Comparison of suboptimal control methods in magnetic levitation system

Alexander Smirnov; Rafal P. Jastrzebski; Katja Hynynen; Olli Pyrhonen

doi:10.1109/EPE.2013.6631929

Comparison of suboptimal control methods in magnetic levitation system

Alexander Smirnov, Rafal P. Jastrzebski, Katja Hynynen, Olli Pyrhonen

Not published at Aalto University

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution › Scientific › peer-review

7 Citations (Scopus)

Abstract

The use of active magnetic bearings (AMB) is increasing in high-speed applications, because their low friction operation allows higher rotational speeds than the traditional bearings. The inherent instability and complexity of the AMB rotor system with high nonlinearities pose challenges to the controller design. This leads to a problem of robust design. Robustness of LQG and loop-shaping H∞ controllers is compared with the help of the evolutionary algorithm both theoretically and based on experimental measurements.

Original language	English
Title of host publication	2013 15th European Conference on Power Electronics and Applications, EPE 2013
Number of pages	10
DOIs	https://doi.org/10.1109/EPE.2013.6631929
Publication status	Published - 2013
MoE publication type	A4 Article in a conference publication
Event	European Conference on Power Electronics and Applications - Lille, France Duration: 2 Sep 2013 → 6 Sep 2013 Conference number: 15

Conference

Conference	European Conference on Power Electronics and Applications
Abbreviated title	EPE
Country	France
City	Lille
Period	02/09/2013 → 06/09/2013

Keywords

active damping
genetic algorithm
Magnetic bearings
optimisation
robust control

Access to Document

10.1109/EPE.2013.6631929

Link to publication in Scopus

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Cite this

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abstract = "The use of active magnetic bearings (AMB) is increasing in high-speed applications, because their low friction operation allows higher rotational speeds than the traditional bearings. The inherent instability and complexity of the AMB rotor system with high nonlinearities pose challenges to the controller design. This leads to a problem of robust design. Robustness of LQG and loop-shaping H∞ controllers is compared with the help of the evolutionary algorithm both theoretically and based on experimental measurements.",

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AB - The use of active magnetic bearings (AMB) is increasing in high-speed applications, because their low friction operation allows higher rotational speeds than the traditional bearings. The inherent instability and complexity of the AMB rotor system with high nonlinearities pose challenges to the controller design. This leads to a problem of robust design. Robustness of LQG and loop-shaping H∞ controllers is compared with the help of the evolutionary algorithm both theoretically and based on experimental measurements.

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KW - genetic algorithm

KW - Magnetic bearings

KW - optimisation

KW - robust control

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Y2 - 2 September 2013 through 6 September 2013

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