Title :
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
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;
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
DOI :
10.1109/COASE.2008.4626562
