Model based feedback control of gas tungsten arc welding - An experimental study
Paper in proceeding, 2015

In order to obtain high structural integrity and joint performance in welding a transient heat conduction model has been utilized to design a model based feedback controller. Gas tungsten arc welding of work-pieces of austenitic steel have been simulated by the finite element method. The basis for controller design is a low order model obtained from parametric system identification. The identification has been performed both on the finite element simulation and on physical welding. The low order model responses show a good agreement with both the finite element simulation result and the physical process response. An experimental study has been performed to verify the approach. This study also explores what experiments are needed for a successful design. It is shown that model based control successfully mitigates perturbations that occur during welding.

Author

Fredrik Sikström

University West

Anna-Karin Christiansson

University West

Bengt Lennartson

Chalmers, Signals and Systems, Systems and control

IEEE International Conference on Automation Science and Engineering

21618070 (ISSN) 21618089 (eISSN)

Vol. 2015-October 411-416
978-1-4673-8183-3 (ISBN)

Subject Categories

Robotics

DOI

10.1109/CoASE.2015.7294113

ISBN

978-1-4673-8183-3

More information

Latest update

7/12/2024