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De-noising of Damage Signal in Wire Rope Based on Adaptive Lifting Wavelet
Zhan Weixia 1 * #,Tan Jiwen 2,Wen Yan 2
1.College of Mechanical Engineering,Qingdao Technological Univercity
2.College of Mechanical Engineering,Qingdao Technological Univercity,Qingdao 266033
*Correspondence author
#Submitted by
Subject:
Funding: Supported by the Specialized Research Fund for the Doctoral Program of Higher Education of China （No.Grant No. 200804290001）
Opened online: 8 June 2011
Accepted by: none
Citation: Zhan Weixia,Tan Jiwen,Wen Yan.De-noising of Damage Signal in Wire Rope Based on Adaptive Lifting Wavelet[OL]. [ 8 June 2011] http://en.paper.edu.cn/en_releasepaper/content/4430494
 
 
At the basis of the adaptive lifting wavelet transform, a method was proposed for solving the problem of noise suppression of the wire rope damage signals. A wavelet with damage property was constructed via lifting scheme, that is,the adaptive update-filter and the adaptive predict-filter were designed using the statistics information of the wire rope damage signals. And the compromise algorithm between software-threshold and hard-threshold was used in the threshold processing. The traditional wavelet and the above proposed transform are applied in de-noising of the practical acquisition of wire rope damage signal. The contrast experiments show that the noise elimination with the improved lifting scheme is better than that achieved by traditional wavelet transform. Moreover, this presented scheme retains the effective information in the break signals and greatly improves the design flexibility and the process speed.
Keywords:Lifting Wavelet; AdaptiveWire Rope; Damage Signal; De-noising
 
 
 

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