A new performance evaluation scheme for jet engine vibration signal denoising

被引：41

作者：

Sadooghi, Mohammad Saleh ^{[1
]}

Khadem, Siamak Esmaeilzadeh ^{[1
]}

机构：

[1] Tarbiat Modares Univ, Dept Mech Engn, Jalal Ale Ahmad Highway,POB 14115-111, Tehran, Iran

来源：

MECHANICAL SYSTEMS AND SIGNAL PROCESSING | 2016年 / 76-77卷

关键词：

Jet engine compressor; Vibration signal; Discrete wavelet transform; Thresholding; Denoising;

D O I：

10.1016/j.ymssp.2016.01.019

中图分类号：

TH [机械、仪表工业];

学科分类号：

0802 ;

摘要：

Denoising of a cargo-plane jet engine compressor vibration signal is investigated in this article. Discrete wavelet transform and two families of Donoho-Johnston and parameter method thresholding, are applied to vibration signal. Eighty four combinations of wavelet thresholding and mother wavelet are evaluated. A new performance evaluation scheme for optimal selection of mother wavelet and thresholding method combination is proposed in this paper, which is make a trade off between four performance criteria of signal to noise ratio, percentage root mean square difference, Cross-correlation, and mean square error. Dmeyer mother wavelet (dmey) combined with Rigorous SURE thresholding has the maximum trade off value and was selected as the most appropriate combination for denoising of the signal. It was shown that inappropriate combination leads to data losing. Also higher performance of proposed trade off with respect to other criteria was proven graphically. (C) 2016 Elsevier Ltd. All rights reserved.

引用

页码：201 / 212

页数：12

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