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Application of SaRT–SVM algorithm for leakage pattern recognition of hydraulic check valve

  • Mathematical methods in data science
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Abstract

Check valves are key components in hydraulic systems. The cross-port leakage in check valves is a common fault that affects their performances. The vibration and pressure fluctuations excited by leaks are weak, therefore leakage is difficult to be identified and classified by intelligent algorithms and non-destructive testing methods. To maximize the performance of leak pattern recognition, we had improved the sequential minimal optimisation algorithm for enhancing the classification performance and tested it with the University of California Irvine Machine Learning Repository. Furthermore, combining with the search and rescue team (SaRT) algorithm, we propose SaRT-SVM algorithm. Two important parameters γ and C of support vector machine (SVM) were optimised and compared with response surface and other algorithms. We analysed the SaRT–SVM method for leakage pattern recognition and validated the robustness of the developed method by applying the method on multiple fault samples of each fault mode, additional different noises, and another independent data collection. The results showed that the SaRT–SVM algorithm exhibited excellent classification performance and robustness when applied to the leakage pattern recognition of hydraulic check valves under the influence of different noises.

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Data availability

The data that support the findings of this study are available from the corresponding author, Chengbiao Tong cbtong@hunau.edu.cn, upon reasonable request.

Abbreviations

VA:

Variance

KU:

Kurtosis

SK:

Skewness

RMS:

Root mean square

WF:

Wave form factor

PF:

Peaking factor

IF:

Impulse factor

MF:

Margin factor

GF:

Gravity center frequency

FV:

Frequency variance

MSF:

Mean square frequency

E1–E8 :

Energy ratio

WE:

Energy entropy

EV:

Energy variance

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Funding

This work was financially supported by Natural Science Foundation of Hunan Province (2020JJ4045); Hunan Province Key R&D Program (2022NK2028); Hunan Agricultural Machinery Equipment R&D Project (X202147); China Scholarship Council.

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Authors and Affiliations

Authors

Contributions

Conceptualization: [Nariman Sepehri]; Methodology: [Chengbiao Tong]; Formal analysis and investigation: [Chengbiao tong]; Writing—original draft preparation: [Chengbiao Tong, Nariman Sepehri]; Writing—review and editing: [Chengbiao Tong, Nariman Sepehri]; Funding acquisition: [Chengbiao Tong, Nariman Sepehri], Resources: [Nariman Sepehri, Chengbiao Tong]; Supervision: [Nariman Sepehri].

Corresponding author

Correspondence to Nariman Sepehri.

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The authors declared no potential conflicts of interest with respect to the research, authorship, and/or publication of this article.

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Tong, C., Sepehri, N. Application of SaRT–SVM algorithm for leakage pattern recognition of hydraulic check valve. Soft Comput 29, 37–51 (2025). https://doi.org/10.1007/s00500-024-10371-4

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  • DOI: https://doi.org/10.1007/s00500-024-10371-4

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