Assessment of bearing performance degradation via extension and EEMD combined approach

As a key component in rotating machinery, the operating reliability of bearing influences the performance and service life of the equipment directly. In order to describe bearing performance degradation (BPD) process effectively, an assessment approach combining extension and ensemble empirical mode...

Full description

Saved in:
Bibliographic Details
Published inJournal of Central South University Vol. 24; no. 5; pp. 1155 - 1163
Main Authors Liu, Yu-mei, Zhao, Cong-cong, Xiong, Ming-ye, Zhao, Ying-hui, Qiao, Ning-guo, Tian, Guang-dong
Format Journal Article
LanguageEnglish
Published Changsha Central South University 01.05.2017
Springer Nature B.V
Subjects
Bearing
Component reliability
Correlation analysis
Degradation
Empirical analysis
Engineering
Feature extraction
Functions (mathematics)
Mathematical analysis
Metallic Materials
Performance degradation
Rotating machinery
Service life
Statistics
Test procedures
Time domain analysis
performance degradation assessment
extension
mathematical statistics
ensemble empirical mode decomposition
bearing
Online AccessGet full text
ISSN2095-2899
2227-5223
DOI10.1007/s11771-017-3518-5

Cover

More Information
Summary:As a key component in rotating machinery, the operating reliability of bearing influences the performance and service life of the equipment directly. In order to describe bearing performance degradation (BPD) process effectively, an assessment approach combining extension and ensemble empirical mode decomposition (EEMD) was proposed. First, the extension was utilized to construct the matter-element of bearing operating state, and the energy moment of intrinsic mode functions (IMFs) was used as characteristic parameter of the matter-element. Then, to determine classical domains of characteristic parameters, the mathematical statistics method was adopted. Finally, the BPD was analyzed qualitatively and quantitatively according to the comprehensive correlation degree of bearing current operating state related to its healthy state. The analytic results of bearing test-rig show that the proposed method indicates the incipient fault approximately occuring in the 81st hour, and the method also quantitatively presents the degree of BPD. By contrast, the BPD assessment based on time-domain features extraction method could not achieve the above two results effectively.
Bibliography:ObjectType-Article-1
SourceType-Scholarly Journals-1
ObjectType-Feature-2
content type line 14
ISSN:2095-2899
2227-5223
DOI:10.1007/s11771-017-3518-5