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arXiv 2602.09699eess.SP
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滚动元件轴承故障检测与诊断:一维卷积神经网络

Rolling Element Bearing Fault Detection and Diagnosis with One-Dimensional Convolutional Neural Network

Faculty of Mechanical Engineering, University Teknologi Malaysia(马来西亚理工大学机械工程学院);Institute of Noise and Vibration, University Teknologi Malaysia(马来西亚理工大学噪声与振动研究所)

Barathan Pubalan, Muhammad Arif Aiman Jidin, Mohd Syahril Ramadhan Mohd Saufi, Mohd Salman Leong, Muhammad Danial bin Abu Hasan

AI总结:

本文提出了一种基于1D CNN的轴承故障检测方法,利用原始振动数据实现自动化诊断,通过实验验证了其在不同负载条件下的高准确率和良好的泛化能力。

摘要:

滚动元件轴承是旋转机械中的关键部件,其状态显著影响系统性能、可靠性和使用寿命。及时准确的故障检测对于防止意外故障和降低维护成本至关重要。传统诊断方法通常依赖于手动特征提取和浅层分类器,这可能无法捕捉原始振动信号中嵌入的复杂模式。在本研究中,开发了一个紧凑的一维卷积神经网络(1D CNN),用于利用原始时域振动数据自动进行轴承故障诊断,从而消除了手动特征工程的需要。该模型在两个已建立的基准数据集上进行训练和评估:凯斯西储大学(CWRU)数据集和帕德博恩大学(PU)数据集。CWRU数据根据四种不同的电机负载条件(0 HP到3 HP)进行分割,每个负载场景单独进行训练和测试,以确保严格分离并防止数据泄漏。CNN在0 HP、1 HP、2 HP和3 HP负载条件下分别实现了99.14%、98.85%、97.42%和95.14%的平均测试准确率。在PU数据集上,以自然诱发故障和更大的操作变化著称,模型实现了95.63%的稳健平均测试准确率。这些结果证实了模型在跨数据集和不同操作条件下的泛化能力。通过超参数调优,特别是窗口长度和训练周期,进一步提高了性能,突显了针对特定数据集和负载条件的定制配置的重要性。总体而言,所提出的方法展示了1D CNN在实时、数据驱动的轴承故障诊断中的有效性和可扩展性,为工业应用中的状态监测提供了可靠的理论基础。

英文摘要:

Rolling element bearings are critical components in rotating machinery, and their condition significantly influences system performance, reliability, and operational lifespan. Timely and accurate fault detection is essential to prevent unexpected failures and reduce maintenance costs. Traditional diagnostic methods often rely on manual feature extraction and shallow classifiers, which may be inadequate for capturing the complex patterns embedded in raw vibration signals. In this study, a compact one-dimensional convolutional neural network (1D CNN) is developed for automated bearing fault diagnosis using raw time-domain vibration data, eliminating the need for manual feature engineering. The model is trained and evaluated on two established benchmark datasets: the Case Western Reserve University (CWRU) dataset and the Paderborn University (PU) dataset. The CWRU data were segmented based on four distinct motor load conditions (0 HP to 3 HP), with each load scenario trained and tested independently to ensure strict separation and prevent data leakage. The CNN achieved high average test accuracies of 99.14%, 98.85%, 97.42%, and 95.14% for 0 HP, 1 HP, 2 HP, and 3 HP, respectively. On the PU dataset, known for its naturally induced faults and greater operational variability the model achieved a robust average testing accuracy of 95.63%. These results affirm the model ability to generalize across datasets and varying operating conditions. Further improvements were observed through hyperparameter tuning, particularly window length and training epochs, underscoring the importance of tailored configurations for specific datasets and load conditions. Overall, the proposed method demonstrates the effectiveness and scalability of 1D CNNs for real-time, data-driven bearing fault diagnosis, offering a reliable foundation for condition monitoring in industrial applications.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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