KIEE - The Transactions of the Korean Institute of Electrical Engineers

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The Transactions of the Korean Institute of Electrical Engineers

The Transactions of the Korean Institute of Electrical Engineers

ISO Journal TitleTrans. Korean. Inst. Elect. Eng.

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Title	Switching Control of Electromagnetic Levitation System based on Jacobian Linearization and Input-Output Feedback Linearization
Authors	정민길(Jeong, Min-Gil) ; 최호림(Choi, Ho-Lim)
DOI	https://doi.org/10.5370/KIEE.2015.64.4.578
Page	pp.578-585
ISSN	1975-8359
Keywords	Electromagnetic levitation system ; Jacobian linearization ; Input-output feedback linearization ; Switching control
Abstract	Electromagnetic levitation system(EMLS) is one of the well known nonlinear systems. Often, it is not easy to control an EMLS due to its high nonlinearity. In this paper, we first apply two linearization method(jacobian and input-output feedback linearization) to design two feedback controllers for an EMLS. Then, by observing the advantages of each controller, we design a switching control algorithm which engage two controllers depending on the position of the steel ball in order to achieve the improved performance over each controller. The validity of our switching control approach is verified via both simulation and actual experimental results.

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