Title
Detecting and quantifying the nonlinear and time-variant effects in FRF measurements using periodic excitationsDetecting and quantifying the nonlinear and time-variant effects in FRF measurements using periodic excitations
Author
Faculty/Department
Faculty of Applied Engineering Sciences
Publication type
article
Publication
Subject
Physics
Source (journal)
IEEE Transactions on Instrumentation and Measurement
Volume/pages
62(2013):12, p. 3361-3373
ISSN
0018-9456
ISI
000326979600025
Carrier
E
Target language
English (eng)
Full text (Publishers DOI)
Abstract
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.
E-info
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