Title: Modelling and control for an EMS system with two inputs

Authors: Xiao Zhang; Ying Tan; Yungang Li; Iven Mareels

Addresses: The College of Mechatronic Engineering and Automation, The National University of Defense Technology, Changsha 410073, China. ' The Department of Electrical and Electronic Engineering, The University of Melbourne, Parkville, VIC, 3010, Australia. ' The College of Mechatronic Engineering and Automation, The National University of Defense Technology, Changsha 410073, China. ' The Department of Electrical and Electronic Engineering, The University of Melbourne, Parkville, VIC, 3010, Australia

Abstract: In an electromagnetic suspension system of a magnetic levitation vehicle, a single electromagnet with two control voltages (inputs) is the smallest electromechanical unit providing for a suspension force. In this paper, a non-linear controller using a feedback linearisation technique is developed on the basis of a non-linear model for such a suspension unit. The state feedback control law requires an observer, and a high-gain observer is proposed. The resulting observer-controller performance is illustrated using a simulation study.

Keywords: electromagnetic suspension; EMS; nonlinear control; nonlinear modelling; feedback linearisation; magnetic levitation vehicles; maglev; feedback control; high-gain observer; simulation.

DOI: 10.1504/IJMIC.2012.047126

International Journal of Modelling, Identification and Control, 2012 Vol.16 No.2, pp.190 - 198

Published online: 31 May 2012 *

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