This paper was published as Control Engineering Practice, 2002, 10 (6), pp.633-644. It is available from http://www.sciencedirect.com/science/journal/09670661. Doi: 10.1016/S0967-0661(02)00024-2A robust controller for an induction motor is designed using H∞ control theory and input–output feedback linearization. Because of the special structure of the state–space equations governing the induction motor a linear parameter varying (LPV) feedback controller, scheduled with rotor speed, is used for the inner current loop. An LPV observer is also used to estimate the flux vector. The application is based on the non-linear model and tracking requirements of a recently published benchmark, which describes an experimental set-up at the Laboratory of Electrical Engineering, Paris. The proposed controller delivers high performance over the entire operating range of the induction motor and compares favourably with other published results
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