Revisiting excitation force estimation in WECs: On the (mis)use of structure-based estimation approaches

Autores
García Violini, Diego Demián; Faedo, Nicolás Ezequiel; Peña Sanchez, Yerai; Nava, Vincenzo; Ringwood, John V.
Año de publicación
2024
Idioma
inglés
Tipo de recurso
artículo
Estado
versión publicada
Descripción
Wave excitation force (torque) estimators, vital in wave energy systems, generally combine the nominal representation of a wave energy converter (WEC) with an excitation force (perturbation) model. Thus, this model-based estimation approach, grounded in the internal model principle, often employs two perturbation models: (i) the harmonic oscillator structure, prevalent in literature, assuming sinusoidal signals; and (ii) the integrator (random walk) scheme, assuming unit step-like signals. These models comprehensively represent a specific family of estimators, as discussed in this study. However, both models may struggle to capture the irregular (stochastic) nature of ocean waves. This study challenges the prevailing assumption that the harmonic oscillator structure, selected for its resemblance to ocean wave oscillations, is inherently the optimal choice. This study provides a rigorous discussion on convergence conditions. Thus, is shown that, while the harmonic oscillator can be highly effective under specific conditions, the random walk structure, despite its simplicity, can surpass the performance of the harmonic oscillator scheme. Formal proofs support this argument, emphasising the effectiveness of the harmonic oscillator can be guaranteed with periodic signals.
Fil: García Violini, Diego Demián. Universidad Nacional de Quilmes; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina
Fil: Faedo, Nicolás Ezequiel. Politecnico di Torino; Italia
Fil: Peña Sanchez, Yerai. Mondragon University; España
Fil: Nava, Vincenzo. No especifíca;
Fil: Ringwood, John V.. Maynooth University; Irlanda
Materia
WAVE EXCITATION
INTERNAL MODEL PRINCIPLE
DISTURBANCE ESTIMATION
CONTROL
WAVE ENERGY CONVERTER
Nivel de accesibilidad
acceso abierto
Condiciones de uso
https://creativecommons.org/licenses/by/2.5/ar/
Repositorio
CONICET Digital (CONICET)
Institución
Consejo Nacional de Investigaciones Científicas y Técnicas
OAI Identificador
oai:ri.conicet.gov.ar:11336/242692
Acceder
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network_name_str CONICET Digital (CONICET)
spelling Revisiting excitation force estimation in WECs: On the (mis)use of structure-based estimation approachesGarcía Violini, Diego DemiánFaedo, Nicolás EzequielPeña Sanchez, YeraiNava, VincenzoRingwood, John V.WAVE EXCITATIONINTERNAL MODEL PRINCIPLEDISTURBANCE ESTIMATIONCONTROLWAVE ENERGY CONVERTERhttps://purl.org/becyt/ford/2.2https://purl.org/becyt/ford/2https://purl.org/becyt/ford/2.2https://purl.org/becyt/ford/2Wave excitation force (torque) estimators, vital in wave energy systems, generally combine the nominal representation of a wave energy converter (WEC) with an excitation force (perturbation) model. Thus, this model-based estimation approach, grounded in the internal model principle, often employs two perturbation models: (i) the harmonic oscillator structure, prevalent in literature, assuming sinusoidal signals; and (ii) the integrator (random walk) scheme, assuming unit step-like signals. These models comprehensively represent a specific family of estimators, as discussed in this study. However, both models may struggle to capture the irregular (stochastic) nature of ocean waves. This study challenges the prevailing assumption that the harmonic oscillator structure, selected for its resemblance to ocean wave oscillations, is inherently the optimal choice. This study provides a rigorous discussion on convergence conditions. Thus, is shown that, while the harmonic oscillator can be highly effective under specific conditions, the random walk structure, despite its simplicity, can surpass the performance of the harmonic oscillator scheme. Formal proofs support this argument, emphasising the effectiveness of the harmonic oscillator can be guaranteed with periodic signals.Fil: García Violini, Diego Demián. Universidad Nacional de Quilmes; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas; ArgentinaFil: Faedo, Nicolás Ezequiel. Politecnico di Torino; ItaliaFil: Peña Sanchez, Yerai. Mondragon University; EspañaFil: Nava, Vincenzo. No especifíca;Fil: Ringwood, John V.. Maynooth University; IrlandaPergamon-Elsevier Science Ltd2024-11info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionhttp://purl.org/coar/resource_type/c_6501info:ar-repo/semantics/articuloapplication/pdfapplication/pdfapplication/pdfhttp://hdl.handle.net/11336/242692García Violini, Diego Demián; Faedo, Nicolás Ezequiel; Peña Sanchez, Yerai; Nava, Vincenzo; Ringwood, John V.; Revisiting excitation force estimation in WECs: On the (mis)use of structure-based estimation approaches; Pergamon-Elsevier Science Ltd; Ocean Engineering; 311; 11-2024; 1-130029-8018CONICET DigitalCONICETenginfo:eu-repo/semantics/altIdentifier/url/https://linkinghub.elsevier.com/retrieve/pii/S0029801824022029info:eu-repo/semantics/altIdentifier/doi/10.1016/j.oceaneng.2024.118864info:eu-repo/semantics/openAccesshttps://creativecommons.org/licenses/by/2.5/ar/reponame:CONICET Digital (CONICET)instname:Consejo Nacional de Investigaciones Científicas y Técnicas2025-09-29T10:36:36Zoai:ri.conicet.gov.ar:11336/242692instacron:CONICETInstitucionalhttp://ri.conicet.gov.ar/Organismo científico-tecnológicoNo correspondehttp://ri.conicet.gov.ar/oai/requestdasensio@conicet.gov.ar; lcarlino@conicet.gov.arArgentinaNo correspondeNo correspondeNo correspondeopendoar:34982025-09-29 10:36:36.815CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicasfalse
dc.title.none.fl_str_mv Revisiting excitation force estimation in WECs: On the (mis)use of structure-based estimation approaches
title Revisiting excitation force estimation in WECs: On the (mis)use of structure-based estimation approaches
spellingShingle Revisiting excitation force estimation in WECs: On the (mis)use of structure-based estimation approaches
García Violini, Diego Demián
WAVE EXCITATION
INTERNAL MODEL PRINCIPLE
DISTURBANCE ESTIMATION
CONTROL
WAVE ENERGY CONVERTER
title_short Revisiting excitation force estimation in WECs: On the (mis)use of structure-based estimation approaches
title_full Revisiting excitation force estimation in WECs: On the (mis)use of structure-based estimation approaches
title_fullStr Revisiting excitation force estimation in WECs: On the (mis)use of structure-based estimation approaches
title_full_unstemmed Revisiting excitation force estimation in WECs: On the (mis)use of structure-based estimation approaches
title_sort Revisiting excitation force estimation in WECs: On the (mis)use of structure-based estimation approaches
dc.creator.none.fl_str_mv García Violini, Diego Demián
Faedo, Nicolás Ezequiel
Peña Sanchez, Yerai
Nava, Vincenzo
Ringwood, John V.
author García Violini, Diego Demián
author_facet García Violini, Diego Demián
Faedo, Nicolás Ezequiel
Peña Sanchez, Yerai
Nava, Vincenzo
Ringwood, John V.
author_role author
author2 Faedo, Nicolás Ezequiel
Peña Sanchez, Yerai
Nava, Vincenzo
Ringwood, John V.
author2_role author
author
author
author
dc.subject.none.fl_str_mv WAVE EXCITATION
INTERNAL MODEL PRINCIPLE
DISTURBANCE ESTIMATION
CONTROL
WAVE ENERGY CONVERTER
topic WAVE EXCITATION
INTERNAL MODEL PRINCIPLE
DISTURBANCE ESTIMATION
CONTROL
WAVE ENERGY CONVERTER
purl_subject.fl_str_mv https://purl.org/becyt/ford/2.2
https://purl.org/becyt/ford/2
https://purl.org/becyt/ford/2.2
https://purl.org/becyt/ford/2
dc.description.none.fl_txt_mv Wave excitation force (torque) estimators, vital in wave energy systems, generally combine the nominal representation of a wave energy converter (WEC) with an excitation force (perturbation) model. Thus, this model-based estimation approach, grounded in the internal model principle, often employs two perturbation models: (i) the harmonic oscillator structure, prevalent in literature, assuming sinusoidal signals; and (ii) the integrator (random walk) scheme, assuming unit step-like signals. These models comprehensively represent a specific family of estimators, as discussed in this study. However, both models may struggle to capture the irregular (stochastic) nature of ocean waves. This study challenges the prevailing assumption that the harmonic oscillator structure, selected for its resemblance to ocean wave oscillations, is inherently the optimal choice. This study provides a rigorous discussion on convergence conditions. Thus, is shown that, while the harmonic oscillator can be highly effective under specific conditions, the random walk structure, despite its simplicity, can surpass the performance of the harmonic oscillator scheme. Formal proofs support this argument, emphasising the effectiveness of the harmonic oscillator can be guaranteed with periodic signals.
Fil: García Violini, Diego Demián. Universidad Nacional de Quilmes; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina
Fil: Faedo, Nicolás Ezequiel. Politecnico di Torino; Italia
Fil: Peña Sanchez, Yerai. Mondragon University; España
Fil: Nava, Vincenzo. No especifíca;
Fil: Ringwood, John V.. Maynooth University; Irlanda
description Wave excitation force (torque) estimators, vital in wave energy systems, generally combine the nominal representation of a wave energy converter (WEC) with an excitation force (perturbation) model. Thus, this model-based estimation approach, grounded in the internal model principle, often employs two perturbation models: (i) the harmonic oscillator structure, prevalent in literature, assuming sinusoidal signals; and (ii) the integrator (random walk) scheme, assuming unit step-like signals. These models comprehensively represent a specific family of estimators, as discussed in this study. However, both models may struggle to capture the irregular (stochastic) nature of ocean waves. This study challenges the prevailing assumption that the harmonic oscillator structure, selected for its resemblance to ocean wave oscillations, is inherently the optimal choice. This study provides a rigorous discussion on convergence conditions. Thus, is shown that, while the harmonic oscillator can be highly effective under specific conditions, the random walk structure, despite its simplicity, can surpass the performance of the harmonic oscillator scheme. Formal proofs support this argument, emphasising the effectiveness of the harmonic oscillator can be guaranteed with periodic signals.
publishDate 2024
dc.date.none.fl_str_mv 2024-11
dc.type.none.fl_str_mv info:eu-repo/semantics/article
info:eu-repo/semantics/publishedVersion
http://purl.org/coar/resource_type/c_6501
info:ar-repo/semantics/articulo
format article
status_str publishedVersion
dc.identifier.none.fl_str_mv http://hdl.handle.net/11336/242692
García Violini, Diego Demián; Faedo, Nicolás Ezequiel; Peña Sanchez, Yerai; Nava, Vincenzo; Ringwood, John V.; Revisiting excitation force estimation in WECs: On the (mis)use of structure-based estimation approaches; Pergamon-Elsevier Science Ltd; Ocean Engineering; 311; 11-2024; 1-13
0029-8018
CONICET Digital
CONICET
url http://hdl.handle.net/11336/242692
identifier_str_mv García Violini, Diego Demián; Faedo, Nicolás Ezequiel; Peña Sanchez, Yerai; Nava, Vincenzo; Ringwood, John V.; Revisiting excitation force estimation in WECs: On the (mis)use of structure-based estimation approaches; Pergamon-Elsevier Science Ltd; Ocean Engineering; 311; 11-2024; 1-13
0029-8018
CONICET Digital
CONICET
dc.language.none.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv info:eu-repo/semantics/altIdentifier/url/https://linkinghub.elsevier.com/retrieve/pii/S0029801824022029
info:eu-repo/semantics/altIdentifier/doi/10.1016/j.oceaneng.2024.118864
dc.rights.none.fl_str_mv info:eu-repo/semantics/openAccess
https://creativecommons.org/licenses/by/2.5/ar/
eu_rights_str_mv openAccess
rights_invalid_str_mv https://creativecommons.org/licenses/by/2.5/ar/
dc.format.none.fl_str_mv application/pdf
application/pdf
application/pdf
dc.publisher.none.fl_str_mv Pergamon-Elsevier Science Ltd
publisher.none.fl_str_mv Pergamon-Elsevier Science Ltd
dc.source.none.fl_str_mv reponame:CONICET Digital (CONICET)
instname:Consejo Nacional de Investigaciones Científicas y Técnicas
reponame_str CONICET Digital (CONICET)
collection CONICET Digital (CONICET)
instname_str Consejo Nacional de Investigaciones Científicas y Técnicas
repository.name.fl_str_mv CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicas
repository.mail.fl_str_mv dasensio@conicet.gov.ar; lcarlino@conicet.gov.ar
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score 13.070432

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