Control Performance, Stability Conditions, and Bifurcation Analysis of the Twelve-Pole Active Magnetic Bearings System

The active magnetic bearings system plays a vital role in high-speed rotors technology, where many research articles have discussed the nonlinear dynamics of different categories of this system such as the four-pole, six-pole, eight-pole, and sixteen-pole systems. Although the twelve-pole system has...

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Autores principales: Sabry M. El-Shourbagy, Nasser A. Saeed, Magdi Kamel, Kamal R. Raslan, Mohamed K. Aboudaif, Jan Awrejcewicz
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Publicado: MDPI AG 2021
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spelling oai:doaj.org-article:15884fd6df104db7b21c9ad4fc62e8aa2021-11-25T16:39:07ZControl Performance, Stability Conditions, and Bifurcation Analysis of the Twelve-Pole Active Magnetic Bearings System10.3390/app1122108392076-3417https://doaj.org/article/15884fd6df104db7b21c9ad4fc62e8aa2021-11-01T00:00:00Zhttps://www.mdpi.com/2076-3417/11/22/10839https://doaj.org/toc/2076-3417The active magnetic bearings system plays a vital role in high-speed rotors technology, where many research articles have discussed the nonlinear dynamics of different categories of this system such as the four-pole, six-pole, eight-pole, and sixteen-pole systems. Although the twelve-pole system has many advantages over the eight-pole one (such as a negligible cross-coupling effect, low power consumption, better suspension behaviors, and high dynamic stiffness), the twelve-pole system oscillatory behaviors have not been studied before. Therefore, this article is assigned to explore the effect of the magneto-electro-mechanical nonlinearities on the oscillatory motion of the twelve-pole system controlled via a proportional derivative controller for the first time. The normalized equations of motion that govern the system vibrations are established by means of classical mechanics. Then, the averaging equations are extracted utilizing the asymptotic analysis. The influence of all system parameters on the steady-state oscillation amplitudes is explored. Stability charts in a two-dimensional space are constructed. The stable margin of both the system and control parameters is determined. The obtained investigations reveal that proportional gain plays a dominant role in reshaping the dynamics and motion bifurcation of the twelve-pole systems. In addition, it is found that stability charts of the system can be controlled by simply utilizing both the proportional and derivative gains. Moreover, the numerical simulations showed that the twelve-poles system can exhibit both quasiperiodic and chaotic oscillations besides the periodic motion depending on the control parameters’ magnitude.Sabry M. El-ShourbagyNasser A. SaeedMagdi KamelKamal R. RaslanMohamed K. AboudaifJan AwrejcewiczMDPI AGarticletwelve-pole systemproportional derivative controllerPoincaré-mapbifurcation diagramfrequency spectrumstabilityTechnologyTEngineering (General). Civil engineering (General)TA1-2040Biology (General)QH301-705.5PhysicsQC1-999ChemistryQD1-999ENApplied Sciences, Vol 11, Iss 10839, p 10839 (2021)
institution DOAJ
collection DOAJ
language EN
topic twelve-pole system
proportional derivative controller
Poincaré-map
bifurcation diagram
frequency spectrum
stability
Technology
T
Engineering (General). Civil engineering (General)
TA1-2040
Biology (General)
QH301-705.5
Physics
QC1-999
Chemistry
QD1-999
spellingShingle twelve-pole system
proportional derivative controller
Poincaré-map
bifurcation diagram
frequency spectrum
stability
Technology
T
Engineering (General). Civil engineering (General)
TA1-2040
Biology (General)
QH301-705.5
Physics
QC1-999
Chemistry
QD1-999
Sabry M. El-Shourbagy
Nasser A. Saeed
Magdi Kamel
Kamal R. Raslan
Mohamed K. Aboudaif
Jan Awrejcewicz
Control Performance, Stability Conditions, and Bifurcation Analysis of the Twelve-Pole Active Magnetic Bearings System
description The active magnetic bearings system plays a vital role in high-speed rotors technology, where many research articles have discussed the nonlinear dynamics of different categories of this system such as the four-pole, six-pole, eight-pole, and sixteen-pole systems. Although the twelve-pole system has many advantages over the eight-pole one (such as a negligible cross-coupling effect, low power consumption, better suspension behaviors, and high dynamic stiffness), the twelve-pole system oscillatory behaviors have not been studied before. Therefore, this article is assigned to explore the effect of the magneto-electro-mechanical nonlinearities on the oscillatory motion of the twelve-pole system controlled via a proportional derivative controller for the first time. The normalized equations of motion that govern the system vibrations are established by means of classical mechanics. Then, the averaging equations are extracted utilizing the asymptotic analysis. The influence of all system parameters on the steady-state oscillation amplitudes is explored. Stability charts in a two-dimensional space are constructed. The stable margin of both the system and control parameters is determined. The obtained investigations reveal that proportional gain plays a dominant role in reshaping the dynamics and motion bifurcation of the twelve-pole systems. In addition, it is found that stability charts of the system can be controlled by simply utilizing both the proportional and derivative gains. Moreover, the numerical simulations showed that the twelve-poles system can exhibit both quasiperiodic and chaotic oscillations besides the periodic motion depending on the control parameters’ magnitude.
format article
author Sabry M. El-Shourbagy
Nasser A. Saeed
Magdi Kamel
Kamal R. Raslan
Mohamed K. Aboudaif
Jan Awrejcewicz
author_facet Sabry M. El-Shourbagy
Nasser A. Saeed
Magdi Kamel
Kamal R. Raslan
Mohamed K. Aboudaif
Jan Awrejcewicz
author_sort Sabry M. El-Shourbagy
title Control Performance, Stability Conditions, and Bifurcation Analysis of the Twelve-Pole Active Magnetic Bearings System
title_short Control Performance, Stability Conditions, and Bifurcation Analysis of the Twelve-Pole Active Magnetic Bearings System
title_full Control Performance, Stability Conditions, and Bifurcation Analysis of the Twelve-Pole Active Magnetic Bearings System
title_fullStr Control Performance, Stability Conditions, and Bifurcation Analysis of the Twelve-Pole Active Magnetic Bearings System
title_full_unstemmed Control Performance, Stability Conditions, and Bifurcation Analysis of the Twelve-Pole Active Magnetic Bearings System
title_sort control performance, stability conditions, and bifurcation analysis of the twelve-pole active magnetic bearings system
publisher MDPI AG
publishDate 2021
url https://doaj.org/article/15884fd6df104db7b21c9ad4fc62e8aa
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