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Entropy 2014, 16(10), 5400-5415; doi:10.3390/e16105400

Performance Degradation Assessment of Rolling Element Bearings Based on an Index Combining SVD and Information Exergy

1
National Center for Materials Service Safety, University of Science and Technology Beijing, Beijing 100083, China
2
School of Mechanical Engineering, University of Science and Technology Beijing, Beijing 100083, China
3
Department of Industrial and Manufacturing Engineering, Wichita State University, Wichita, KS 67226, USA
*
Author to whom correspondence should be addressed.
Received: 21 July 2014 / Revised: 15 September 2014 / Accepted: 10 October 2014 / Published: 16 October 2014
(This article belongs to the Special Issue Exergy: Analysis and Applications)
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Abstract

Performance degradation assessment of rolling element bearings is vital for the reliable and cost-efficient operation and maintenance of rotating machines, especially for the implementation of condition-based maintenance (CBM). For robust degradation assessment of rolling element bearings, uncertainties such as those induced from usage variations or sensor errors must be taken into account. This paper presents an information exergy index for bearing performance degradation assessment that combines singular value decomposition (SVD) and the information exergy method. Information exergy integrates condition monitoring information of multiple instants and multiple sensors, and thus performance degradation assessment uncertainties are reduced and robust degradation assessment results can be obtained using the proposed index. The effectiveness and robustness of the proposed information exergy index are validated through experimental case studies. View Full-Text
Keywords: performance degradation assessment; information exergy index; rolling element bearing; singular value decomposition; condition-based maintenance performance degradation assessment; information exergy index; rolling element bearing; singular value decomposition; condition-based maintenance
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This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. (CC BY 4.0).

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Zhang, B.; Zhang, L.; Xu, J.; Wang, P. Performance Degradation Assessment of Rolling Element Bearings Based on an Index Combining SVD and Information Exergy. Entropy 2014, 16, 5400-5415.

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