Paper Title:
Vibration Signal De-Noised by Alteration Wavelet Transform under Alpha Stable Distribution Environment
  Abstract

In vibration measure the signal processing system of Gaussian model was abnormal for the pulse noise environment. So it was necessary to find other model and transform the traditional signal processing method. Studies showed that the Alpha stable distribution was better to describe these non-Gaussian signals. After studying the property of Alpha stable distribution and the fractional lower order statistics theory, we altered the wavelet transform. The method was that the fractional lower order statistics replaced the 2-order statistics in the traditional wavelet algorithm. Experimental vibration measure system including some sensors on the spindle or other measure points collected the vibration signals and sent to computer. The results show that the alteration wavelet transform system can effectively restrain the pulse noise and reduce the signal distortion. The new signal processing system can achieve the generalized de-noising function including re-Gaussian distribution.

  Info
Periodical
Advanced Materials Research (Volumes 383-390)
Chapter
Chapter 20: Metrology and Measurement
Edited by
Wu Fan
Pages
5315-5320
DOI
10.4028/www.scientific.net/AMR.383-390.5315
Citation
X. Qin, D. F. Zha, "Vibration Signal De-Noised by Alteration Wavelet Transform under Alpha Stable Distribution Environment", Advanced Materials Research, Vols. 383-390, pp. 5315-5320, 2012
Online since
November 2011
Authors
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Price
$32.00
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