Modeling and control of quasi-keyhole arc welding process

Research output: Contribution to journalArticlepeer-review

64 Scopus citations

Abstract

Quasi-keyhole is a novel approach proposed to operate the keyhole arc welding process. Because the method's effectiveness depends on the amperage of the peak current used to establish the keyhole, this paper proposes adjusting the amperage based on the duration of the peak current, which equals the keyhole establishment time. A nominal model structure has been selected from those identified using experimental data and been used in the design of an adaptive predictive control system. Closed-loop control experiments have been conducted to verify the effectiveness of the developed system under varying set-points and varying travel speeds.

Original languageEnglish
Pages (from-to)1401-1411
Number of pages11
JournalControl Engineering Practice
Volume11
Issue number12
DOIs
StatePublished - Dec 2003

Bibliographical note

Funding Information:
This work is funded by the US National Science Foundation under Grant DMI-9812981, US National Shipbuilding Research Program, and the University of Kentucky Manufacturing Center.

Funding

This work is funded by the US National Science Foundation under Grant DMI-9812981, US National Shipbuilding Research Program, and the University of Kentucky Manufacturing Center.

FundersFunder number
University of Kentucky Center for Manufacturing
Directorate for Computer and Information Science and EngineeringDMI-9812981
Directorate for Computer and Information Science and Engineering
U.S. Department of Energy Chinese Academy of Sciences Guangzhou Municipal Science and Technology Project Oak Ridge National Laboratory Extreme Science and Engineering Discovery Environment National Science Foundation National Energy Research Scientific Computing Center National Natural Science Foundation of ChinaDMI-9812981
U.S. Department of Energy Chinese Academy of Sciences Guangzhou Municipal Science and Technology Project Oak Ridge National Laboratory Extreme Science and Engineering Discovery Environment National Science Foundation National Energy Research Scientific Computing Center National Natural Science Foundation of China

    Keywords

    • Manufacturing
    • Modeling
    • Predictive control
    • Welding

    ASJC Scopus subject areas

    • Control and Systems Engineering
    • Computer Science Applications
    • Electrical and Electronic Engineering
    • Applied Mathematics

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