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

Christopher Lusty, Patrick Keogh

Research output: Contribution to journalArticle


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 customdesigned 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.
Original languageEnglish
Number of pages12
JournalJSME Mechanical Engineering Journal
Publication statusPublished - 28 Jun 2017


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