预测式喷射电弧焊接（GMAW）工艺中液滴尺寸和频率的估算与控制。

Estimation and control of droplet size and frequency in projected spray mode of a gas metal arc welding (GMAW) process.

机构信息

Department of Electrical Engineering, Science and Research Branch, Islamic Azad University, Tehran, Iran.

出版信息

ISA Trans. 2011 Jul;50(3):409-18. doi: 10.1016/j.isatra.2011.02.004. Epub 2011 Mar 27.

DOI:10.1016/j.isatra.2011.02.004

Abstract

New estimators are designed based on the modified force balance model to estimate the detaching droplet size, detached droplet size, and mean value of droplet detachment frequency in a gas metal arc welding process. The proper droplet size for the process to be in the projected spray transfer mode is determined based on the modified force balance model and the designed estimators. Finally, the droplet size and the melting rate are controlled using two proportional-integral (PI) controllers to achieve high weld quality by retaining the transfer mode and generating appropriate signals as inputs of the weld geometry control loop.

摘要

基于改进的力平衡模型设计了新的估算器，以估算气体金属电弧焊过程中分离液滴的大小、分离液滴的大小以及液滴分离频率的平均值。根据改进的力平衡模型和设计的估算器，确定了使过程处于喷射过渡模式的适当液滴尺寸。最后，使用两个比例积分（PI）控制器控制液滴尺寸和熔化速率，以通过保留传输模式并生成适当的信号作为焊缝几何形状控制回路的输入来实现高质量的焊缝。