Publication
Title
Detecting a time-varying behavior in frequency response function measurements
Author
Abstract
This paper provides data-driven tools to detect and quantify approximately the influence of the time variation of a system under test in classical frequency response function (FRF) measurements. To achieve this, the best linear time-invariant approximation of a linear time-varying system is defined and is estimated using existing FRF estimators. An analysis of the residuals of the latter estimation reveals the frequency band in which the contributions from the time variation dominates the disturbing measurement noise and, thus, is significant. All concepts are illustrated on a simulation and real measurement examples.
Language
English
Source (journal)
IEEE Transactions on Instrumentation and Measurement
Publication
2012
ISSN
0018-9456
1557-9662
Volume/pages
61:8(2012), p. 2132-2143
ISI
000306519900008
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