Vibration reduction in a hollow-shaft rotor using flexibly-mounted internal-stator magnetic bearings

Autor: Christopher LUSTY, Patrick KEOGH
Jazyk: angličtina
Rok vydání: 2017
Předmět:
Zdroj: Mechanical Engineering Journal, Vol 4, Iss 5, Pp 17-00008-17-00008 (2017)
Druh dokumentu: article
ISSN: 2187-9745
76586944
DOI: 10.1299/mej.17-00008
Popis: A topology composed of a hollow-shaft rotor on rolling element bearings coupled with internal-stator magnetic bearings mounted on independently supported flexible shafts is considered for the purposes of vibration reduction. Details of a bespoke test rig constructed to assess this topology are presented. The rig makes use of custom-designed internal-stator magnetic bearings fabricated from Soft Magnetic Composite material. Results from standard numerical analysis of the rig are given to demonstrate the expected behaviour of the system, with a particular focus on its potential to reduce synchronous vibration seen in the rotor while passing critical speeds. These behaviours are then confirmed via a series of experimental tests. These results show that the proposed topology can be used effectively to alter the system vibration behaviour.
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