Title :
Adaptive control of an arc welding process
Author :
Henderson, D.E. ; Kokotovic, P.V. ; Schiano, J.L. ; Rhode, D.S.
Author_Institution :
Caterpillar Inc., Peoria, IL, USA
Abstract :
A pseudogradient adaptive algorithm is successfully applied to self-tune a proportional-integral (PI) puddle-width controller for consumable-electrode gas metal arc welding. The gradient of the output with respect to the controller parameters is approximated and used to form a steepest-descent algorithm to minimize the squared output error. Experimental data confirming the algorithm performance are presented.<>
Keywords :
adaptive control; arc welding; self-adjusting systems; two-term control; PI puddle width controller; adaptive control; consumable-electrode gas metal arc welding; pseudogradient adaptive algorithm; self tuning; Adaptive algorithm; Adaptive control; Geometry; Linear systems; Pi control; Programmable control; Proportional control; Three-term control; Transfer functions; Welding;
Journal_Title :
Control Systems, IEEE
