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Design of first- and second-order sliding mode observers for induction motors using a stator-flux model

Rao, Sachit and Utkin, Vadim and Buss, Martin (2010) Design of first- and second-order sliding mode observers for induction motors using a stator-flux model. In: International Journal of Control, 83 (7). pp. 1457-1464.

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Abstract

We extend current research in the area of 'sensorless' control of induction motors by presenting two observers based on first- and second-order sliding mode control theories for the simultaneous estimation of flux and speed. We base the observers on the stator-flux model of the motor instead of the usual rotor-flux model mainly because of the uncertain rotor resistance that plays a significant role in the latter. By designing the observers as if they are sliding mode controllers, we lend the properties of parameter insensitive closed-loop dynamics and finite time convergence to the stator flux and speed estimation schemes. We also present simulation and experimental results to validate the operation of the observers.

Item Type: Journal Article
Additional Information: Copyright of this article belongs to Taylor and Francis Group.
Keywords: induction motors;observers;sliding mode control;stator-flux model;super twisting algorithm
Department/Centre: Division of Mechanical Sciences > Aerospace Engineering (Formerly, Aeronautical Engineering)
Date Deposited: 13 Jul 2010 05:40
Last Modified: 13 Jul 2010 05:40
URI: http://eprints.iisc.ernet.in/id/eprint/29193

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