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An analog technique for the measurement of damping from transient decay signalsA tracking filter that includes an output that is logarithmically proportional to the amplitude of the filtered signal is used to measure the damping exponent of a transient decay. This method is analogous to the digital technique referred to as the moving-block or peak-plot method. The method is simple to use and quite accurate, avoids the numerical computations associated with similar digital techniques, but is constrained by the poor time-domain response characteristics of commercial tracking filters presently available.
Document ID
19760019364
Acquisition Source
Legacy CDMS
Document Type
Technical Memorandum (TM)
Authors
Bousman, W. G. (Army Air Mobility R and D Lab. Moffett Field, Calif., United States)
Date Acquired
September 3, 2013
Publication Date
June 1, 1976
Subject Category
Instrumentation And Photography
Report/Patent Number
NASA-TM-X-73121
A-6535
Accession Number
76N26452
Distribution Limits
Public
Copyright
Work of the US Gov. Public Use Permitted.

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