Adaptive observers for speed sensorless IMs
by Ahmed Chouya; Mohammed Chanafa; Abdellah Mansouri
International Journal of Systems, Control and Communications (IJSCC), Vol. 6, No. 4, 2015

Abstract: In this paper, one proposes an approach which allows the design adaptive observers for a class of uniformly observable nonlinear MIMO systems with linear parameterisations. The structure of the proposed observer is simple and it is able to give rise to different observers: 1) adaptive high gain observer for linearly parameterised; 2) adaptive sliding mode observer for linearly parameterised with tanh commutation function; 3) adaptive sliding mode observer for linearly parameterised with arctan commutation function. These observers are applied to jointly estimate states (rotor flux, rotating speed and torque load) and unknown constant parameters (stator resistance).

Online publication date: Fri, 16-Oct-2015

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