Loading...

Welding current and arc voltage control in a GMAW process using ARMarkov based MPC

Mousavi Anzehaee, M ; Sharif University of Technology

1013 Viewed
  1. Type of Document: Article
  2. DOI: 10.1016/j.conengprac.2011.07.015
  3. Abstract:
  4. A predictive functional controller based on ARMarkov model structure has been designed to control welding current and arc voltage in a GMAW process. The closed loop system performance is investigated through computer simulations and is compared by those achieved from implementing two commonly used controllers i.e. PI and feedback linearization based PID. The local stability of the closed loop system is analyzed in the presence of uncertainties in the linearized model of the process as well as the control parameters. Finally it is shown that the proposed controller performs like a PI controller along with a pre-filter compensator
  5. Keywords:
  6. GMAW ; PI ; Welding current ; Arc voltage ; ARMarkov-PFC ; Control parameters ; Linearized models ; Local stability ; PI Controller ; Closed loop systems ; Computer simulation ; Control system stability ; Controllers ; Electric potential ; Electric welding ; Feedback linearization ; Model predictive control ; Uncertainty analysis ; Predictive control systems
  7. Source: Control Engineering Practice ; Volume 19, Issue 12 , December , 2011 , Pages 1408-1422 ; 09670661 (ISSN)
  8. URL: http://www.sciencedirect.com/science/article/pii/S0967066111001663