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Lookup NU author(s): Dr Aijun Yin,
Dr Bin Gao,
Dr Wai Lok Woo
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A novel approach for mechanical vibration signal de-noising filter using PDE and its numerical solution were presented. The proposed method is computationally fast compared with other conventional PDE-based de-noising methods. It enables: (i) by incorporating unconditional stable finite difference backward Euler scheme, the de-noising process has no requirements of grid ratio; (ii) developing variational matrix-based fast filter while the de-noising process can be completed instantly, which will be accomplished by only one iteration; and (iii) effective de-noising method for mechanical vibration signal interfered by Gauss white noise. The method is performed efficiently, and the de-noising tests on different artificial Gauss white noise as well as natural mechanical noise are conducted. Experimental tests have been rigorously compared with different de-noisingmethods to verify the efficacy of the proposed method. Copyright (C) 2015 John Wiley & Sons, Ltd.
Author(s): Yin AJ, Zhao L, Gao B, Woo WL
Publication type: Article
Publication status: Published
Journal: Mathematical Methods in the Applied Sciences
Print publication date: 01/12/2015
Online publication date: 12/03/2015
Acceptance date: 10/12/2014
ISSN (print): 0170-4214
ISSN (electronic): 1099-1476
Publisher: John Wiley & Sons Ltd.
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