Observer design for systems with non small and unknown time-varying delay

Alexandre Seuret 1, 2, 3 Thierry Floquet 4, 5 Jean-Pierre Richard 4, 5 Sarah Spurgeon 6
1 Control and Instrumentation Research Group
2 GIPSA-lab - Grenoble Images Parole Signal Automatique
3 NECS - Networked Controlled Systems
Inria Grenoble - Rhône-Alpes, GIPSA-DA - Département Automatique
4 ALIEN - Algebra for Digital Identification and Estimation
Inria Lille - Nord Europe, Inria Saclay - Ile de France, Ecole Centrale de Lille, X - École polytechnique, CNRS - Centre National de la Recherche Scientifique : UMR8146
5 SyNeR - Systèmes Non Linéaires et à Retards
CRIStAL - Centre de Recherche en Informatique, Signal et Automatique de Lille (CRIStAL) - UMR 9189
6 Department of Electronics
Abstract : This chapter deals with the design of observers for linear systems with unknown, time-varying, but bounded delays (on the state and on the input). In this work, the problem is solved for a class of systems by combining the unknown input observer approach with an adequate choice of a Lyapunov-Krasovskii functional for non small delay systems. This result provides workable conditions in terms of rank assumptions and LMI conditions. The dynamic properties of the observer are also analyzed. A 4th-order example is used to demonstrate the feasibility of the proposed solution.
Type de document :
Chapitre d'ouvrage
J.J. Loiseau, W. Michiels, S.I. Niculescu, R. Sipahi. Topics in Time-Delay Systems: Analysis, Algorithms and Control, Springer Verlag, pp.233-242, 2009, LNCIS, Lecture Notes in Control and Information Sciences, 978-3-642-02896-0. 〈10.1007/978-3-642-02897-7_20〉
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Alexandre Seuret, Thierry Floquet, Jean-Pierre Richard, Sarah Spurgeon. Observer design for systems with non small and unknown time-varying delay. J.J. Loiseau, W. Michiels, S.I. Niculescu, R. Sipahi. Topics in Time-Delay Systems: Analysis, Algorithms and Control, Springer Verlag, pp.233-242, 2009, LNCIS, Lecture Notes in Control and Information Sciences, 978-3-642-02896-0. 〈10.1007/978-3-642-02897-7_20〉. 〈inria-00266457〉

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