Unknown inputs observer design for descriptor systems with monotone nonlinearities

Summary This paper is devoted to the reduced‐order unknown inputs observer design problem for a class of descriptor systems having generalized monotone nonlinearities. The underlying system is considered in general rectangular form with unknown inputs in dynamic and in output equations. Under some b...

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Bibliographic Details
Published inInternational journal of robust and nonlinear control Vol. 28; no. 17; pp. 5481 - 5494
Main Authors Gupta, Mahendra Kumar, Tomar, Nutan Kumar, Darouach, Mohamed
Format Journal Article
LanguageEnglish
Published Bognor Regis Wiley Subscription Services, Inc 25.11.2018
Wiley
Subjects
Automatic
descriptor systems
Dynamic stability
Engineering Sciences
linear matrix inequality
Mathematical models
monotone nonlinearity
observer design
unknown inputs
unknown inputs
monotone nonlinearity
observer design
descriptor systems
linear matrix inequality
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Summary:Summary This paper is devoted to the reduced‐order unknown inputs observer design problem for a class of descriptor systems having generalized monotone nonlinearities. The underlying system is considered in general rectangular form with unknown inputs in dynamic and in output equations. Under some basic assumptions on system parameters, sufficient conditions for the existence of observers are proved by showing the stability of their error dynamics. The case where nonlinearity appears in output equation is also considered. The importance of the work is illustrated by real‐life and academic examples.
ISSN:1049-8923
1099-1239
DOI:10.1002/rnc.4331