Robust nonlinear control of current and arc length in GMAW systems

A feedback linearization controller based on sliding mode control action for a gas metal arc welding (GMAW) system is proposed. The controller uses nonlinear state feedback to exactly linearize and decouple the GMAW system. The linearized system is then controlled using model reference sliding mode...

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Bibliographische Detailangaben
Hauptverfasser:	Jalili-Kharaajoo, M., Gholampour, V., Ebrahimirad, H., Ashari, A.E.
Format:	Tagungsbericht
Sprache:	eng
Schlagworte:	Closed loop systems Control system synthesis Control systems Linear feedback control systems Nonlinear control systems Robust control Sliding mode control State feedback Uncertain systems Welding
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Beschreibung
Zusammenfassung:	A feedback linearization controller based on sliding mode control action for a gas metal arc welding (GMAW) system is proposed. The controller uses nonlinear state feedback to exactly linearize and decouple the GMAW system. The linearized system is then controlled using model reference sliding mode controllers. The effect of parameter uncertainty over the closed loop system performance is investigated. Simulation results show the effectiveness of the proposed controller.
DOI:	10.1109/CCA.2003.1223201