Reference : Second-order blind identification for operational modal analysis

	Document type :	Diverses speeches and writings : Conference given outside the academic context
	Discipline(s) :	Physical, chemical, mathematical & earth Sciences : Physics Physical, chemical, mathematical & earth Sciences : Mathematics Engineering, computing & technology : Mechanical engineering
	To cite this reference:	http://hdl.handle.net/2268/18326

Title :	Second-order blind identification for operational modal analysis
Language :	English
Author, co-author :	Poncelet, Fabien [Université de Liège - ULg > Département d'aérospatiale et mécanique > LTAS - Vibrations et identification des structures >]
	Kerschen, Gaëtan [Université de Liège - ULg > Département d'aérospatiale et mécanique > Laboratoire de structures et systèmes spatiaux >]
	Golinval, Jean-Claude [Université de Liège - ULg > Département d'aérospatiale et mécanique > LTAS - Vibrations et identification des structures >]
	Marin, F. [V2i S.A > > > >]
Publication date :	Sep-2005
Page number :	7
Audience :	International
Event name :	ASME International Design Engineering Technical Conferences
Event date :	September 4-7, 2007
Event place (city) :	Las Vegas, Nevada
Event country :	USA
Keywords :	[en] operational modal analysis (OMA) ; Second-Order Blind Identification
Abstract :	[en] For modal analysis of large structures, it is unpractical and expensive to use artificial excitation (e.g., shakers). However, engineering structures are most often subject to ambient loads(e.g., traffic and wind) that can be exploited for modal parameter estimation. One difficulty is that the actual loading conditions cannot generally be measured, and output-only measurements are available. This paper proposes to explore the utility of blind source separation (BSS) techniques for operational modal analysis. The basic idea of BSS is to recover unobserved source signals from their observed mixtures. The feasibility and practicality of the proposed method are demonstrated using an experimental application.
Target :	Researchers ; Professionals ; Students
Permalink :	http://hdl.handle.net/2268/18326

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