Unknown Input Observers for Switched Nonlinear Discrete Time Descriptor Systems

Unknown Input Observers for Switched Nonlinear Discrete Time Descriptor Systems

In this paper, a linear matrix inequality technique for the state estimation of discrete-time, nonlinear switched descriptor systems is developed. The considered systems are composed of linear and nonlinear parts. An observer giving a perfect unknown input decoupled state estimation is proposed. Suf...

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Veröffentlicht in:IEEE transactions on automatic control 2008-02, Vol.53 (1), p.373-379
Hauptverfasser: Koenig, D., Marx, B.
Format: Artikel
Sprache:eng
Schlagworte:
Automatic
Automatic control
Control systems
Convergence
Engineering Sciences
Hybrid systems
Linear matrix inequalities
Mathematical models
Nonlinear systems
Nonlinearity
Observers
polyquadratic stability
Pulse width modulation converters
Riccati equations
Stability
State estimation
Sufficient conditions
switched descriptor systems
Switched systems
unknown input (UI) observers
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Beschreibung
Zusammenfassung:In this paper, a linear matrix inequality technique for the state estimation of discrete-time, nonlinear switched descriptor systems is developed. The considered systems are composed of linear and nonlinear parts. An observer giving a perfect unknown input decoupled state estimation is proposed. Sufficient conditions of global convergence of observers are proposed. Numerical examples are given to illustrate this method.
ISSN:0018-9286
1558-2523
DOI:10.1109/TAC.2007.914226