A Demodulating Approach Based on Local Mean Decomposition and Combined Morlet Wavelets and its Application in Mechanical Fault Diagnosis

Hui Mei Li; Zhao Zhong Cai; Gang An

doi:10.4028/www.scientific.net/AMM.239-240.1039

Paper Titles

Using Improved Wavelet Networks in Image Compression
p.1018

Communication Performance of RFID System and Anti-Interference in the Multipath Rayleigh Fading Channel
p.1022

Cultural-Based Multi-Objective Particle Swarm Optimization for EEG Channel Reduction in Multi-Class Brain-Computer Interfaces
p.1027

Classification of EEG Signals Using Filter Bank Common Spatial Pattern Based on Fisher and Laplacian Criteria
p.1033

A Demodulating Approach Based on Local Mean Decomposition and Combined Morlet Wavelets and its Application in Mechanical Fault Diagnosis
p.1039

Comparing Different Means of Signal Treatment for Improving the Detection Power in HPLC-UV-HG-AFS
p.1045

Extraction of Online Monitoring Signals by Lifting Wavelet in Digital Substation
p.1052

The Research of Signal Detection Method Based on LFMCW Lidar
p.1059

A Data Transmission Strategy Applied to Implantable Wireless System for Small Animal Monitoring
p.1064

HomeApplied Mechanics and MaterialsApplied Mechanics and Materials Vols. 239-240A Demodulating Approach Based on Local Mean...

A Demodulating Approach Based on Local Mean Decomposition and Combined Morlet Wavelets and its Application in Mechanical Fault Diagnosis

Abstract:

Local mean decomposition(LMD) as a new demodulating approach has some problems needing study and solution.This paper analyzed the overlapping phenomenon of product functions(PFs) generated when LMD decomposes signals through studying the adaptive filtering characteristic of LMD and numerical simulation. The results show that the overlapping phenomenon of PFs is general. Then in order to improve the demodulating effect of LMD, a new demodulating method based on LMD and combined Morlet wavelets was proposed and applied in gear fault diagnosis. The results show that this method is efficient.

You might also be interested in these eBooks

Measurement Technology and its Application

View Preview

Info:

Periodical:

Applied Mechanics and Materials (Volumes 239-240)

Pages:

1039-1044

DOI:

https://doi.org/10.4028/www.scientific.net/AMM.239-240.1039

Citation:

Cite this paper

Online since:

December 2012

Authors:

Hui Mei Li, Zhao Zhong Cai, Gang An

Keywords:

Combined Morlet Wavelet, Demodulation, Fault Diagnosis, Local Mean Decomposition (LMD), Overlapping of Component

Export:

RIS, BibTeX

Price:

Permissions CCC:

Request Permissions

Permissions PLS:

Request Permissions

Сopyright:

Citation:

References

[1] Smith J S: J.R. Soc.Interface Vol. 2(5)(2005), p.443

Google Scholar

[2] Baojia Chen,Zhengjia He, Xuefeng Chen et al: Meas.Sci.Technol Vol. 22(5)(2011), p.1

Google Scholar

[3] Daqian Ren.Study on Methods and System for Fault Characteristics Extraction of Rotating Machines Based on Local Mean Decomposition. Ph D Thesis. Zhejiang:Zhejiang University, 2008 (In Chinese)

Google Scholar

[4] Junsheng Cheng,Kang Zhang, Yu Yang et al: Vibration and Shock Vol. 28(5) (2009),p.13 (In Chinese)

Google Scholar

[5] Weibing Liu,Zhinong Li,Jing Jiang et al: Machine Tool and Hydraulics Vol. 39(1) (2011),p.128(In Chinese)

Google Scholar

[6] Yanxue Wang,Zhengjia He,Yanyang Zi: Meas.Sci.Technol Vol. 20(2) (2009),p.1

Google Scholar

[7] Yanxue Wang,Zhengjia He,Yanyang Zi: Journal of Vibration and Acoustics Vol.132 (2010),p.1

Google Scholar

[8] Tao Zhang,Renyong Wei,Zhiyong Li . Computer Measurement and Control Vol. 13(1) (2005), p.18(In Chinese)

Google Scholar