Brief paper: Control of dynamic keyhole welding process

Authors:
Y. M. Zhang;Y. C. Liu
Affiliations:
Center for Manufacturing and Department of Electrical and Computer Engineering, University of Kentucky, Lexington, KY 40506, USA;Center for Manufacturing and Department of Electrical and Computer Engineering, University of Kentucky, Lexington, KY 40506, USA
Venue:
Automatica (Journal of IFAC)
Year:
2007

Citing 8
Cited 0

Generalized predictive control—Part I. The basic algorithm

Automatica (Journal of IFAC)
On linear programming and robust modelpredictive control using impulse-responses

Systems & Control Letters
An overview of extremal properties for robust control of interval plants

Automatica (Journal of IFAC)
Robust predictive control of systems with uncertain impulse response

Automatica (Journal of IFAC)
Control of dynamic keyhole welding process

Control of dynamic keyhole welding process
Brief Min-max predictive control techniques for a linear state-space system with a bounded set of input matrices

Automatica (Journal of IFAC)
Quasi-Min-Max MPC algorithms for LPV systems

Automatica (Journal of IFAC)
Nonlinear interval model control of quasi-keyhole arc welding process

Automatica (Journal of IFAC)

Quantified Score

Hi-index	22.14

Visualization

Abstract

Weld joint penetration control is a basic research topic in the welding research community. The authors propose using an innovative plasma arc welding process referred to as the quasi-keyhole process to achieve less application-dependent weld joint penetration sensing and control. To control the quasi-keyhole process, the peak current and keyhole sustaining current are selected as the control variables to maintain the keyhole establishment and sustaining periods at desired values. The dynamic quasi-keyhole process is approximated by a linear model with interval parameters. A control algorithm has been developed for the multivariable interval quasi-keyhole process based on a predictive control algorithm for interval SISO models. Experiments have been conducted to test the effectiveness of the control system developed.