Research on Arc Length Control Technology of Double Closed-loop for Pulsed MIG Welding

4th International Conference on Applied Materials and Manufacturing Technology

材料科学;机械制造

Wang, L.B.^1 ; Yin, X.Y.^1 ; Yan, J.^1 ; Xiao, Y.X.^1 ; Lian, B.^2

Department of Civil Aviation Engineering, School of Aeronautics, Northwestern Polytechnical University, China^1

Dongguan Sanhang Civilmilitary Integration Innovation Institute, Dongguanm Guangdong, China^2

关键词: Arc length control;    Double closed loop;    Double closed-loop control;    Dynamic controls;    Pulsed MIG welding;    Stable state;    Two dimensional fuzzy controllers;    Variable parameters;   

Others  :  https://iopscience.iop.org/article/10.1088/1757-899X/423/1/012105/pdf
DOI  :  10.1088/1757-899X/423/1/012105

学科分类：材料科学（综合）

来源: IOP

【 摘 要 】

This paper presents a pulsed MIG welding arc length control method based on fuzzy control, which can better realize the dynamic control of arc and ensure arc length stability. In this system, a double-closed-loop control scheme is proposed, a variable-parameter PI control method is used, and a two-dimensional fuzzy controller of an arc-length loop is designed. Both the simulation and the experimental results show that when the distance between the welding gun and the workpiece changes, the arc length can reach a new balance and stable state after 9 pulse periods. The arc length control technology of double closed-loop for pulsed MIG welding is verified feasible in this paper.