期刊
EXPERT SYSTEMS WITH APPLICATIONS
卷 35, 期 4, 页码 1593-1600出版社
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.eswa.2007.08.072
关键词
feature selection; superior feature; improved distance evaluation technique; adaptive neuro-fuzzy inference system; fault diagnosis
类别
资金
- National Nature Science Foundation of China [50335030]
- National Basic Research Program of China [2005CB724106]
This paper presents a new approach to intelligent fault diagnosis based on statistics analysis, an improved distance evaluation technique and adaptive neuro-fuzzy inference system (ANFIS). The approach consists of three stages. First, different features, including time-domain statistical characteristics, frequency-domain statistical characteristics and empirical mode decomposition (EMD) energy entropies, are extracted to acquire more fault characteristic information. Second, an improved distance evaluation technique is proposed, and with it, the most superior features are selected from the original feature set. Finally, the most superior features are fed into ANFIS to identify different abnormal cases. The proposed approach is applied to fault diagnosis of rolling element bearings, and testing results show that the proposed approach can reliably recognise different fault categories and severities. Moreover, the effectiveness of the proposed feature selection method is also demonstrated by the testing results. (C) 2007 Elsevier Ltd. All rights reserved.
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