Title :
Microprocessor-based arc voltage control for gas tungsten arc welding using gain scheduling
Author :
Bjorgvinsson, Jon B. ; Cook, George E. ; Andersen, Kristinn
Author_Institution :
Dept. of Electr. Eng., Vanderbilt Univ., Nashville, TN, USA
Abstract :
Limitations of the traditional automatic voltage controller (AVC) for gas tungsten arc welding are explained and the characteristics of the welding arc that cause these limitations are presented. The design of an adaptive AVC using a microprocessor-based controller is described. The enhanced AVC uses gain scheduling to maintain optimum gain in the feedforward loop of the system and offers a constant arc length control mode which is useful under conditions where the welding currents is varied over a wide range.<>
Keywords :
adaptive control; arc welding; arcs (electric); control system synthesis; microcomputer applications; optimal control; process computer control; voltage control; adaptive optimal control; arc voltage control; controller; design; feedforward loop; gain scheduling; gas tungsten arc welding; microprocessors; process computer control; Adaptive control; Automatic control; Automatic voltage control; Microprocessors; Plasma welding; Processor scheduling; Programmable control; Temperature control; Tungsten; Voltage control;
Conference_Titel :
Industry Applications Society Annual Meeting, 1990., Conference Record of the 1990 IEEE
Conference_Location :
Seattle, WA, USA
Print_ISBN :
0-87942-553-9
DOI :
10.1109/IAS.1990.152435
