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Title
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Quantifying the time-variation in FRF measurements using random phase multisines with nonuniformly spaced harmonics
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Author
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Abstract
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| Recently methods have been developed to detect and quantify the influence of time-variation in frequency response function measurements using random excitations. These methods can also be applied to random phase multisine excitations, provided uniformly spaced excited harmonics. However, in quite a few applications, a nonuniform harmonic spacing is required, for example, a quasi-logarithmic spacing to cover a large frequency range, and a random spacing to detect and quantify nonlinear distortions. Therefore, in this paper, the results are extended to random phase multisines with nonuniformly spaced harmonics. An in-depth study of the noise sensitivity (bias and variance) of the proposed procedure is made. |
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Language
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English
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Source (journal)
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IEEE transactions on instrumentation and measurement. - New York, N.Y.
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Publication
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New York, N.Y.
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2014
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ISSN
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0018-9456
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DOI
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10.1109/TIM.2013.2283571
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Volume/pages
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63
:5
(2014)
, p. 1384-1394
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ISI
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000334608900042
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Full text (Publisher's DOI)
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