Enhancements to the continuous wavelet transform for damping identifications on short signals
M. Boltežar and J. Slavič
Mechanical Systems and Signal Processing, Sep 2004, Volume 18, Issue 5, p. 1065-1076

download pdf   dx.doi.org/10.1016/j.ymssp.2004.01.004
Abstract
The edge-effect of the wavelet transform can present a serious limitation to the identification of damping. In an attempt to overcome the problem posed by the edge-effect, this paper presents three new methods that are incorporated into the definition of the continuous wavelet transform: the reflected-window method, the equal-window-area method and the adaptive-wavelet-function method. The effectiveness of these methods was tested on experimental data. It was found that with these methods the same rate of reliability could be achieved with a signal that was approximately three times shorter than the signal required by the classical CWT approach to damping identification.
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See also related papers:
[Damping identification with the Morlet-wave],
[Damping identification using a continuous wavelet transform: application to real data]
Authors
Professor

Miha Boltežar, PhD

  Ladisk, Faculty of Mechanical Engineering, University of Ljubljana
  miha.boltezar@fs.uni-lj.si
  +386 1 4771 608
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Professor

Janko Slavič, PhD

  Ladisk, Faculty of Mechanical Engineering, University of Ljubljana
  janko.slavic@fs.uni-lj.si
  +386 1 4771 226
jankoslavic     jankoslavic    
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