Dynamic behaviour and stability analysis of a compensated aerostatic pad

Thanks to their low friction, aerostatic pads have important applications in precision positioning systems and linear guides. A simple and cheap solution to increase the static stiffness of aerostatic pads is to add a proper designed pneumatic valve to regulate the air flow supplied to the bearing....

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Autores principales:	Colombo Federico, Lentini Luigi, Raparelli Terenziano, Trivella Andrea, Viktorov Vladimir
Formato:	article
Lenguaje:	EN FR
Publicado:	EDP Sciences 2021
Materias:	Environmental sciences GE1-350
Acceso en línea:	https://doaj.org/article/cef81400de6d4eb79e031b7b47557580
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id	oai:doaj.org-article:cef81400de6d4eb79e031b7b47557580
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spelling	oai:doaj.org-article:cef81400de6d4eb79e031b7b475575802021-11-08T15:18:51ZDynamic behaviour and stability analysis of a compensated aerostatic pad2267-124210.1051/e3sconf/202131205003https://doaj.org/article/cef81400de6d4eb79e031b7b475575802021-01-01T00:00:00Zhttps://www.e3s-conferences.org/articles/e3sconf/pdf/2021/88/e3sconf_ati2021_05003.pdfhttps://doaj.org/toc/2267-1242Thanks to their low friction, aerostatic pads have important applications in precision positioning systems and linear guides. A simple and cheap solution to increase the static stiffness of aerostatic pads is to add a proper designed pneumatic valve to regulate the air flow supplied to the bearing. However, integrating aerostatic pads with additional devices can reduce its dynamic performance. This paper presents a numerical study on the dynamic behaviour and stability a commercial aerostatic pad controlled by a custom-built diaphragm valve. The bearing performance is studied by means of a lumped parameters model. Air bearing stiffness and damping are analysed in the frequency domain. Subsequently, the lumped model is linearized to investigate the stability of the system by means of Routh-Hurwitz method. The performance of the controlled air pad is compared to that of a simple commercial air pad.Colombo FedericoLentini LuigiRaparelli TerenzianoTrivella AndreaViktorov VladimirEDP SciencesarticleEnvironmental sciencesGE1-350ENFRE3S Web of Conferences, Vol 312, p 05003 (2021)
institution	DOAJ
collection	DOAJ
language	EN FR
topic	Environmental sciences GE1-350
spellingShingle	Environmental sciences GE1-350 Colombo Federico Lentini Luigi Raparelli Terenziano Trivella Andrea Viktorov Vladimir Dynamic behaviour and stability analysis of a compensated aerostatic pad
description	Thanks to their low friction, aerostatic pads have important applications in precision positioning systems and linear guides. A simple and cheap solution to increase the static stiffness of aerostatic pads is to add a proper designed pneumatic valve to regulate the air flow supplied to the bearing. However, integrating aerostatic pads with additional devices can reduce its dynamic performance. This paper presents a numerical study on the dynamic behaviour and stability a commercial aerostatic pad controlled by a custom-built diaphragm valve. The bearing performance is studied by means of a lumped parameters model. Air bearing stiffness and damping are analysed in the frequency domain. Subsequently, the lumped model is linearized to investigate the stability of the system by means of Routh-Hurwitz method. The performance of the controlled air pad is compared to that of a simple commercial air pad.
format	article
author	Colombo Federico Lentini Luigi Raparelli Terenziano Trivella Andrea Viktorov Vladimir
author_facet	Colombo Federico Lentini Luigi Raparelli Terenziano Trivella Andrea Viktorov Vladimir
author_sort	Colombo Federico
title	Dynamic behaviour and stability analysis of a compensated aerostatic pad
title_short	Dynamic behaviour and stability analysis of a compensated aerostatic pad
title_full	Dynamic behaviour and stability analysis of a compensated aerostatic pad
title_fullStr	Dynamic behaviour and stability analysis of a compensated aerostatic pad
title_full_unstemmed	Dynamic behaviour and stability analysis of a compensated aerostatic pad
title_sort	dynamic behaviour and stability analysis of a compensated aerostatic pad
publisher	EDP Sciences
publishDate	2021
url	https://doaj.org/article/cef81400de6d4eb79e031b7b47557580
work_keys_str_mv	AT colombofederico dynamicbehaviourandstabilityanalysisofacompensatedaerostaticpad AT lentiniluigi dynamicbehaviourandstabilityanalysisofacompensatedaerostaticpad AT raparelliterenziano dynamicbehaviourandstabilityanalysisofacompensatedaerostaticpad AT trivellaandrea dynamicbehaviourandstabilityanalysisofacompensatedaerostaticpad AT viktorovvladimir dynamicbehaviourandstabilityanalysisofacompensatedaerostaticpad
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Dynamic behaviour and stability analysis of a compensated aerostatic pad

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