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Comparison of two dissimilar modal identification techniquesRecent laboratory results using a refined phase resonance method and the eigensystem realization algorithm on the same test structure are reported. These methods are dissimilar modal identification techniques suitable for future large spacecraft. The theory, application approach, and results obtained for each technique are summarized and compared. Although both methods worked well in this investigation, significant differences occurred in some identified mode shapes. Comparison of independently derived modal parameters provides the means for disclosing such discrepancies in flight projects.
Document ID
19920064110
Acquisition Source
Legacy CDMS
Document Type
Reprint (Version printed in journal)
Authors
Pappa, Richard S.
(NASA Langley Research Center Hampton, VA, United States)
Schenk, Axel
(NASA Langley Research Center Hampton, VA, United States)
Niedbal, Norbert
(NASA Langley Research Center Hampton, VA, United States)
Klusowski, Erhard
(DLR Goettingen, Federal Republic of Germany, United States)
Date Acquired
August 15, 2013
Publication Date
August 1, 1992
Publication Information
Publication: Journal of Guidance, Control, and Dynamics
Volume: 15
Issue: 4, Ju
ISSN: 0731-5090
Subject Category
Spacecraft Design, Testing And Performance
Accession Number
92A46734
Distribution Limits
Public
Copyright
Other

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