Fault diagnosis method based on multi-scale adaptive super-graph convolutional neural networks

IF 3.4 2区 物理与天体物理 Q1 ACOUSTICS
Jinhua Wang , Wenbao Cao , Jie Cao , Li Chen , Yanhong Ma
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引用次数: 0

Abstract

In the research on fault diagnosis using deep learning, there is a lack of effective cross-scale feature association modeling, which overlooks the potential correlations between signals at different scales, resulting in weak generalization capabilities. This paper proposes a multi-scale feature construction space Supergraph integrated with physical prior knowledge, and based on this method, introduces a Multi-Scale Adaptive Supergraph Convolutional Neural Network (MS-ASGCN). The vibration signals are decomposed into different frequency bands, and features at various scales are extracted while incorporating prior knowledge. Local topological graphs are constructed using various weighted metrics, and these local graphs together form a spatial Supergraph, which serves as the input for the model. A dual-channel Graph Convolutional Network (GCN) is employed to extract features, and an attention mechanism is introduced to adaptively assign weights to different channels, achieving deep feature fusion. Experiments on two benchmark datasets demonstrate that MS-ASGCN effectively improves model accuracy and exhibits good stability and generalization capabilities.
基于多尺度自适应超图卷积神经网络的故障诊断方法
在基于深度学习的故障诊断研究中,缺乏有效的跨尺度特征关联建模,忽略了不同尺度信号之间潜在的相关性,导致泛化能力较弱。提出了一种融合物理先验知识的多尺度特征构建空间超图,并在此基础上引入了一种多尺度自适应超图卷积神经网络(MS-ASGCN)。将振动信号分解成不同的频带,在结合先验知识的同时提取不同尺度的特征。局部拓扑图使用不同的加权度量来构建,这些局部图共同形成一个空间超图,作为模型的输入。采用双通道图卷积网络(GCN)提取特征,引入注意机制自适应分配不同通道的权重,实现深度特征融合。在两个基准数据集上的实验表明,MS-ASGCN有效地提高了模型精度,并表现出良好的稳定性和泛化能力。
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来源期刊
Applied Acoustics
Applied Acoustics 物理-声学
CiteScore
7.40
自引率
11.80%
发文量
618
审稿时长
7.5 months
期刊介绍: Since its launch in 1968, Applied Acoustics has been publishing high quality research papers providing state-of-the-art coverage of research findings for engineers and scientists involved in applications of acoustics in the widest sense. Applied Acoustics looks not only at recent developments in the understanding of acoustics but also at ways of exploiting that understanding. The Journal aims to encourage the exchange of practical experience through publication and in so doing creates a fund of technological information that can be used for solving related problems. The presentation of information in graphical or tabular form is especially encouraged. If a report of a mathematical development is a necessary part of a paper it is important to ensure that it is there only as an integral part of a practical solution to a problem and is supported by data. Applied Acoustics encourages the exchange of practical experience in the following ways: • Complete Papers • Short Technical Notes • Review Articles; and thereby provides a wealth of technological information that can be used to solve related problems. Manuscripts that address all fields of applications of acoustics ranging from medicine and NDT to the environment and buildings are welcome.
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