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http://dx.doi.org/10.5370/KIEE.2017.66.5.812

Design of a Reduced-Order Disturbance Observer Controller for EMS System with Mass Uncertainty  

Jo, Nam-Hoon (Dept. of Electrical Engineering, Soongsil Univerity)
Publication Information
The Transactions of The Korean Institute of Electrical Engineers / v.66, no.5, 2017 , pp. 812-818 More about this Journal
Abstract
In this paper, we design a reduced-order disturbance observer (DOB) controller for an EMS (Electro-Magnetic Suspension) system with mass uncertainty. Compared with conventional DOB controller, the proposed reduced-order DOB controller can be implemented in a simpler way, since it uses reduced order nominal model and Q-filter. It is shown that the nominal model for the proposed DOB controller should be carefully chosen in order to achieve the robust stability in the present of mass uncertainty. Computer simulation results to validate the effectiveness of the proposed DOB controller are included.
Keywords
Disturbance observer(DOB); EMS system; Nominal model;
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Times Cited By KSCI : 1  (Citation Analysis)
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