A Dynamic Spatial-Temporal Subgraph Convolutional Network for Noncontact Fault Diagnosis

Voiceprint recognition based on deep learning (DL) is a promising method for intelligent fault diagnosis in rotating machinery, as it overcomes the limitations of vibration measurement by employing noncontact technique. However, the traditional voiceprint-based methods struggle to capture the spatia...

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Vydáno v:IEEE transactions on instrumentation and measurement Ročník 74; s. 1 - 11
Hlavní autoři: Cao, Yu, Chen, Yongyi, Zhang, Dan, Guo, Fanghong
Médium: Journal Article
Jazyk:angličtina
Vydáno: New York IEEE 2025
The Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Témata:
Accuracy
Artificial neural networks
Asynchronous motors
Bearing
Convolution
Correlation
dynamic edges
Fault diagnosis
Feature extraction
graph convolutional network (GCN)
Graph convolutional networks
Graph theory
Graphical representations
Heuristic algorithms
Nearest neighbor methods
noncontact fault diagnosis
Rotating machinery
spatial–temporal subgraph
Spectrogram
Vibration measurement
Vibrations
ISSN:0018-9456, 1557-9662
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Shrnutí:Voiceprint recognition based on deep learning (DL) is a promising method for intelligent fault diagnosis in rotating machinery, as it overcomes the limitations of vibration measurement by employing noncontact technique. However, the traditional voiceprint-based methods struggle to capture the spatial-temporal coupling relationships between voiceprint signals. Additionally, the existing voiceprint graph construction methods lack the ability to dynamically adjust the constructed graph, resulting in poor adaptability and performance. To overcome these shortcomings, a dynamic spatial-temporal subgraph convolutional network (DSTSGCN) is proposed for noncontact fault diagnosis. First, an edge-level dynamic graph convolutional network (ELDGCN) is designed to adaptively learn the spatial correlations between voiceprint signals by optimizing the weights of edges. Subsequently, a new temporal feature fusion module (TFFM) is developed to capture important long-term dependency information within signals to highlight intersignal temporal relationships. Finally, the discriminative representation of voiceprint fault features is enhanced by fusing multisignal spatial-temporal information to achieve graph-level fault diagnosis. The experimental results on the real three-phase asynchronous motor test platform show that the proposed DSTSGCN achieves an accuracy of 99.72% with one training sample.
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content type line 14
ISSN:0018-9456
1557-9662
DOI:10.1109/TIM.2024.3522422