IMF Identification of Rolling Bearings Fault Vibration for Coal Preparation Crusher Under Impact

ZHANG Hai-sheng

Hydraulics Pneumatics & Seals ›› 2025, Vol. 45 ›› Issue (6) : 70-78.

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Hydraulics Pneumatics & Seals ›› 2025, Vol. 45 ›› Issue (6) : 70-78. DOI: 10.3969/j.issn.1008-0813.2025.06.009
Design & Research

IMF Identification of Rolling Bearings Fault Vibration for Coal Preparation Crusher Under Impact

  • ZHANG Hai-sheng
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Abstract

The vibration signal of hydraulic rolling bearing of coal preparation crusher is affected by environmental noise, which presents periodic impact and nonlinear energy characteristics, which makes the fault identification result inaccurate. Therefore, an IMF method for fault vibration identification of hydraulic rolling bearing of coal preparation crusher based on periodic impact is proposed. Through Empirical Mode Decomposition (EMD) technology, the vibration signal collected by the three-axis acceleration sensor is decomposed into the Intrinsic Mode Function (IMF), and the abnormal energy moment features in the IMF are extracted. The cuckoo optimization algorithm is used to improve the clustering effect of the peak density clustering algorithm, and the local density value of the IMF energy moment characteristic is calculated to recognize the fault vibration of the hydraulic rolling bearing of the coal separation crusher. The experimental results show that the proposed method can effectively identify the fault vibration of hydraulic rolling bearings under different fault conditions, and the identification results are consistent with the actual situation, indicating that the method has a good recognition accuracy.

Key words

hydraulic rolling bearings / IMF algorithm / coal selection crusher / fault identification / abnormal energy moment / peak density clustering

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ZHANG Hai-sheng. IMF Identification of Rolling Bearings Fault Vibration for Coal Preparation Crusher Under Impact[J]. Hydraulics Pneumatics & Seals, 2025, 45(6): 70-78 https://doi.org/10.3969/j.issn.1008-0813.2025.06.009

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