A new fault diagnosis technique for rolling element bearing using multi-scale Lempel-Ziv complexity
(LZC) and Mahalanobis distance (MD) criterion is proposed in this study. A multi-scale coarse-graining process
is used to extract fault features for various bearing fault conditions to overcome the limitation of the single stage
coarse-graining process in the LZC algorithm. This is followed by the application of MD criterion to calculate
the accuracy rate of LZC at different scales, and the best scale corresponding to the maximum accuracy rate
is identified for fault pattern recognition. A comparison analysis with Euclidean distance (ED) criterion is also
presented to verify the superiority of the proposed method. The result confirms that the fault diagnosis technique
using a multi-scale LZC and MD criterion is more effective in distinguishing various fault conditions of rolling
element bearings.
YU Kun (俞昆), TAN Jiwen (谭继文), LIN Tianran (林天然)
. Fault Diagnosis of Rolling Element Bearing Using Multi-Scale Lempel-Ziv Complexity and Mahalanobis Distance Criterion[J]. Journal of Shanghai Jiaotong University(Science), 2018
, 23(5)
: 696
-701
.
DOI: 10.1007/s12204-018-1965-2
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