Journal
INTERNATIONAL JOURNAL OF ROBUST AND NONLINEAR CONTROL
Volume 18, Issue 3, Pages 296-318Publisher
JOHN WILEY & SONS LTD
DOI: 10.1002/rnc.1221
Keywords
state-delay systems; Markovian jump parameters; simultaneous H-2/H-infinity control; stochastic stability; norm-bounded uncertainties
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This paper presents new results pertaining to the control design of a class of linear uncertain systems with Markovian jump parameters. An integral part of the system dynamics is a delayed state in which the time-delays are mode dependent. The jumping parameters are modelled as a continuous-time, discrete-state Markov process and the uncertainties are norm-bounded. We construct an appropriate Lyapunov-Krasovskii functional and design a simultaneous H-2/H-infinity controller which minimizes a quadratic H-2 performance measure while satisfying a prescribed H-infinity-norm bound on the closed-loop system. It is established that sufficient conditions for the existence of the simultaneous H-2/H-infinity controller and the associated performance upper bound are cast in the form of linear matrix inequalities. Simulation results are provided and extension to the case where the jumping rates are subject to uncertainties is presented. Copyright (c) 2007 John Wiley & Sons, Ltd.
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