Title
Automatic vibration mode tracking using a scanning laser Doppler vibrometer Automatic vibration mode tracking using a scanning laser Doppler vibrometer
Author
Faculty/Department
Faculty of Applied Engineering Sciences
Publication type
article
Publication
Barking ,
Subject
Engineering sciences. Technology
Source (journal)
Optics and lasers in engineering. - Barking
Volume/pages
42(2004) :3 , p. 315-326
ISSN
0143-8166
ISI
000222067100006
Carrier
E
Target language
English (eng)
Full text (Publishers DOI)
Abstract
Optical measurement techniques are being used more and more for quality control in the production process. An important problem when trying to implement optical measurement systems, and in particular the scanning laser Doppler vibrometer (SLDV) which is considered in this paper, is that user interaction is always required. The need for user interaction implies an increase in testing time and cost and also brings an additional source of variability of the test results. In this article, a completely autonomous test procedure is developed to track the vibration behavior of a product during the production process (this includes automatic laser focussing, position calibration, object recognition, grid generation and mode estimation). The proposed procedure typically requires a few minutes only to automatically determine a high-resolution model of the vibration behavior. The method will be validated on measurements of an electronic circuit board. (C) 2003 Elsevier Ltd. All rights reserved.
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