Roller bearing operation reliability prediction based on Relevance Vector Machine and normalized wavelet decomposition information entropy

CHEN Fafa1,LIU Lili1,LIU Furong1,XIAO Wenrong1,CHEN Baojia1,YANG Yong2

Journal of Vibration and Shock ›› 2020, Vol. 39 ›› Issue (8) : 8-14.

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Journal of Vibration and Shock ›› 2020, Vol. 39 ›› Issue (8) : 8-14.

Roller bearing operation reliability prediction based on Relevance Vector Machine and normalized wavelet decomposition information entropy

  • CHEN Fafa1,LIU Lili1,LIU Furong1,XIAO Wenrong1,CHEN Baojia1,YANG Yong2
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Abstract

Aimed at traditional methods are difficult to achieve reliability evaluation and prediction for a single serving machine, an operation reliability evaluation and prediction method based on normalized wavelet information entropy and Relevance Vector Machine was proposed in this paper.This method mainly includes the establishment of an operational reliability index and the construction of a Relevance Vector Machine prediction model.Firstly, the vibration signals of roller bearings in the operation process were acquired in a test experiment.The features which reflected roller bearings running status were extracted from the vibration signals using wavelet packet decomposition.Then, the operation reliability index was established based on information entropy theory.Finally, a Relevance Vector Machine prediction model was constructed to predict the operation reliability index and its changing trend for the actual roller bearing.The experiment results show that the operation reliability evaluation and prediction method by using the normalized wavelet information entropy and Relevance Vector Machine, can effectively overcome the traditional calculation problem with probability statistics, and obtain the better operation reliability result for a single serving machine.

Key words

relevance vector machine / normalized information entropy / operation reliability / roller bearing

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CHEN Fafa1,LIU Lili1,LIU Furong1,XIAO Wenrong1,CHEN Baojia1,YANG Yong2. Roller bearing operation reliability prediction based on Relevance Vector Machine and normalized wavelet decomposition information entropy[J]. Journal of Vibration and Shock, 2020, 39(8): 8-14

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