Development of an on-line parameter estimation system using the discrete modal filterOngoing development of an automated system for monitoring the frequency and damping of time varying structural systems is discussed. A spatial filtering technique called the discrete modal filter is used to uncouple multiple response measurements into modal coordinate responses. Since the modal coordinate responses are the responses of single-degree-of-freedom systems, the frequency and damping may be accurately estimated with short data records. An on-line monitoring system is discussed which may be useful in a variety of applications. The focus in this paper is on the application to aircraft flight flutter testing.
Document ID
19940035833
Acquisition Source
Legacy CDMS
Document Type
Conference Paper
Authors
Shelley, S. J. (Cincinnati Univ. OH, United States)
Freudinger, L. C. (NASA Flight Research Facility Edwards, CA, United States)
Allemang, R. J. (Cincinnati Univ. OH, United States)
Date Acquired
August 16, 2013
Publication Date
January 1, 1992
Publication Information
Publication: In: International Modal Analysis Conference, 10th, San Diego, CA, Feb. 3-7, 1992, Proceedings. Vol. 1 (A94-12476 02-39)
Publisher: Society for Experimental Mechanics, Inc.