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Appending-inspired multivariate time series association fusion for tool condition monitoring

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Abstract

In intelligent machining, tool condition monitoring (TCM) is crucial to improving tool efficiency and machining accuracy, which requires the real-time analysis and feature extraction of multivariate time series signals collected by multiple sensors. However, multivariate time series are ultra-high-dimensional and difficult to perform representation learning directly, requiring sampling and typical feature extraction. The existing deep feature extractors based on Sequential sampling, Random sampling, or Window sampling, are poor at capturing the critical information from the huge amount of time series data, and ignore the temporal associations, so the actual results are not satisfactory in terms of prediction accuracy and efficiency. Therefore, we propose an appending-inspired multivariate time series association fusion method for TCM tasks: after the necessary denoising, we capture typical time-domain, frequency-domain, and time-frequency-domain features of multivariate time series based on the proposed appending-inspired feature capturer to fully consider the temporal associations, and employ the ACNNs (Attention-based Convolutional Neural Networks) to extract and fuse the multivariate time series features for real-time TCM tasks. The experimental results on NASA and PHM2010 datasets show that our method can real-time and effectively monitor the tool condition and accurately predict the tool wear state.

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Data availability

The data that support the findings of this study are openly available, and we have posted the links in the footnotes of Sect. 4.1.

Notes

  1. https://www.nasa.gov/content/prognostics-center-of-excellence-data-set-repository.

  2. https://www.phmsociety.org/competition/phm/10.

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Funding

This work was supported by the Chunhui Project Foundation of the Education Department of China (HZKY20220291), and Natural Science Foundation of Heilongjiang Province (LH2022F034).

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Contributions

LX: conceptualization, methodology, investigation, resources, supervision, visualization, project administration, funding acquisition, writing—review & editing. WW: conceptualization, methodology, validation, investigation, software, data curation, writing—original draft. JC: software, methodology, validation, formal analysis, writing—review & editing. XW: software, resources, supervision, project administration.

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Correspondence to Liang **.

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The authors declare that they have no known competing financial interests or personal relationships that could have appeared to influence the work reported in this paper.

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**, L., Wang, W., Chen, J. et al. Appending-inspired multivariate time series association fusion for tool condition monitoring. J Intell Manuf (2023). https://doi.org/10.1007/s10845-023-02202-4

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  • DOI: https://doi.org/10.1007/s10845-023-02202-4

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