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Supervised by Ministry of Industry and Information Technology of The People's Republic of China Sponsored by Harbin Institute of Technology Editor-in-chief Yu Zhou ISSNISSN 1005-9113 CNCN 23-1378/T

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Morphology Similarity Distance for Bearing Fault Diagnosis Based on Multi-Scale Permutation Entropy
Author NameAffiliationPostcode
Jinbao Zhang School of Mechatronics Engineering, Harbin Institute of Technology 150001
Yongqiang Zhao* School of Mechatronics Engineering, Harbin Institute of Technology 150001
Lingxian Kong School of Mechatronics Engineering, Harbin Institute of Technology 150001
Ming Liu School of Mechatronics Engineering, Harbin Institute of Technology 150001
Abstract:
Bearings are crucial components in rotating machines, which have direct effects on industrial productivity and safety. To fast and accurately identify the operating condition of bearings, a novel method based on multi-scale permutation entropy (MPE) and morphology similarity distance (MSD) is proposed in this paper. Firstly, the MPE values of the original signals were calculated to characterize the complexity in different scales and they constructed feature vectors after normalization. Then, the MSD was employed to measure the distance among test samples from different fault types and the reference samples, and achieved classification with the minimum MSD. Finally, the proposed method was verified with two experiments concerning artificially seeded damage bearings and run-to-failure bearings, respectively. Different categories were considered for the two experiments and high classification accuracies were obtained. The experimental results indicate that the proposed method is effective and feasible in bearing fault diagnosis
Key words:  bearing fault diagnosis  multi-scale permutation entropy  morphology similarity distance
DOI：10.11916/j.issn.1005-9113.18110
Clc Number:TP277
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