Envelope demodulation based on variational mode decomposition for gear fault diagnosis-Reference-Cited by-同舟云学术

Envelope demodulation based on variational mode decomposition for gear fault diagnosis

Published:2016-04-17 Issue:4 Volume:231 Page:864-870
ISSN:0954-4089
Container-title:Proceedings of the Institution of Mechanical Engineers, Part E: Journal of Process Mechanical Engineering
language:en
Short-container-title:Proceedings of the Institution of Mechanical Engineers, Part E: Journal of Process Mechanical Engineering

Author:

An Xueli¹,Zeng Hongtao²,Li Chaoshun³

Affiliation:

1. China Institute of Water Resources and Hydropower Research, Haidian District, Beijing, China

2. School of Power and Mechanical Engineering, Wuhan University, Wuhan, Hubei Province, China

3. College of Hydroelectric and Digitalization Engineering, Huazhong University of Science and Technology, Wuhan, Hubei Province, China

Abstract

A new time–frequency analysis method, based on variational mode decomposition, was investigated. When a gear fault occurs, its vibration signal is nonstationary, nonlinear, and exhibits complex modulation performance. According to the modulation characteristics of the gear vibration signal arising from faults therein, a gear fault diagnosis method based on variational mode decomposition and envelope analysis was proposed. The variational mode decomposition method can decompose a complex signal into several stable components. The obtained components were analyzed by envelope demodulation. According to the envelope spectrum, gear faults can be diagnosed. In essence, the variational mode decomposition method can decompose a multi-component signal into a number of single component amplitude modulation–frequency modulation signals. The method is suited to the handling of multi-component amplitude modulation–frequency modulation signals. The simulated signal and the actual gear fault vibration signals were analyzed. The results showed that the method can be effectively applied to gear fault diagnosis.

Publisher

SAGE Publications

Subject

Industrial and Manufacturing Engineering,Mechanical Engineering

Link

http://journals.sagepub.com/doi/pdf/10.1177/0954408916644271

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