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State and input simultaneous estimation for a class of time-delay systems with uncertainties

Trinh, Hieu and Ha, Q. 2007, State and input simultaneous estimation for a class of time-delay systems with uncertainties, IEEE transactions on circuits and systems. II, Express briefs, vol. 54, no. 6, pp. 527-531.

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Title State and input simultaneous estimation for a class of time-delay systems with uncertainties
Author(s) Trinh, Hieu
Ha, Q.
Journal name IEEE transactions on circuits and systems. II, Express briefs
Volume number 54
Issue number 6
Start page 527
End page 531
Publisher IEEE
Place of publication Piscataway, N.J.
Publication date 2007-06
ISSN 1549-7747
Keyword(s) reduced-order observer
simultaneous estimation
time delay
unknown input
Summary This brief addresses the problem of estimation of both the states and the unknown inputs of a class of systems that are subject to a time-varying delay in their state variables, to an unknown input, and also to an additive uncertain, nonlinear disturbance. Conditions are derived for the solvability of the design matrices of a reduced-order observer for state and input estimation, and for the stability of its dynamics. To improve computational efficiency, a delay-dependent asymptotic stability condition is then developed using the linear matrix inequality formulation. A design procedure is proposed and illustrated by a numerical example.
Notes This material is presented to ensure timely dissemination of scholarly and technical work. Copyright and all rights therein are retained by authors or by other copyright holders. All persons copying this information are expected to adhere to the terms and constraints invoked by each author's copyright. In most cases, these works may not be reposted without the explicit permission of the copyright holder.
Language eng
Field of Research 091302 Automation and Control Engineering
Socio Economic Objective 970109 Expanding Knowledge in Engineering
HERDC Research category C1 Refereed article in a scholarly journal
ERA Research output type C Journal article
Copyright notice ©2007, IEEE
Persistent URL http://hdl.handle.net/10536/DRO/DU:30007734

Document type: Journal Article
Collections: School of Engineering and Information Technology
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