A relaxed small-gain theorem for interconnected discrete-time systems

R. Geiselhart, M. Lazar, F.R. Wirth

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Samenvatting

This paper presents a relaxation of the small-gain theorem for the stability analysis of interconnected discrete-time nonlinear systems. The distinctive feature of this relaxation is that separate systems may be unstable, while global asymptotic stability (GAS) of the overall interconnected systems equilibrium is obtained. In addition, a Lyapunov function for the overall interconnected system is explicitly derived. Necessity of the hypothesis of the small-gain theorem is established for a rather general class of GAS nonlinear systems. An illustrative example demonstrates the non-conservatism of the developed small-gain theorem.
Originele taal-2Engels
Pagina's (van-tot)812-817
Aantal pagina's6
TijdschriftIEEE Transactions on Automatic Control
Volume60
Nummer van het tijdschrift3
DOI's
StatusGepubliceerd - 2015

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