Interpretable fault diagnosis of coal-mine conveyor-belt idler bearings using multi-source fusion diagrams and mobile residual soft threshold–MobileViT

IF 5.9 2区 工程技术 Q1 ENGINEERING, MULTIDISCIPLINARY
Wansheng Chen , Jiaxing Shen , Hu Zhu , Ping Xu
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引用次数: 0

Abstract

The fault diagnosis of conveyor belt idler bearings plays a crucial role in coal mine safety. In practical, inevitable challenges such as high-noise interference and small-sample conditions. Existing methods exhibit inadequate performance under the above conditions. This paper proposes a technique for fault diagnosis that integrates multisource fusion diagrams with a lightweight MRST-MobileViT model. To enhance fault feature representation, GADF, MDF, RP and CWT were employed to convert vibration signals into multi-source fusion diagram with richer fault information. A mobile residual soft thresholding module is incorporated into the MobileViT architecture to enhance the feature extraction capability. Verification through public datasets and self-constructed test data demonstrate that this method has a better diagnostic performance under high-noise and small-sample conditions. Furthermore, Grad-CAM heatmap analysis was performed to validate the interpretability of the model. This study provides an effective and reliable solution for the fault diagnosis of idler bearings in coal mines.
基于多源融合图和移动残差软阈值的煤矿输送带惰轮轴承可解释故障诊断
输送带托辊轴承的故障诊断对煤矿安全起着至关重要的作用。在实际应用中,不可避免的挑战如高噪声干扰和小样本条件。现有方法在上述条件下表现出不足的性能。提出了一种将多源融合图与轻量级MRST-MobileViT模型相结合的故障诊断技术。为了增强故障特征的表达,采用了GADF、MDF、RP和CWT等方法将振动信号转换成具有更丰富故障信息的多源融合图。在MobileViT体系结构中加入了移动残差软阈值处理模块,增强了特征提取能力。通过公共数据集和自建测试数据的验证,该方法在高噪声、小样本条件下具有较好的诊断性能。通过Grad-CAM热图分析,验证了模型的可解释性。该研究为煤矿惰轮轴承的故障诊断提供了有效可靠的解决方案。
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来源期刊
Ain Shams Engineering Journal
Ain Shams Engineering Journal Engineering-General Engineering
CiteScore
10.80
自引率
13.30%
发文量
441
审稿时长
49 weeks
期刊介绍: in Shams Engineering Journal is an international journal devoted to publication of peer reviewed original high-quality research papers and review papers in both traditional topics and those of emerging science and technology. Areas of both theoretical and fundamental interest as well as those concerning industrial applications, emerging instrumental techniques and those which have some practical application to an aspect of human endeavor, such as the preservation of the environment, health, waste disposal are welcome. The overall focus is on original and rigorous scientific research results which have generic significance. Ain Shams Engineering Journal focuses upon aspects of mechanical engineering, electrical engineering, civil engineering, chemical engineering, petroleum engineering, environmental engineering, architectural and urban planning engineering. Papers in which knowledge from other disciplines is integrated with engineering are especially welcome like nanotechnology, material sciences, and computational methods as well as applied basic sciences: engineering mathematics, physics and chemistry.
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