脉冲GTAW焊缝成形智能控制方法

在作者前期工作的基础上,进一步展示了模糊神经网络与专家系统等智能化方法在电弧焊动态过程与焊缝成形控制中的应用结果.在模糊推理与神经网络结合的单人单出焊接电流控制器FNNC设计的基础上,设计了专家系统控制器用于调节焊接速度,完成了焊接熔池动态过程双人双出智能控制器的设计,实现了脉冲GTAW正反面熔宽与焊缝成形的同时智能控制.与前期工作一并构成了对电弧焊接熔池动态过程和焊接质量智能控制途径的成功探索.

Intelligent Control of Weld Seam Molding in Pulsed GTAW

As an extension of our former work, this paper further shows the results of the intelligent methodologies, such as fuzzy-neural network and expert system techniques as applied to control of dynamic process of the weld pool and seam molding in pulsed gas tungsten arc welding. Based on the SISO fuzzy-neural network controller--FNNC for regulating welding current in our former work, the expert system controller for regulating welding travel velocity has been designed in this paper, which establishs a DIDO intelligent controller for welding pool dynamic process and realizes simultaneously manipulating the top and back weld widths and molding. Combined with our former work, this paper has shown a successful investigation on intelligent control of arc welding pool dynamic process and weld quality.