A Novel Unknown Input Observer Design for Nonlinear LPV Systems

This letter presents the design of an unknown input observer (UIO) for linear parameter-varying (LPV) systems, including nonlinearities that are assumed to fulfill one-sided Lipschitz quadratically inner-bounded (OSL-QIB) conditions. The proposed approach introduces a novel extension of conventional...

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Detalles Bibliográficos
Autores: Arango, Juan Pablo, Etienne, Lucien, Duviella, Eric, Langueh, Kokou, Segovia Castillo, Pablo, Puig, Vicenç
Tipo de recurso: artículo
Estado:Versión aceptada para publicación
Fecha de publicación:2025
País:España
Institución:Consejo Superior de Investigaciones Científicas (CSIC)
Repositorio:DIGITAL.CSIC. Repositorio Institucional del CSIC
OAI Identifier:oai:dnet:digitalcsic_::f552ac4259810ee25ee13b40fa326d08
Acceso en línea:http://hdl.handle.net/10261/427797
https://api.elsevier.com/content/abstract/scopus_id/105008554299
Access Level:acceso abierto
Palabra clave:Fluid mechanics
LPV
material and energy balances
OCIS
OSL-QIB
Unknown input observer
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spelling A Novel Unknown Input Observer Design for Nonlinear LPV SystemsArango, Juan PabloEtienne, LucienDuviella, EricLangueh, KokouSegovia Castillo, PabloPuig, VicençFluid mechanicsLPVmaterial and energy balancesOCISOSL-QIBUnknown input observerThis letter presents the design of an unknown input observer (UIO) for linear parameter-varying (LPV) systems, including nonlinearities that are assumed to fulfill one-sided Lipschitz quadratically inner-bounded (OSL-QIB) conditions. The proposed approach introduces a novel extension of conventional LPV frameworks by directly incorporating nonlinear terms, aiming to improve observer performance and reduce the modeling errors typically introduced during the transformation of a nonlinear system into its LPV counterpart. A key contribution of this letter is the development of a UIO design that avoids the state transformation step, which is often highly complex and only valid under restrictive assumptions such as a constant unknown input matrix D. By eliminating this constraint, the proposed observer design significantly enhances scalability and applicability to a broader class of systems. The performance and effectiveness of the approach are demonstrated through both a numerical example and a well-established open-channel flow benchmark: the Corning channel in California, USA.Peer reviewedInstitute of Electrical and Electronics EngineersPuig, Vicenç [0000-0002-6364-6429]Consejo Superior de Investigaciones Científicas [https://ror.org/02gfc7t72]202620262025info:eu-repo/semantics/articlehttp://purl.org/coar/resource_type/c_6501Postprintinfo:eu-repo/semantics/acceptedVersionhttps://www.iana.org/assignments/media-types/application/pdfhttp://hdl.handle.net/10261/427797https://api.elsevier.com/content/abstract/scopus_id/105008554299reponame:DIGITAL.CSIC. Repositorio Institucional del CSICinstname:Consejo Superior de Investigaciones Científicas (CSIC)Ingléshttps://doi.org/10.1109/LCSYS.2025.3580325Síinfo:eu-repo/semantics/openAccessoai:dnet:digitalcsic_::f552ac4259810ee25ee13b40fa326d082026-05-22T06:33:51Z
dc.title.none.fl_str_mv A Novel Unknown Input Observer Design for Nonlinear LPV Systems
title A Novel Unknown Input Observer Design for Nonlinear LPV Systems
spellingShingle A Novel Unknown Input Observer Design for Nonlinear LPV Systems
Arango, Juan Pablo
Fluid mechanics
LPV
material and energy balances
OCIS
OSL-QIB
Unknown input observer
title_short A Novel Unknown Input Observer Design for Nonlinear LPV Systems
title_full A Novel Unknown Input Observer Design for Nonlinear LPV Systems
title_fullStr A Novel Unknown Input Observer Design for Nonlinear LPV Systems
title_full_unstemmed A Novel Unknown Input Observer Design for Nonlinear LPV Systems
title_sort A Novel Unknown Input Observer Design for Nonlinear LPV Systems
dc.creator.none.fl_str_mv Arango, Juan Pablo
Etienne, Lucien
Duviella, Eric
Langueh, Kokou
Segovia Castillo, Pablo
Puig, Vicenç
author Arango, Juan Pablo
author_facet Arango, Juan Pablo
Etienne, Lucien
Duviella, Eric
Langueh, Kokou
Segovia Castillo, Pablo
Puig, Vicenç
author_role author
author2 Etienne, Lucien
Duviella, Eric
Langueh, Kokou
Segovia Castillo, Pablo
Puig, Vicenç
author2_role author
author
author
author
author
dc.contributor.none.fl_str_mv Puig, Vicenç [0000-0002-6364-6429]
Consejo Superior de Investigaciones Científicas [https://ror.org/02gfc7t72]
dc.subject.none.fl_str_mv Fluid mechanics
LPV
material and energy balances
OCIS
OSL-QIB
Unknown input observer
topic Fluid mechanics
LPV
material and energy balances
OCIS
OSL-QIB
Unknown input observer
description This letter presents the design of an unknown input observer (UIO) for linear parameter-varying (LPV) systems, including nonlinearities that are assumed to fulfill one-sided Lipschitz quadratically inner-bounded (OSL-QIB) conditions. The proposed approach introduces a novel extension of conventional LPV frameworks by directly incorporating nonlinear terms, aiming to improve observer performance and reduce the modeling errors typically introduced during the transformation of a nonlinear system into its LPV counterpart. A key contribution of this letter is the development of a UIO design that avoids the state transformation step, which is often highly complex and only valid under restrictive assumptions such as a constant unknown input matrix D. By eliminating this constraint, the proposed observer design significantly enhances scalability and applicability to a broader class of systems. The performance and effectiveness of the approach are demonstrated through both a numerical example and a well-established open-channel flow benchmark: the Corning channel in California, USA.
publishDate 2025
dc.date.none.fl_str_mv 2025
2026
2026
dc.type.none.fl_str_mv info:eu-repo/semantics/article
http://purl.org/coar/resource_type/c_6501
Postprint
info:eu-repo/semantics/acceptedVersion
format article
status_str acceptedVersion
dc.identifier.none.fl_str_mv http://hdl.handle.net/10261/427797
https://api.elsevier.com/content/abstract/scopus_id/105008554299
url http://hdl.handle.net/10261/427797
https://api.elsevier.com/content/abstract/scopus_id/105008554299
dc.language.none.fl_str_mv Inglés
language_invalid_str_mv Inglés
dc.relation.none.fl_str_mv https://doi.org/10.1109/LCSYS.2025.3580325
Sí
dc.rights.none.fl_str_mv info:eu-repo/semantics/openAccess
eu_rights_str_mv openAccess
dc.format.none.fl_str_mv https://www.iana.org/assignments/media-types/application/pdf
dc.publisher.none.fl_str_mv Institute of Electrical and Electronics Engineers
publisher.none.fl_str_mv Institute of Electrical and Electronics Engineers
dc.source.none.fl_str_mv reponame:DIGITAL.CSIC. Repositorio Institucional del CSIC
instname:Consejo Superior de Investigaciones Científicas (CSIC)
instname_str Consejo Superior de Investigaciones Científicas (CSIC)
reponame_str DIGITAL.CSIC. Repositorio Institucional del CSIC
collection DIGITAL.CSIC. Repositorio Institucional del CSIC
repository.name.fl_str_mv
repository.mail.fl_str_mv
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score 15,811543

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