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Intelligent control of arc stability and arc length in aluminum alloy pulsed GMAW

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Abstract

Pulsed gas metal arc welding (GMAW) can improve the heat input and heat distribution in the aluminum (Al) alloy welding process, thereby improving weld quality. However, the arc easily fluctuates during pulsed GMAW, which can seriously affect weld quality. This paper proposes an arc length control algorithm for Al alloy pulsed GMAW. An arc length control method based on proportional-integral-derivative (PID) control with instantaneous arc voltage as the feedback variable and wire feed speed (WFS) as the control variable is introduced. A support vector machine (SVM) model is established to predict the optimal reference arc voltage and a reference arc voltage prediction model is obtained by SVM fitting. Intelligent control of both arc stability and arc length can be realized.

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Data availability

The datasets used in the study are available on reasonable request from the corresponding author.

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Funding

This work was supported by the National Natural Science Foundation of China (grant no. 51205136), the Basic and Applied Basic Research Foundation of Guangdong Province (grant no. 2021A1515010678), the Competitive Allocation Project Special Fund of Guangdong Province Chinese Academy of Sciences Comprehensive Strategic Cooperation (grant no. 2013B091500082), the Fundamental Research Funds for the Central Universities (Key Program) (grant no. 2015ZZ084), the Science and Technology Planning Project of Guangzhou (grant no. 201604016015), and the China Scholarship Council (grant no. 201606155058).

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Authors and Affiliations

  1. School of Mechanical and Automotive Engineering, South China University of Technology, Guangzhou, 510640, China

    Kaiyuan Wu, Ziwei Chen, Hao Huang, Xiaobin Hong, Min Zeng & Zhao Liu

  2. Engineering Research Center for Special Welding Technology and Equipment of Guangdong Province, South China University of Technology, Guangzhou, 510640, China

    Kaiyuan Wu, Ziwei Chen, Hao Huang, Xiaobin Hong, Min Zeng & Zhao Liu

Authors
  1. Kaiyuan Wu
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  2. Ziwei Chen
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  3. Hao Huang
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  4. Xiaobin Hong
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  5. Min Zeng
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  6. Zhao Liu
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Contributions

Kaiyuan Wu contributed to the conception of the study and manuscript preparation, and performed the analysis; Ziwei Chen contributed to the experiments including the analysis; Hao Huang contributed to the analysis; Xiaobin Hong, Min Zeng, and Zhao Liu helped perform the analysis with constructive discussions.

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Correspondence to Kaiyuan Wu.

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Recommended for publication by Commission XII - Arc Welding Processes and Production Systems

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Wu, K., Chen, Z., Huang, H. et al. Intelligent control of arc stability and arc length in aluminum alloy pulsed GMAW. Weld World 66, 1357–1368 (2022). https://doi.org/10.1007/s40194-022-01291-8

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  • DOI: https://doi.org/10.1007/s40194-022-01291-8

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