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Rolling Bearing Fault Diagnosis Based on Local Mean Decomposition Multi-scale Fuzzy Entropy and Grey Similar Incidence |
MENG Zong,ZHAO Dong-fang,LI Jing,XIONG Jing-ming,LIU Shuang |
Key Laboratory of Measurement Technology and Instrumentation of Hebei Province, Yanshan University, Qinhuangdao, Hebei 066004, China |
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Abstract A rolling bearing fault diagnosis method based on local mean decomposition(LMD) of multi-scale fuzzy entropy and grey similar incidence is discussed. In this method, the fault signal is decomposed into several product functions (PF) adaptively, and the multi-scale fuzzy entropies of the PF components covering contain main fault information, which is calculated to get the fault feature vectors. By calculating the grey similar incidence of the sample to be identified and the standard fault pattern, it is realized that the judgement of rolling bearing fault types and damage degree. Compared with the method based on LMD fuzzy entropy and grey similar incidence, the experimental results show that the method based LMD multi-scale fuzzy entropy and grey similar incidence can identify rolling bearing running state efficiently and realize rolling bearing fault diagnosis.
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Received: 27 June 2016
Published: 11 February 2018
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Corresponding Authors:
Zong MENG
E-mail: mzysu@ysu.edu.cn
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