基于多通道融合的齿轮箱故障诊断方法

doi:10.13229/j.cnki.jdxbgxb.20241377

Abstract

Abstract:

To address the limitations of single-channel vibration signals in comprehensively characterizing gearbox fault features， this paper proposes a data-level fusion method called MFTDCN is proposed.This method effectively integrates information from multiple channels to obtain richer features compared to single vibration signals.The approach begins by applying Principal Component Analysis （PCA） to multi-channel vibration signals to reduce them into three components. These components are then transformed into three time-frequency images using Short-Time Fourier Transform （STFT）. An improved cosine similarity measure， based on Hoyer sparsity， is employed to calculate weights by combining sparsity and similarity metrics. These weights are used to perform weighted fusion of the three time-frequency images， resulting in a single RGB image， which is then used as input for the diagnostic model. The diagnostic model combines Deformable Convolution Networks （DCN） with Transformer architectures to extract features and classify faults. Experimental results on the gearbox data set of Southeast University and the data set jointly published by Beijing University of Technology and Beijing Jiaotong University confirm the effectiveness and reliability of the proposed method.

Key words: fault diagnosis, data-level fusion, short-time Fourier transform, cosine similarity, deformable convolution network, Transformer

CLC Number:

TH17

Zhi-gang FENG,Ying WANG,Yu WANG. Gear box fault diagnosis method based on multi-channel fusion[J].Journal of Jilin University(Engineering and Technology Edition), 2026, 56(7): 1811-1824.

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轴承/齿轮箱	类型	训练集	测试集	标签
轴承数据	滚动体故障	210	90	0
	内圈故障	210	90	1
	外圈故障	210	90	2
	复合故障	210	90	3
	健康状态	210	90	4
齿轮数据	齿轮断齿	210	90	0
	齿轮缺口	210	90	1
	齿面磨损	210	90	2
	齿根裂纹	210	90	3
	健康状态	210	90	4

工况	Gray	GAF	MTF	STFT
均值	86.87	93.11	80.06	99.46
bearingset_20_0	82.16	96.16	74.24	100.00
bearingset_30_2	84.22	93.76	84.22	99.92
gearset_20_0	86.18	88.71	82.11	98.27
gearset_30_2	94.91	93.80	79.67	99.65

类型	工况 bearingset_30_2					工况gearset_30_2
类型	滚动体	内圈	外圈	复合	正常	缺口	断牙	裂纹	磨损	正常
分量1
分量2
分量3
RGB

工况	信息熵	方差权重	未改进的余弦相似度	能量权重	Hoyer稀疏度改进的余弦相似度
均值	97.88	98.09	98.90	98.22	99.46
bearingset_20_0	99.42	99.83	99.87	99.38	100.00
bearingset_30_2	99.17	99.63	100.00	99.55	99.92
gearset_20_0	94.02	93.94	96.24	95.08	98.28
gearset_30_2	98.89	98.94	99.48	98.86	99.65

工况	RGB-ResNet	Gray-LeNet-5	Raw-TICNN	Matrix-CNN	CAM_MCFCNN	MFTDCN
均值	97.00	93.81	99.12	97.62	96.89	99.46
bearingset_20_0	99.84	95.12	99.84	99.55	95.11	100.00
bearingset_30_2	99.55	99.28	97.60	99.94	94.89	99.92
gearset_20_0	92.27	89.33	99.05	95.76	98.67	98.27
gearset_30_2	96.32	91.52	99.97	95.23	98.88	99.65

Gear box fault diagnosis method based on multi-channel fusion

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