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Adaptive Sliding Mode Control for Magnetic levitation system

Shibly Ahmed Al-Samarraie --- Bashar Fateh Midhat --- Rand Ahmed Bahaa Al-Deen

AL-NAHRAIN JOURNAL FOR ENGINEERING SCIENCES مجلة النهرين للعلوم الهندسية
ISSN: 25219154 / eISSN 25219162 Year: 2018 Volume: 21 Issue: 2 Pages: 266-274
Publisher: Al-Nahrain University جامعة النهرين

Abstract

In this paper, an Adaptive Sliding Mode Controller (ASMC) is designed and applied for a magnetic levitation system (Maglev) where a steel ball is desired to be stabilized at a desired position with existence of uncertainty in system model. Additionally, a sliding mode differentiator (SMD) is used for estimating the ball velocity since it’s needed for the controller to work properly. The designed controller and differentiator are applied practically to an experimental laboratory size magnetic levitation system and the results were plotted to show the behavior of the system under the effect of the designed controller. The experimental results reveal clearly the effectiveness and ability of the suggested controller in forcing the steel ball to follow various desired position.

Keywords

Sliding mode differentiator --- Adaptive sliding mode control --- Magnetic levitation system.