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Acta Armamentarii ›› 2018, Vol. 39 ›› Issue (9): 1683-1691.doi: 10.3969/j.issn.1000-1093.2018.09.003

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Planetary Gearbox Fault Feature Extraction Based on Parameter Optimized Variational Mode Decomposition and Partial Mean ofMulti-scale Entropy

YANG Da-wei, ZHAO Yong-dong, FENG Fu-zhou, JIANG Peng-cheng, DING Chuang   

  1. (Department of Mechanical Engineering, Academy of Army Armored Force, Beijing 100072, China)
  • Received:2018-01-05 Revised:2018-01-05 Online:2018-10-25

Abstract: A fault feature extraction method based on parameter optimized variational mode decomposition(VMD)and partial mean of multi-scale entropy is proposed for the extraction of planetary gearbox fault features. The particle swarm optimization(PSO) is used to optimize VMD parameters to overcome the drawback of subjectively selecting the parameters, and the signal is processed by parameter-optimized VMD. The effective components are selected by mutual information to reconstruct signal. Multi-scale entropy can be used to analyze the complexity of signal under different scale factors, and partial mean can be used to reflect the mean value and variation trend of data. Based on multi-scale entropy, the partial mean of multi-scale entropy is used to measure the operating states of planetary gearbox, thus extracting the fault features. The processed results of planetary gearbox experimental data show that the proposed method can be more effective for planetary gearbox fault extraction.Key

Key words: planetarygearbox, faultfeatureextraction, variationalmodedecomposition, partialmeanofmulti-scaleentropy

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