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首页> 外文期刊>Journal of Intelligent Manufacturing >Control of weld penetration depth using relative fluctuation coefficient as feedback
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Control of weld penetration depth using relative fluctuation coefficient as feedback

机译：使用相对波动系数作为反馈控制焊接穿透深度

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摘要

The monitoring and control of weld penetration in pulsed gas metal arc welding (GMAW-P) is considerably challenging, especially in field applications. The metal transfer and pulse current in GMAW-P complicate the identification of weld penetration. In previous studies, the authors found that both the change in arc voltage during the peak current period and the average arc voltage during the peak current period can be used for condition monitoring of weld pool surface and thus for the estimation of GMAW-P penetration depth. In the present work, the relative fluctuation coefficient (C-RF) of weld pool surface is proposed by combining these two signals to predict the weld penetration depth. Model predictive control using this coefficient as feedback is employed to control the penetration depth. The experimental results show that uniform weld penetration depth can be obtained by the adaptive control algorithm. The practice attempted in this work can be expected to be a candidate solution for GMAW-P penetration control, which is easy to implement in field applications.
机译：脉冲气体金属弧焊（GMAW-P）中的焊接渗透的监测和控制显着具有挑战性，特别是在现场应用中。 GMAW-P中的金属转移和脉冲电流使焊接渗透的识别复杂化。在先前的研究中，作者发现，峰值电流期间的电弧电压的变化和峰值电流期间的平均电弧电压都可用于焊接池表面的条件监测，从而估计GMAW-P渗透深度。在本作工作中，通过组合这两个信号来预测焊接渗透深度来提出焊接池表面的相对波动系数（C-RF）。使用该系数作为反馈的模型预测控制被用来控制穿透深度。实验结果表明，通过自适应控制算法可以获得均匀的焊接渗透深度。在这项工作中尝试的实践可以预期是GMAW-P渗透控制的候选解决方案，这易于在现场应用中实现。

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