Title
FRF measurements on slowly time-varying systems using multisines with non-uniformly spaced harmonics FRF measurements on slowly time-varying systems using multisines with non-uniformly spaced harmonics
Author
Faculty/Department
Faculty of Applied Engineering Sciences
Publication type
conferenceObject
Publication
New York, N.Y. :IEEE, [*]
Subject
Engineering sciences. Technology
Source (book)
IEEE International Instrumentation and Measurement Technology Conference (I2MTC), May 06-09, 2013, Minneapolis
ISSN
1091-5281
ISBN - Hoofdstuk
978-1-4673-4621-4
ISI
000326900400234
Carrier
E
Target language
English (eng)
Abstract
Recently [1] a method has been developed to detect and quantify the influence of time-variation in frequency response function measurements using random excitations. This method can also be applied to random phase multisine excitations, provided uniformly spaced excited harmonics. However, in quite some applications a non-uniform 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. In this paper we extend the results of [1] to random phase muItisines with non-uniformly spaced harmonics.
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