COMPARISON OF MODAL PARAMETER-ESTIMATION TECHNIQUES ON AIRCRAFT STRUCTURAL DATA

被引：10

作者：

COOPER, JE

机构：

[1] Materials and Structures Department, Royal Aerospace Establishment, Farnborough

来源：

MECHANICAL SYSTEMS AND SIGNAL PROCESSING | 1990年 / 4卷 / 02期

关键词：

D O I：

10.1016/0888-3270(90)90054-O

中图分类号：

TH [机械、仪表工业];

学科分类号：

0802 ;

摘要：

Five global time domain parameter estimation methods, least squares, double least squares, total least squares, correlation fit and Smith least squares were compared using the same set of impulse responses taken from the ground vibration test of an aircraft structure. The behaviour of the modal parameter estimates was investigated for changes in the solution order and number of data points analysed. The techniques produced comparable results for the dominant modes, although there were some differences in the estimates of the other modes. The correlation fit and Smith least squares approaches found equivalent estimates to the other methods while using much smaller computational model orders. © 1990.

引用

页码：157 / 172

页数：16

共 18 条

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