Time-Frequency Analysis of Nonlinear Systems: The Skeleton Linear Model and the Skeleton Curves

doi:10.1115/1.1545768

IMECH-IR > 力学所知识产出(1956-2008)

	Time-Frequency Analysis of Nonlinear Systems: The Skeleton Linear Model and the Skeleton Curves
	Wang LL(王丽丽); Zhang JH(张景绘); Wang C(王超); Hu SY; Wang, LL (reprint author), Chinese Acad Sci, State Key Lab Nonlinear Mech, Beijing, Peoples R China.
发表期刊	Journal of Vibration and Acoustics
	2003
卷号	125 期号:2 页码:170-177
ISSN	1048-9002
摘要	The joint time-frequency analysis method is adopted to study the nonlinear behavior varying with the instantaneous response for a class of S.D.O.F nonlinear system. A time-frequency masking operator, together with the conception of effective time-frequency region of the asymptotic signal are defined here. Based on these mathematical foundations, a so-called skeleton linear model (SLM) is constructed which has similar nonlinear characteristics with the nonlinear system. Two skeleton curves are deduced which can indicate the stiffness and damping in the nonlinear system. The relationship between the SLM and the nonlinear system, both parameters and solutions, is clarified. Based on this work a new identification technique of nonlinear systems using the nonstationary vibration data will be proposed through time-frequency filtering technique and wavelet transform in the following paper.
学科领域	力学
DOI	10.1115/1.1545768
收录类别	SCI
语种	英语
WOS记录号	WOS:000182212500006
关键词[WOS]	HILBERT TRANSFORM ; VIBRATION
WOS研究方向	Acoustics ; Engineering ; Mechanics
WOS类目	Acoustics ; Engineering, Mechanical ; Mechanics
引用统计	被引频次：10[WOS] [WOS记录] [WOS相关记录]
文献类型	期刊论文
条目标识符	http://dspace.imech.ac.cn/handle/311007/17201
专题	力学所知识产出(1956-2008)
通讯作者	Wang, LL (reprint author), Chinese Acad Sci, State Key Lab Nonlinear Mech, Beijing, Peoples R China.
推荐引用方式 GB/T 7714	Wang LL,Zhang JH,Wang C,et al. Time-Frequency Analysis of Nonlinear Systems: The Skeleton Linear Model and the Skeleton Curves[J]. Journal of Vibration and Acoustics,2003,125,2,:170-177.
APA	王丽丽,张景绘,王超,Hu SY,&Wang, LL .(2003).Time-Frequency Analysis of Nonlinear Systems: The Skeleton Linear Model and the Skeleton Curves.Journal of Vibration and Acoustics,125(2),170-177.
MLA	王丽丽,et al."Time-Frequency Analysis of Nonlinear Systems: The Skeleton Linear Model and the Skeleton Curves".Journal of Vibration and Acoustics 125.2(2003):170-177.

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