Please use this identifier to cite or link to this item: https://doi.org/10.1016/j.physc.2012.07.007
Title: Roles of superconducting magnetic bearings and active magnetic bearings in attitude control and energy storage flywheel
Authors: Tang, J.
Fang, J.
Ge, S.S. 
Keywords: Active magnetic bearing (AMB)
Attitude control and energy storage flywheel (ACESF)
Field cooling
Gyroscopic effect
Superconducting magnetic bearing (SMB)
Issue Date: 14-Dec-2012
Source: Tang, J., Fang, J., Ge, S.S. (2012-12-14). Roles of superconducting magnetic bearings and active magnetic bearings in attitude control and energy storage flywheel. Physica C: Superconductivity and its Applications 483 : 178-185. ScholarBank@NUS Repository. https://doi.org/10.1016/j.physc.2012.07.007
Abstract: Compared with conventional energy storage flywheel, the rotor of attitude control and energy storage flywheel (ACESF) used in space not only has high speed, but also is required to have precise and stable direction. For the presented superconducting magnetic bearing (SMB) and active magnetic bearing (AMB) suspended ACESF, the rotor model including gyroscopic couples is established originally by taking the properties of SMB and AMB into account, the forces of SMB and AMB are simplified by linearization within their own neighbors of equilibrium points. For the high-speed rigid discal rotor with large inertia, the negative effect of gyroscopic effect of rotor is prominent, the radial translation and tilting movement of rotor suspended by only SMB, SMB with equivalent PMB, or SMB together with PD controlled AMB are researched individually. These analysis results proved originally that SMB together with AMB can make the rotor be stable and make the radial amplitude of the vibration of rotor be small while the translation of rotor suspended by only SMB or SMB and PM is not stable and the amplitude of this vibration is large. For the stability of the high-speed rotor in superconducting ACESF, the AMB can suppress the nutation and precession of rotor effectively by cross-feedback control based on the separated PD type control or by other modern control methods. © 2012 Elsevier B.V. All rights reserved.
Source Title: Physica C: Superconductivity and its Applications
URI: http://scholarbank.nus.edu.sg/handle/10635/57317
ISSN: 09214534
DOI: 10.1016/j.physc.2012.07.007
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