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

fYear

1990

fDate

7-12 Oct. 1990

Firstpage

1840

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;

fLanguage

English

Publisher

ieee

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

Type

conf

DOI

10.1109/IAS.1990.152435

Filename

152435