Abstract
In view of weak defect signals and large acoustic emission (AE) data in low speed bearing condition monitoring, we propose a bearing fault diagnosis technique based on a combination of empirical mode decomposition (EMD), clear iterative interval threshold (CIIT) and the kernel-based fuzzy c-means (KFCM) eigenvalue extraction. In this technique, we use EMD-CIIT and EMD to complete the noise removal and to extract the intrinsic mode functions (IMFs). Then we select the first three IMFs and calculate their histogram entropies as the main fault features. These features are used for bearing fault classification using KFCM technique. The result shows that the combined EMD-CIIT and KFCM algorithm can accurately identify various bearing faults based on AE signals acquired from a low speed bearing test rig.
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Foundation item: the Privileged Shandong Provincial Government’s “Taishan Scholar” Program
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Zhang, K., Lin, T. & Jin, X. Low Speed Bearing Fault Diagnosis Based on EMD-CIIT Histogram Entropy and KFCM Clustering. J. Shanghai Jiaotong Univ. (Sci.) 24, 616–621 (2019). https://doi.org/10.1007/s12204-019-2108-0
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DOI: https://doi.org/10.1007/s12204-019-2108-0
Keywords
- empirical mode decomposition - clear iterative interval threshold (EMD-CIIT)
- kernel-based fuzzy c-means (KFCM)
- acoustic emission (AE) signals
- low speed machine
- roller element bearing