter. Fo r the case when the rotor resistance parameter is known exactly, we modify the structure of the controller to achieve global asymptotic rotor position /rotor Aux tracking while accommodating for parameter uncertainty associate d with the mechanical subsystem parameters and the stator electrical subsys tem parameters. Experimental results are presented to illustrate the perfor mance of the control structure. Copyright (C) 1999 John Wiley & Sons, Ltd.