Publication
Title
Detection and quantification of the influence of time variation in frequency response function measurements using arbitrary excitations
Author
Abstract
This paper presents a nonparametric method for detecting and quantifying the influence of time variation in frequency response function measurements. The method is based on the estimation of the best linear time-invariant (BLTI) approximation of a linear time-variant (LTV) system from known input, noisy output data. The key idea consists in reformulating the single-input, single-output time-variant problem as a multiple-input, single-output time-invariant problem. In addition to the BLTI approximation of the LTV system, the contribution of the disturbing noise, the leakage error, and the time-varying effects at the output is also quantified. As such, the approximation error of the time-invariant framework is known.
Language
English
Source (journal)
IEEE Transactions on Instrumentation and Measurement
Publication
2012
ISSN
0018-9456
1557-9662
Volume/pages
61:12(2012), p. 3387-3395
ISI
000311352900030
Full text (Publisher's DOI)
UAntwerpen
Faculty/Department
Publication type
Subject
External links
Web of Science
Record
Identification
Creation 14.09.2015
Last edited 09.09.2017