Identification of linear time-varying dynamical systems using Hilbert transform and empirical mode decomposition method

被引：46

作者：

Shi, Z. Y. ^{[1
]}

Law, S. S. ^{[1
]}

机构：

[1] Hong Kong Polytech Univ, Dept Civil & Struct Engn, Hunghom 0000, Hong Kong, Peoples R China

来源：

JOURNAL OF APPLIED MECHANICS-TRANSACTIONS OF THE ASME | 2007年 / 74卷 / 02期

关键词：

D O I：

10.1115/1.2188538

中图分类号：

O3 [力学];

学科分类号：

08 ; 0801 ;

摘要：

This paper addresses the identification of linear time-varying multi-degrees-of-freedom systems. The identification approach is based on the Hilbert transform and the empirical mode decomposition method with free vibration response signals. Three-different types of time-varying systems, i.e., smoothly varying, periodically varying, and abruptly varying stiffness and damping of a linear time-varying system, are studied. Numerical simulations demonstrate the effectiveness and accuracy of the proposed method with single- and multi-degrees-of-freedom dynamical systems.

引用

页码：223 / 230

页数：8

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