Research of Modeling and Control Method for Electromagnetic Levitation System

There has been wide interest in the control scheme of the electromagnetic levitation system due to its disadvantages of nonlinearity and open-loop uncertainty. A typical coil-ball levitation system is used in research. The forces of the ball are analyzed and a dynamic model of the whole electromagne...

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Bibliographic Details
Published inApplied Mechanics and Materials Vol. 651-653; pp. 812 - 817
Main Authors He, Tian Peng, Zou, Zhi Gang, Zeng, Hui, Zheng, Jian Guo
Format Journal Article
LanguageEnglish
Published Zurich Trans Tech Publications Ltd 01.09.2014
Subjects
Pole Assignment
Electromagnetic Levitation System
LQR
Optimal Control
State Space
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Summary:There has been wide interest in the control scheme of the electromagnetic levitation system due to its disadvantages of nonlinearity and open-loop uncertainty. A typical coil-ball levitation system is used in research. The forces of the ball are analyzed and a dynamic model of the whole electromagnetic levitation system is established. Based on the nonlinear state-space model, the coil-ball system is linearized and then a LQR control approach is proposed. Simulation results show that, compared with conventional pole assignment scheme, the electromagnetic levitation system under the proposed control approach gets a better performance, including smaller overshot and faster response.
Bibliography:Selected, peer reviewed papers from the 2014 3rd International Conference on Advanced Engineering Materials and Architecture Science (ICAEMAS 2014), July 26-27, 2014, Huhhot, Inner Mongolia, China
ISBN:9783038352679
3038352675
ISSN:1660-9336
1662-7482
1662-7482
DOI:10.4028/www.scientific.net/AMM.651-653.812