A state space force identification method based on Markov parameters precise computation and regularization technique
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期刊论文
First Author:
Mao, Y. M.
Correspondence Author:
Mao, YM (reprint author), Dalian Univ Technol, State Key Lab Struct Anal Ind Equipment, Dalian, Peoples R China.
Co-author:
Guo, X. L.,Zhao, Yan
Date of Publication:
2010-07-19
Journal:
JOURNAL OF SOUND AND VIBRATION
Included Journals:
SCIE、EI、Scopus
Document Type:
J
Volume:
329
Issue:
15
Page Number:
3008-3019
ISSN No.:
0022-460X
Abstract:
A time domain force identification approach for linear system is proposed. This approach can found a highly precise force identification model within the scope of general computer precision while it does not cost much computing time. Although the force identification model is accurate, the force identification process, like other inverse methods, is still ill-posed due to the inversion process and the white noise in measured structural responses. The singular value decomposition is used to reveal the intrinsically matter of the ill-posedness of force identification problem and a regularization technique is utilized to deal with this issue. Finally, the proposed method with the aid of regularization technique is successfully applied to identify the input forces in two numerical simulations. Crown Copyright (C) 2010 Published by Elsevier Ltd. All rights reserved.
Translation or Not:
no
