Control of 3D weld pool surface

被引：103

作者：

Liu, YuKang

Zhang, YuMing ^{[1
]}

机构：

[1] Univ Kentucky, Inst Sustainable Mfg, Lexington, KY 40506 USA

来源：

CONTROL ENGINEERING PRACTICE | 2013年 / 21卷 / 11期

基金：

美国国家科学基金会;

关键词：

Predictive control; Weld pool geometry; Machine vision; 3D; GTAW; MODEL-PREDICTIVE CONTROL; FUZZY CONTROL; PULSED GTAW; GEOMETRY; SYSTEM; ROBOT;

D O I：

10.1016/j.conengprac.2013.06.019

中图分类号：

TP [自动化技术、计算机技术];

学科分类号：

0812 ;

摘要：

The 3D weld pool surface in gas tungsten arc welding (GTAW) is characterized by its width, length, convexity and measured in real-time using an innovative machine vision system. The dynamic response of these characteristic parameters to welding current and speed as control variables is modeled. Based on the identified dynamic model, a predictive control algorithm is developed to control these characteristic parameters. The proposed algorithm is given in a closed form and no online optimization is required. Welding experiments confirm that the developed control system is effective in achieving the desired 3D weld pool surface geometry despite various disturbances. (C) 2013 Elsevier Ltd. All rights reserved.

引用

页码：1469 / 1480

页数：12

共 29 条

[1] Synchronous weld pool oscillation for monitoring and control [J].