Integrated HMM based bearing fault diagnosis

JIANG Hui-ming;CHEN Jin;DONG Guang-ming;LIU Tao

Journal of Vibration and Shock ›› 2014, Vol. 33 ›› Issue (10) : 92-96.

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PDF(2064 KB)
Journal of Vibration and Shock ›› 2014, Vol. 33 ›› Issue (10) : 92-96.
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Integrated HMM based bearing fault diagnosis

  • JIANG Hui-ming,CHEN Jin,DONG Guang-ming,LIU Tao
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Abstract

Features in time and frequency domain were extracted first. A compensation method based on distance was used to choose features sensitive to bearing fault. Then full features and sensitive features vectors were built. The results of Hidden Markov Model based on those two features were different. Then the method of integrated HMM for bearing fault diagnosis was proposed. Based on independent HMM classifiers trained by those two different features, average rules and the maximum likelihood probability method were used to combine the HMM classifiers. The experimental results show that this method has a higher recognition rate compared with the other two independent classifiers based on different feature vectors.


Key words

bearing fault diagnosis / an evaluation technique based on compensation distance / Hidden Markov Model

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JIANG Hui-ming;CHEN Jin;DONG Guang-ming;LIU Tao. Integrated HMM based bearing fault diagnosis[J]. Journal of Vibration and Shock, 2014, 33(10): 92-96
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