Technical communique: Finite-time stabilization via dynamic output feedback

Authors:
Francesco Amato;Marco Ariola;Carlo Cosentino
Affiliations:
School of Computer Science and Biomedical Engineering, Universití degli Studi Magna Græcia di Catanzaro, Viale Europa, Campus di Germaneto, 88100 Catanzaro, Italy;Dipartimento per le Tecnologie, Universití degli Studi di Napoli Parthenope, Via Acton 38, 80133 Napoli, Italy;School of Computer Science and Biomedical Engineering, Universití degli Studi Magna Græcia di Catanzaro, Viale Europa, Campus di Germaneto, 88100 Catanzaro, Italy
Venue:
Automatica (Journal of IFAC)
Year:
2006

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Abstract

In this paper the finite-time stabilization of continuous-time linear systems is considered; this problem has been previously solved in the state feedback case. In this work the assumption that the state is available for feedback is removed and the output feedback problem is investigated. The main result provided is a sufficient condition for the design of a dynamic output feedback controller which makes the closed loop system finite-time stable. Such sufficient condition is given in terms of an LMI optimization problem; this gives the opportunity of fitting the finite-time control problem in the general framework of the LMI approach to the multi-objective synthesis. In this context an example illustrates the design of a controller which guarantees, at the same time, finite-time stability together with some pole placement requirements.