Reduced-order thermodynamic models for servo-pneumatic actuator chambers
Autor(a) principal: | |
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Data de Publicação: | 2006 |
Outros Autores: | |
Tipo de documento: | Artigo |
Idioma: | eng |
Título da fonte: | Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) |
Texto Completo: | https://hdl.handle.net/10216/67420 |
Resumo: | This paper discusses thermodynamic models of air inside pneumatic actuator chambers. In servopneumatics common practice, these models are simplified by neglecting the temperature dynamics. Classical models in literature assume temperature inside the pneumatic chamber to be either constant or to follow a polytropic law. Furthermore, the mixing process of air entering the chamber and heat transfer between air and cylinder walls is often neglected or only implicitly taken into account. This work evaluates the impact of these simplifications/order reductions in the prediction of pressure inside the actuator chamber. Classical models are compared with several others taking into account not only the mixing process but also explicitly including heat transfer between air and cylinder walls. Simulation studies show that the reduced order models proposed in this paper can lead to a mean square error in pressure prediction of only 10% of the one obtained using classical models. |
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Reduced-order thermodynamic models for servo-pneumatic actuator chambersAutomaçãoAutomationThis paper discusses thermodynamic models of air inside pneumatic actuator chambers. In servopneumatics common practice, these models are simplified by neglecting the temperature dynamics. Classical models in literature assume temperature inside the pneumatic chamber to be either constant or to follow a polytropic law. Furthermore, the mixing process of air entering the chamber and heat transfer between air and cylinder walls is often neglected or only implicitly taken into account. This work evaluates the impact of these simplifications/order reductions in the prediction of pressure inside the actuator chamber. Classical models are compared with several others taking into account not only the mixing process but also explicitly including heat transfer between air and cylinder walls. Simulation studies show that the reduced order models proposed in this paper can lead to a mean square error in pressure prediction of only 10% of the one obtained using classical models.20062006-01-01T00:00:00Zinfo:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/articleapplication/pdfhttps://hdl.handle.net/10216/67420eng0959651810.1243/09596518JSCE203J. Falcão CarneiroF. Gomes de Almeidainfo:eu-repo/semantics/openAccessreponame:Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos)instname:Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informaçãoinstacron:RCAAP2023-11-29T13:00:13Zoai:repositorio-aberto.up.pt:10216/67420Portal AgregadorONGhttps://www.rcaap.pt/oai/openaireopendoar:71602024-03-19T23:31:30.759357Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) - Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informaçãofalse |
dc.title.none.fl_str_mv |
Reduced-order thermodynamic models for servo-pneumatic actuator chambers |
title |
Reduced-order thermodynamic models for servo-pneumatic actuator chambers |
spellingShingle |
Reduced-order thermodynamic models for servo-pneumatic actuator chambers J. Falcão Carneiro Automação Automation |
title_short |
Reduced-order thermodynamic models for servo-pneumatic actuator chambers |
title_full |
Reduced-order thermodynamic models for servo-pneumatic actuator chambers |
title_fullStr |
Reduced-order thermodynamic models for servo-pneumatic actuator chambers |
title_full_unstemmed |
Reduced-order thermodynamic models for servo-pneumatic actuator chambers |
title_sort |
Reduced-order thermodynamic models for servo-pneumatic actuator chambers |
author |
J. Falcão Carneiro |
author_facet |
J. Falcão Carneiro F. Gomes de Almeida |
author_role |
author |
author2 |
F. Gomes de Almeida |
author2_role |
author |
dc.contributor.author.fl_str_mv |
J. Falcão Carneiro F. Gomes de Almeida |
dc.subject.por.fl_str_mv |
Automação Automation |
topic |
Automação Automation |
description |
This paper discusses thermodynamic models of air inside pneumatic actuator chambers. In servopneumatics common practice, these models are simplified by neglecting the temperature dynamics. Classical models in literature assume temperature inside the pneumatic chamber to be either constant or to follow a polytropic law. Furthermore, the mixing process of air entering the chamber and heat transfer between air and cylinder walls is often neglected or only implicitly taken into account. This work evaluates the impact of these simplifications/order reductions in the prediction of pressure inside the actuator chamber. Classical models are compared with several others taking into account not only the mixing process but also explicitly including heat transfer between air and cylinder walls. Simulation studies show that the reduced order models proposed in this paper can lead to a mean square error in pressure prediction of only 10% of the one obtained using classical models. |
publishDate |
2006 |
dc.date.none.fl_str_mv |
2006 2006-01-01T00:00:00Z |
dc.type.status.fl_str_mv |
info:eu-repo/semantics/publishedVersion |
dc.type.driver.fl_str_mv |
info:eu-repo/semantics/article |
format |
article |
status_str |
publishedVersion |
dc.identifier.uri.fl_str_mv |
https://hdl.handle.net/10216/67420 |
url |
https://hdl.handle.net/10216/67420 |
dc.language.iso.fl_str_mv |
eng |
language |
eng |
dc.relation.none.fl_str_mv |
09596518 10.1243/09596518JSCE203 |
dc.rights.driver.fl_str_mv |
info:eu-repo/semantics/openAccess |
eu_rights_str_mv |
openAccess |
dc.format.none.fl_str_mv |
application/pdf |
dc.source.none.fl_str_mv |
reponame:Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) instname:Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informação instacron:RCAAP |
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Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informação |
instacron_str |
RCAAP |
institution |
RCAAP |
reponame_str |
Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) |
collection |
Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) |
repository.name.fl_str_mv |
Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) - Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informação |
repository.mail.fl_str_mv |
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1799135624584757249 |