USING CROSS-CORRELATION THEORY TO EXTRACT MODAL PARAMETERS IN FREQUENCY- DOMAIN

作     者：ShenFan ZhengMin 等 

作者机构：InstituteofVibrationEngineeringRsearchNanjingUniversityofAeronauticesandAstronauticsNanjing210016China CollegeofCiviAviationNanjingUniversityofAeronauticsandAstronatuticsNajing 

出 版 物：《Chinese Journal of Mechanical Engineering》 (中国机械工程学报（英文版）)

年 卷 期：2003年第16卷第1期

页      面：83-86页

核心收录：

学科分类：08[工学] 080203[工学-机械设计及理论] 0802[工学-机械工程] 

基　　金：This project is supported by Aeronautics Foundation (No. 1152059), Civil Aviation Foundation (No.1007-272) the 9-th Five Plan of the Aeronautical Industrial Corporation (No.62.2.2.1), China 

主　　题：Modal identification Vibration testing Cross-correlation theory Operating conditions 

摘      要：Conventional modal parameter identifications are usually based on frequencyresponse functions, which require measurements of both the input force and the resulting ***, in many cases, only response data are available while the actual excitations (such aswind/wave load) are not measurable. Modal parameters estimation must base itself on response-onlydata. Over the past years, many time-domain modal parameter identification techniques fromoutput-only are proposed. A poly-reference frequency-domain modal identification scheme onresponse-only is presented. It is based on coupling the cross-correlation theory with conventionalfrequency-domain modal parameter extraction. An experiment using an airplane model is performed toverify the proposed method.