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Sparse graph structure fusion convolutional network for machinery remaining useful life prediction

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  • Cui, Lingli
  • Shen, Qiang
  • Xiao, Yongchang
  • Liu, Dongdong
  • Wang, Huaqing

Abstract

Effective prediction of machinery remaining useful life (RUL) is prominent to achieve intelligent preventive maintenance in manufacturing systems. In this paper, a sparse graph structure fusion convolutional network (SGSFCN) is proposed for more accurate end-to-end RUL prediction of machine. A novel node-level graph structure called time series shapelet distance graph (TSSDG) is designed to convert the time series to node feature. The SGSFCN model is proposed to learn degradation information from the graph structure. In SGSFCN, a sparse graph structure (SGS) layer and a fusion graph structure (FGS) layer preceding the graph convolutional network (GCN) are designed to learn the SGS from node representation and fuse the original graph structure, enabling the graph structure and node update iteratively in subsequent layers. Concurrently, a bidirectional long short-term memory network (BiLSTM) layer is integrated to capture the global temporal dependencies. The method is validated by two test rig data, and results demonstrate that the proposed method offers significantly higher prediction accuracy of RUL compared to several state-of-art methods.

Suggested Citation

  • Cui, Lingli & Shen, Qiang & Xiao, Yongchang & Liu, Dongdong & Wang, Huaqing, 2025. "Sparse graph structure fusion convolutional network for machinery remaining useful life prediction," Reliability Engineering and System Safety, Elsevier, vol. 254(PA).
    • Handle: RePEc:eee:reensy:v:254:y:2025:i:pa:s095183202400663x
    DOI: 10.1016/j.ress.2024.110592
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    References listed on IDEAS

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