Design of robust AMB controllers for rotors subjected to varying and uncertain seal forces

This paper demonstrates the design and simulation results of model based controllers for AMB systems, subjected to uncertain and changing dynamic seal forces. Specifically, a turbocharger with a hole-pattern seal mounted across the balance piston is considered. The dynamic forces of the seal, which...

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Autores principales:	Jonas LAURIDSEN, Ilmar SANTOS
Formato:	article
Lenguaje:	EN
Publicado:	The Japan Society of Mechanical Engineers 2017
Materias:	uncertain dynamic seal forces robust control lpv control amb turboexpander holepattern seal fluid interaction Mechanical engineering and machinery TJ1-1570
Acceso en línea:	https://doaj.org/article/42703dcc9f7a450abc941354a3ed7efd
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spelling	oai:doaj.org-article:42703dcc9f7a450abc941354a3ed7efd2021-11-26T07:11:27ZDesign of robust AMB controllers for rotors subjected to varying and uncertain seal forces2187-974510.1299/mej.16-00618https://doaj.org/article/42703dcc9f7a450abc941354a3ed7efd2017-05-01T00:00:00Zhttps://www.jstage.jst.go.jp/article/mej/4/5/4_16-00618/_pdf/-char/enhttps://doaj.org/toc/2187-9745This paper demonstrates the design and simulation results of model based controllers for AMB systems, subjected to uncertain and changing dynamic seal forces. Specifically, a turbocharger with a hole-pattern seal mounted across the balance piston is considered. The dynamic forces of the seal, which are dependent on the operational conditions, have a significant effect on the overall system dynamics. Furthermore, these forces are considered uncertain. The nominal and the uncertainty representation of the seal model are established using results from conventional modelling approaches, i.e. Computational Fluid Dynamics (CFD) and Bulkflow, and experimental results. Three controllers are synthesized: I) An H∞ controller based on nominal plant representation, II) A μ controller, designed to be robust against uncertainties in the dynamic seal model and III) a Linear Parameter Varying (LPV) controller, designed to provide a unified performance over a large operational speed range using the operational speed as the scheduling parameter. Significant performance improvement is shown for robust control, incorporating model uncertainty, compared to nominal model based control.Jonas LAURIDSENIlmar SANTOSThe Japan Society of Mechanical Engineersarticleuncertain dynamic seal forcesrobust controllpv controlambturboexpanderholepattern sealfluid interactionMechanical engineering and machineryTJ1-1570ENMechanical Engineering Journal, Vol 4, Iss 5, Pp 16-00618-16-00618 (2017)
institution	DOAJ
collection	DOAJ
language	EN
topic	uncertain dynamic seal forces robust control lpv control amb turboexpander holepattern seal fluid interaction Mechanical engineering and machinery TJ1-1570
spellingShingle	uncertain dynamic seal forces robust control lpv control amb turboexpander holepattern seal fluid interaction Mechanical engineering and machinery TJ1-1570 Jonas LAURIDSEN Ilmar SANTOS Design of robust AMB controllers for rotors subjected to varying and uncertain seal forces
description	This paper demonstrates the design and simulation results of model based controllers for AMB systems, subjected to uncertain and changing dynamic seal forces. Specifically, a turbocharger with a hole-pattern seal mounted across the balance piston is considered. The dynamic forces of the seal, which are dependent on the operational conditions, have a significant effect on the overall system dynamics. Furthermore, these forces are considered uncertain. The nominal and the uncertainty representation of the seal model are established using results from conventional modelling approaches, i.e. Computational Fluid Dynamics (CFD) and Bulkflow, and experimental results. Three controllers are synthesized: I) An H∞ controller based on nominal plant representation, II) A μ controller, designed to be robust against uncertainties in the dynamic seal model and III) a Linear Parameter Varying (LPV) controller, designed to provide a unified performance over a large operational speed range using the operational speed as the scheduling parameter. Significant performance improvement is shown for robust control, incorporating model uncertainty, compared to nominal model based control.
format	article
author	Jonas LAURIDSEN Ilmar SANTOS
author_facet	Jonas LAURIDSEN Ilmar SANTOS
author_sort	Jonas LAURIDSEN
title	Design of robust AMB controllers for rotors subjected to varying and uncertain seal forces
title_short	Design of robust AMB controllers for rotors subjected to varying and uncertain seal forces
title_full	Design of robust AMB controllers for rotors subjected to varying and uncertain seal forces
title_fullStr	Design of robust AMB controllers for rotors subjected to varying and uncertain seal forces
title_full_unstemmed	Design of robust AMB controllers for rotors subjected to varying and uncertain seal forces
title_sort	design of robust amb controllers for rotors subjected to varying and uncertain seal forces
publisher	The Japan Society of Mechanical Engineers
publishDate	2017
url	https://doaj.org/article/42703dcc9f7a450abc941354a3ed7efd
work_keys_str_mv	AT jonaslauridsen designofrobustambcontrollersforrotorssubjectedtovaryinganduncertainsealforces AT ilmarsantos designofrobustambcontrollersforrotorssubjectedtovaryinganduncertainsealforces
_version_	1718409714790825984

Design of robust AMB controllers for rotors subjected to varying and uncertain seal forces

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