Dynamic spatial–temporal graph-driven machine remaining useful life prediction method using graph data augmentation

Chaoying Yang, Jie Liu (), Kaibo Zhou and Xinyu Li
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Chaoying Yang: Huazhong University of Science and Technology
Jie Liu: Huazhong University of Science and Technology
Kaibo Zhou: Huazhong University of Science and Technology
Xinyu Li: Huazhong University of Science and Technology

Journal of Intelligent Manufacturing, 2024, vol. 35, issue 1, No 21, 355-366

Abstract: Abstract It is beneficial to maintain the normal operation of machines by conducting remaining useful life (RUL) prediction. Recently, graph data-driven machine RUL prediction methods have made a great success, since graph can model spatial and temporal dependencies of signals. However, the constructed graphs still have some limitations: (1) In the practical industrial production, the installation of multi-sensor networks is expensive and hard to achieve, so the single sensor is commonly used for data monitoring. However, most of these methods constructed graphs by establishing relationships between the different sensors, which are completely unsuitable for prediction tasks in single-sensor scenarios. (2) The quality of constructed graph is low, where the graph structure is fixed, failing in representing the machine degradation process. To overcome these limitations, a dynamic spatial–temporal (ST) graph-driven machine RUL prediction method using graph data augmentation (GDA) is proposed. The ST graph is constructed using short-time Fourier transform, capturing the frequency-domain and time-domain information hidden in the signals. Then, a GDA framework is designed to generate dynamic ST graphs, enlarging the structural differences of subgraphs. Subsequently, a GDA-based graph deep learning prediction model is constructed for dynamic ST graph-based RUL prediction, where an autoencoder-based graph embedding module is designed to replace simple Readout. Verification experiments are conducted on two case studies, and the results show that the proposed prediction method achieves a competitive performance.

Keywords: Dynamic spatial–temporal graph; Autoencoder; Remaining useful life prediction; Graph data augmentation; Graph deep learning (search for similar items in EconPapers)
Date: 2024
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DOI: 10.1007/s10845-022-02052-6

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