Mixed logical dynamical model for back bead width prediction of pulsed GTAW process with misalignment

Mixed logical dynamical model for back bead width prediction of pulsed GTAW process with misalignment
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用于预测未对准的脉冲 GTAW 工艺后焊道宽度的混合逻辑动态模型

DOI:
10.1016/j.jmatprotec.2010.07.022
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发表时间:
2010-11
影响因子:
6.3
通讯作者:
Chen, Shanben
Chen, Shanben
中科院分区:
材料科学1区
文献类型:
--
作者:
Ma, Hongbo;Wei, Shanchun;Lin, Tao;Chen, Shanben

文献摘要

参考文献

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本文的目的是提出一种混合逻辑动力学(MLD)模型来预测脉冲GTAW过程中不对准的后头宽度。将不对准作为离散输入,采用分段线性模型对非线性焊接过程进行近似。在此基础上,建立了MLD模型,并对脉冲GTAW过程的背峰宽度进行了较好的预测。通过闭环控制实验验证了MLD模型的稳定性和可靠性。研究表明,MLD框架是一种很好的脉冲GTAW过程建模方法。从而为基于MLD模型的焊接过程熔透控制奠定了坚实的基础。
The purpose of this paper is to propose a kind of mixed logical dynamical (MLD) model to predict the back bead width of pulsed GTAW process with misalignment. Misalignment is considered as discrete input and the nonlinear welding process is approximated using piecewise linear models. A MLD model is then established and gives a good prediction quality of the back bead width of pulsed GTAW process with misalignment. The stability and reliability of the MLD model are tested by a closed loop control experiment. This study shows that the MLD framework is a good modeling method for pulsed GTAW process. Thus, a solid foundation for penetration control of welding process is established based on the MLD model.
DOI: 10.1115/1.2802392
发表时间: 1997-12
影响因子: 1.7
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