Research of Modeling and Control Method for Electromagnetic Levitation System

Jian Guo Zheng; Zhi Gang Zou; Hui Zeng; Tian Peng He

doi:10.4028/www.scientific.net/AMM.651-653.812

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HomeApplied Mechanics and MaterialsApplied Mechanics and Materials Vols. 651-653Research of Modeling and Control Method for...

Research of Modeling and Control Method for Electromagnetic Levitation System

Abstract:

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.

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Periodical:

Applied Mechanics and Materials (Volumes 651-653)

Pages:

812-817

DOI:

https://doi.org/10.4028/www.scientific.net/AMM.651-653.812

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Online since:

September 2014

Authors:

Jian Guo Zheng*, Zhi Gang Zou, Hui Zeng, Tian Peng He

Keywords:

Electromagnetic Levitation System, LQR, Optimal Control, Pole Assignment, State Space

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