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2002•Acta Aeronautica Et Astronautica SinicaRequires access

MODAL PARAMETER EXTRACTION USING FREQUENCY DOMAIN POLY-REFERENCE METHOD UNDER OPERATIONAL CONDITIONS

Fan Shen

Open publisher page 1 citations

Abstract

It is difficult to measure the input forces of some operating structures. Only the operating response data can be used to identify modal parameters. A frequency domain poly reference modal identification method under operational conditions was presented on the basis of the cross correlation function of measured responses to solve the only output problem. The proposed method in this paper was applied to an airplane model.

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What this paper is about

It is difficult to measure the input forces of some operating structures. Only the operating response data can be used to identify modal parameters. A frequency domain poly reference modal identification method under operational conditions was presented on the basis of the cross correlation function of measured responses to solve the only output problem. The proposed method in this paper was applied to an airplane model.

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Available abstract

It is difficult to measure the input forces of some operating structures. Only the operating response data can be used to identify modal parameters. A frequency domain poly reference modal identification method under operational conditions was presented on the basis of the cross correlation function of measured responses to solve the only output problem. The proposed method in this paper was applied to an airplane model.

Key concepts: Modal, Frequency domain, Operational Modal Analysis, Modal testing, Frequency response, Modal analysis, Measure (data warehouse), Basis (linear algebra)

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