A comparison of the performance of modern modal data analysis methods on test data from the Voyager Jupiter/Saturn payload is presented. Four different test/data-analysis combinations are compared - multiple-point sine excitation tests, single-point random-excitation tests using two different techniques of manipulating Fourier transform data, and a time-domain method for analyzing random data. Results indicate that all four methods can give comparable results. Of the four, the time-domain approach detects more modes in the test data and, at the same time, shows the greatest promise for reducing the time and cost of modal testing.
Comparison of modal test methods on the Voyager payload
Society of Automotive Engineers, Aerospace Meeting ; 1978 ; San Diego, CA
1978-11-01
Conference paper
No indication
English
Comparison of Modal Test Methods on the Voyager Payload
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