Source location in plates based on the multiple sensors array method and wavelet analysis

A new method for impact source localization in a plate is proposed based on the multiple signal classification (MUSIC) and wavelet analysis. For source localization, the direction of arrival of the wave caused by an impact on a plate and the distance between impact position and sensor should be esti...

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Bibliographic Details
Published in:Journal of mechanical science and technology 2014, 28(1), , pp.1-8
Main Authors: Yang, Hongjun, Shin, Tae Jin, Lee, Sangkwon
Format: Article
Language:English
Subjects:
Control
Direction of arrival
Dynamical Systems
Elastodynamics
Engineering
Group velocity
Industrial and Production Engineering
Localization
Mechanical Engineering
Plates
Position (location)
Time delay
Vibration
Wavelet analysis
기계공학
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Summary:A new method for impact source localization in a plate is proposed based on the multiple signal classification (MUSIC) and wavelet analysis. For source localization, the direction of arrival of the wave caused by an impact on a plate and the distance between impact position and sensor should be estimated. The direction of arrival can be estimated accurately using MUSIC method. The distance can be obtained by using the time delay of arrival and the group velocity of the Lamb wave in a plate. Time delay is experimentally estimated using the continuous wavelet transform for the wave. The elastodynamic theory is used for the group velocity estimation.
ISSN:1738-494X
1976-3824
DOI:10.1007/s12206-013-0938-5