Frequency-domain subspace identification for nonlinear mechanical systems

被引：97

作者：

Noel, J. P. ^{[1
]}

Kerschen, G. ^{[1
]}

机构：

[1] Univ Liege, Dept Aerosp & Mech Engn, S3L, B-4000 Liege, Belgium

来源：

MECHANICAL SYSTEMS AND SIGNAL PROCESSING | 2013年 / 40卷 / 02期

关键词：

Nonlinear system identification; Subspace method; Frequency domain; Characterisation criterion; Numerical and experimental data; MODELS;

D O I：

10.1016/j.ymssp.2013.06.034

中图分类号：

TH [机械、仪表工业];

学科分类号：

0802 ;

摘要：

This paper introduces a new frequency-domain subspace-based method for the identification of nonlinear mechanical systems. The technique exploits frequency-domain data and interprets nonlinearities as feedback forces exciting the underlying linear system. It is first demonstrated using two academic examples, namely a Duffing oscillator and a five-degree-of-freedom system comprising two nonlinearities. The identification of an experimental beam exhibiting geometrically nonlinear behaviour is then addressed. (C) 2013 Elsevier Ltd. All rights reserved.

引用

页码：701 / 717

页数：17

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