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Application of Coupled Hidden Markov Models in Bearing Fault Diagnosis
XIAO Wen-bin;CHEN Jin;ZHOU Yu
2011, 31 (6):
161-164.
DOI: 10.3969/j.issn.1006-1355-2011.06.036
Due to the abundant information contained in multichannel data, a multichannel fusion method based on coupled hidden Markov models (CHMMs) is presented for rolling- element-bearing’s fault diagnosis. A double-chain CHMM is adopted to combine the horizontal and vertical vibration signals from bearings. An experiment was carried out to validate the proposed method. The experimental results show that the proposed method can improve the diagnostic accuracy when compared with the conventional hidden Markov model (HMM) based method.
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