Optimal model predictive control of plasma pipe welding process

Author

Qian, Kun ; Zhang, YuMing

Author_Institution

Dept. of Electr. & Comput. Eng., Univ. of Kentucky, Lexington, KY

fYear

2008

fDate

23-26 Aug. 2008

Firstpage

492

Lastpage

497

Abstract

This paper addresses the development of an optimal model predictive control system for quasi-keyhole arc pipe welding process (QAPWP). To this end, a single input two output (SITO) linear discrete model structure is proposed through mechanism analysis. Its parameters are identified offline and updated online. An optimal model predictive control (MPC) algorithm is designed to control the process. Closed-loop control experiments verified the effectiveness of the developed controller despite the variations in the manufacturing conditions.

Keywords

arc welding; closed loop systems; optimal control; pipes; predictive control; closed-loop control experiment; optimal model predictive control; plasma pipe welding process; quasi-keyhole arc pipe welding process; single input two output linear discrete model structure; Automation; Bridge circuits; Nuclear and plasma sciences; Plasma welding; Power supplies; Predictive control; Predictive models; Process control; USA Councils; Voltage;

fLanguage

English

Publisher

ieee

Conference_Titel

Automation Science and Engineering, 2008. CASE 2008. IEEE International Conference on

Conference_Location

Arlington, VA

Print_ISBN

978-1-4244-2022-3

Electronic_ISBN

978-1-4244-2023-0

Type

conf

DOI

10.1109/COASE.2008.4626562

Filename

4626562