Article (Scientific journals)
Physical interpretation of independent component analysis in structural dynamics
Kerschen, Gaëtan; Poncelet, Fabien; Golinval, Jean-Claude
2007In Mechanical Systems and Signal Processing, 21, p. 1561–1575
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Keywords :
system identification; output-only modal analysis; Blind source separation; Independent component analysis
Abstract :
[en] This paper focuses on the relation between the vibration modes of mechanical systems and the modes computed through a blind source separation technique called independent component analysis (ICA). For free and random vibrations of weakly damped systems, a one-to-one relationship between the vibration modes and the ICA modes is demonstrated using the concept of virtual source. Based on this theoretical link, a time-domain structural system identification technique is proposed and is illustrated using numerical examples.
Disciplines :
Mathematics
Mechanical engineering
Physics
Author, co-author :
Kerschen, Gaëtan  ;  Université de Liège - ULiège > Département d'aérospatiale et mécanique > Laboratoire de structures et systèmes spatiaux
Poncelet, Fabien ;  Université de Liège - ULiège > Département d'aérospatiale et mécanique > LTAS - Vibrations et identification des structures
Golinval, Jean-Claude  ;  Université de Liège - ULiège > Département d'aérospatiale et mécanique > LTAS - Vibrations et identification des structures
Language :
English
Title :
Physical interpretation of independent component analysis in structural dynamics
Publication date :
2007
Journal title :
Mechanical Systems and Signal Processing
ISSN :
0888-3270
eISSN :
1096-1216
Publisher :
Academic Press, London, United Kingdom
Volume :
21
Pages :
1561–1575
Peer reviewed :
Peer Reviewed verified by ORBi
Available on ORBi :
since 18 August 2009

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