基于迁移学习与深度残差网络的滚动轴承快速故障诊断算法

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摘要针对现有基于深度学习的滚动轴承故障诊断算法训练参数量大，训练时间长且需要大量训练样本的缺点，提出了一种基于迁移学习（Transfer Learning，TL）与深度残差网络（Deep Residual Network，ResNet）的快速故障诊断算法（TL-ResNet）。首先开发了一种将短时傅里叶变换（STFT）与伪彩色处理相结合的振动信号转三通道图像数据的方法；然后将在ImageNet数据集上训练的ResNet18模型作为预训练模型，通过迁移学习的方法，应用到滚动轴承故障诊断领域当中；最后对滚动轴承在不同工况下的故障诊断问题，提出了采用小样本迁移的方法进行诊断。在凯斯西储大学（CWRU）与帕德博恩大学（PU）数据集上进行了实验，TL-ResNet的诊断准确率分别为99.8%与95.2%，且在CWRU数据集上TL-ResNet的训练时间仅要1.5s，这表明本算法优于其他的基于深度学习的故障诊断算法与经典算法，可用于实际工业环境中的快速故障诊断。

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	刘飞1
	陈仁文1
	邢凯玲2
	丁汕汕1
	张迈一1

关键词 ：迁移学习, 深度学习, STFT, ResNet, 滚动轴承故障诊断

Abstract：Aiming at the shortcomings of the existing deep learning-based rolling bearing fault diagnosis algorithms that the training parameters are large, the training time is long, and a large number of training samples are required, a fast fault diagnosis algorithm (TL-ResNet) based on Transfer Learning (TL) and Deep Residual Network (ResNet) is proposed. First developed a method of converting vibration signals into three-channel image data by combining short-time Fourier transform (STFT) with pseudo-color processing; then the ResNet18 model trained on the ImageNet dataset is used as a pre-training model, and applied to the field of rolling bearing fault diagnosis through the method of transfer learning; finally, the method of small sample transfer is proposed for the fault diagnosis of rolling bearing under different working conditions. Experiments were performed on the Case Western Reserve University（CWRU）and Universität Paderborn（PU） datasets. The diagnosis accuracy of TL-ResNet is 99.8% and 95.2%, respectively, and the training time of TL-ResNet on the CWRU dataset is only 1.5s, which shows that this algorithm is superior to other deep learning-based fault diagnosis algorithms and classic algorithms, it can be used for rapid fault diagnosis in actual industrial environments.

Key words： Transfer learning Deep learning short-time Fourier transform (STFT) deep residual network (ResNet) Rolling bearing fault diagnosis

收稿日期: 2020-10-20 出版日期: 2022-02-15

引用本文:

刘飞1，陈仁文1，邢凯玲2，丁汕汕1，张迈一1. 基于迁移学习与深度残差网络的滚动轴承快速故障诊断算法[J]. 振动与冲击, 2022, 41(3): 154-164.
LIU Fei1, CHEN Renwen1, XING Kailing2, DING Shanshan1, ZHANG Maiyi1. Fast fault diagnosis algorithm for rolling bearing based on transfer learning and deep residual network. JOURNAL OF VIBRATION AND SHOCK, 2022, 41(3): 154-164.

链接本文:

http://jvs.sjtu.edu.cn/CN/ 或 http://jvs.sjtu.edu.cn/CN/Y2022/V41/I3/154

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