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Fault Tolerant Robust Control Applied for Induction Motor (LMI approach)

Author(s): Hamouda KHECHINI | Moncef GOSSA

Journal: Journal of Electrical Systems
ISSN 1112-5209

Volume: 3;
Issue: 3;
Start page: 162;
Date: 2007;
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Keywords: induction motor | multi-objective control | 2 H /H∞ guaranteed | pole assignment | tolerant control | state feedback | LMI approach.

This paper foregrounds fault tolerant robust control of uncertain dynamic linear systems in the state space representation. In fact, the industrial systems are more and more complex and the diagnosis process becomes indispensable to guarantee their surety of functioning and availability, that’s why a fault tolerant control law is imperative to achieve the diagnosis. In this paper, we address the problem of state feedback H2 /H∞ mixed with regional pole placement for linear continuous uncertain system. Sufficient conditions for feasibility are derived for a general class of convex regions of the complex plan. The conditions are presented as a collection of linear matrix inequalities (LMI 's). The efficiency and performance of this approach are then tested taking into consideration the robust control of a three- phase induction motor drive with the fluctuation of its parameters during the functioning.
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