机械科学与技术2012，Vol.31Issue(6)：906-909,4.
一种分段频域子空间模态参数辨识算法应用
A New Modal Parameter Identification Algorithm with Segment Frequency Domain Subspace and Its Application
李永军 1马立元 1王天辉 1段永刚1
作者信息
- 1. 军械工程学院导弹工程系,石家庄050003
- 折叠
摘要
Abstract
In order to overcome the application restriction of frequency domain subspace algorithm in modal parameter identification,a new subspace algorithm with segments of frequency domain（SFDS） is put forward in this paper.The SFDS algorithm segments the frequency domain data and re-computes the broad sense arithmetic operators to construct the new state equation and identifies the modal parameters.The simulation validation is carried out.The SFDS algorithm is used to identify the parameters of some variable section shaft.The result is consistent with the finite element result,so it is verified that the SFDS algorithm is effective.It is concluded that the SFDS algorithm can significantly reduce the computation volume,so can be realized on the common computing device.关键词
模态参数辨识/频域子空间/分段/有限元Key words
modal parameter identification/frequency domain subspace/segment/finite element分类
信息技术与安全科学引用本文复制引用
李永军,马立元,王天辉,段永刚..一种分段频域子空间模态参数辨识算法应用[J].机械科学与技术,2012,31(6):906-909,4.
