基于电弧信号的焊接过程最优参数的灰关联分析

Grey relational analysis of the most optimal parameters of welding process based on arc signals

电弧焊是一个复杂的物理化学过程,焊接过程中有大量的因素影响焊缝的质量,其中,电弧信号是影响焊缝质量尤其是焊缝强度的因素之一。在利用电弧信号确定焊缝强度方面已有大量的数学模型,但这些数学方法非常复杂,很难应用于焊接这样复杂的过程。在此采用灰关联分析来分析电弧信号,结论显示,电源的脉冲电压是影响焊缝质量最重要的因素,优化的参数也可以通过该方法确定。在多个过程参数中寻找对焊缝强度影响最大的因素方面,灰关联分析是一种非常好的工具,这种方法对现实工业生产起到很好的指导作用。

The complexity of the physics are involved in arc welding,several disturbances can appear during the welding processes, affecting the resulting quality of the welds.The arc signals is one of the disturbances which influence the weld quality especially the seam strength.Many researchers have developed a wide range of mathematical method for predicting the weld strength by arc signals, However,These mathematical method are so complex and no good use according to the complexity of welding.This paper addresses grey relational analysis to analyze the are signals.Results indicate the pulse voltage is the most important factor to the weld seam strength ,optimal parameters can be found and the experiment also proved the conclusion.It was found that grey relational analysis is a good tool to find the most important factor to the weld strength from the processing parameters ,which can instruct the actual production.