ZHANG Xiaoning, ZHU Huilong, XIN Liang, et al. Bearing fault diagnosis method based on dual-channel feature fusion[J]. Electric drive for locomotives,2023(6): 39-48.
ZHANG Xiaoning, ZHU Huilong, XIN Liang, et al. Bearing fault diagnosis method based on dual-channel feature fusion[J]. Electric drive for locomotives,2023(6): 39-48. DOI: 10.13890/j.issn.1000-128X.2023.06.005.
Bearing fault diagnosis method based on dual-channel feature fusion
Intelligent diagnosis method based on convolution neural network (CNN) has been widely used in bearing fault diagnosis. However
most existing diagnostic models rely on single-source information inputs
limiting their accuracy and reliability. To solve this limitation
this paper presents a rolling bearing fault diagnosis method based on dual-channel feature fusion. Firstly
the time-frequency analysis diagrams of rolling bearing vibration signals were constructed by using multiple Q-factor continuous Gabor wavelet transform (CMQGWT) and fast spectral coherence (Fast-SC)
respectively. Subsequently
a CNN model with dual input channels was constructed
allowing for the fusion of deep time-frequency features extracted from each channel into a new feature at a feature fusion layer. Finally
the diagnosis results were output using a classifier. Through classification and recognition experiments involving single and compound faults in rolling bearings for high-speed trains
compared with the CNN model with a single input channel
the proposed model demonstrates superior diagnostic accuracy and robustness.
关键词
滚动轴承卷积神经网络特征融合故障诊断高速列车
Keywords
rolling bearingconvolution neural networkfeature fusionfault diagnosishigh-speed train
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