Title :
Feedback linearization control of current and arc length in GMAW systems
Author :
Abdelrahman, Mohamed
Author_Institution :
Dept. of Electr. & Comput. Eng., Tennessee Technol. Univ., Cookeville, TN, USA
Abstract :
In this paper we design a model based nonlinear controller for a GMAW system. The controller uses nonlinear state feedback to exactly linearize and decouple the GMAW system. The linearized system is then controlled using 2-PI controllers. The effect of parameters uncertainty over the closed loop system performance is investigated and simulations that show the system performance are presented
Keywords :
arc welding; closed loop systems; control system synthesis; electric variables control; linearisation techniques; nonlinear control systems; state feedback; two-term control; uncertain systems; 2-PI controllers; GMAW systems; arc length control; closed loop system performance; current control; feedback linearization control; gas metal arc welding; model based nonlinear controller design; nonlinear state feedback; parameters uncertainty; system decoupling; Automatic control; Control systems; Equations; Heat transfer; Linear feedback control systems; Nonlinear control systems; State feedback; Weight control; Welding; Wire;
Conference_Titel :
American Control Conference, 1998. Proceedings of the 1998
Conference_Location :
Philadelphia, PA
Print_ISBN :
0-7803-4530-4
DOI :
10.1109/ACC.1998.707308
