Title
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Detecting and quantifying the nonlinear and time-variant effects in FRF measurements using periodic excitations
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Author
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Abstract
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Frequency response function (FRF) measurements are very often used to get a quick insight into the dynamic behavior of complex systems; even if it is known that these systems are only approximately linear and time-invariant. Therefore, it is important to detect and quantify the deviation from the ideal linear time-invariant framework that is inherent to the concept of an FRF. This paper presents a method to detect and quantify the nonlinear and time-variant effects in FRF measurements using periodic excitations. The proposed method can handle noisy input, noisy output data, and nonlinear time-variant systems operating in feedback. |
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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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2013
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ISSN
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0018-9456
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DOI
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10.1109/TIM.2013.2267457
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Volume/pages
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62
:12
(2013)
, p. 3361-3373
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ISI
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000326979600025
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Full text (Publisher's DOI)
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