YANG Rongkun,JIANG Hong,ZHANG Xiangfeng. Study on fault diagnosis method for planetary gearboxes based on optimized VMD and ELM[J]. Journal of Mechanical Transmission,2026,50(3):172-178.
YANG Rongkun,JIANG Hong,ZHANG Xiangfeng. Study on fault diagnosis method for planetary gearboxes based on optimized VMD and ELM[J]. Journal of Mechanical Transmission,2026,50(3):172-178.DOI: 10.16578/j.issn.1004.2539.2026.03.019.
Study on fault diagnosis method for planetary gearboxes based on optimized VMD and ELM
the BWO algorithm was employed to optimize the decomposition layers
K
and penalty factor
α
of VMD using the minimum envelope entropy as the objective function to achieve adaptive signal decomposition. Secondly
the MPE algorithm was used to compute the non-linear features of the intrinsic mode function (IMF) components
and a feat
ure vector consisting of five time-domain indexes was constructed. Finally
the vectors were fed into the ELM for training and diagnosis. Comparative tests were conducted on a planetary gearbox test bench under four working conditions.
Results
2
The testing results show that the overall accuracy of the proposed method reaches 97.92%
which is significantly higher than that of EMD-ELM and optimized VMD-SVM models. The findings verify that the BWO-VMD effectively improves signal de-noising and adaptive decomposition. This research provides a reliable basis for the health monitoring and precision design of planetary gearboxes.
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