Physical interpretation of independent component analysis in structural dynamics

被引：204

作者：

Kerschen, G. ^{[1
]}

Poncelet, F. ^{[1
]}

Golinval, J. -C. ^{[1
]}

机构：

[1] Univ Liege, Dept Aerosp Engn & Mech, LTAS, B-4000 Cointe Ougree, Belgium

来源：

MECHANICAL SYSTEMS AND SIGNAL PROCESSING | 2007年 / 21卷 / 04期

关键词：

system identification; output-only modal analysis; blind source separation; independent component analysis;

D O I：

10.1016/j.ymssp.2006.07.009

中图分类号：

TH [机械、仪表工业];

学科分类号：

0802 ;

摘要：

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. (c) 2006 Elsevier Ltd. All rights reserved.

引用

页码：1561 / 1575

页数：15

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