DocumentCode :
866988
Title :
Development of active magnetic bearings for high speed rotors
Author :
Boehm, J. ; Gerber, R. ; Hartley, J.R. ; Whitley, S.
Author_Institution :
Dept. of Pure & Appl. Phys., Salford Univ., UK
Volume :
26
Issue :
5
fYear :
1990
fDate :
9/1/1990 12:00:00 AM
Firstpage :
2544
Lastpage :
2546
Abstract :
A magnetically fully levitated rotor system has been designed and built. It consists of stator and rotor bearings for the rotating shaft, an electronic control system, an optical sensing system, and power amplifiers. For an application in which the rotor spins at high speeds in a vacuum, its position is controlled by infrared light sensors. The system has been shown to spin at frequencies of up to 140 Hz, and an extension of the rotational frequency to 1000 Hz is envisaged. The rotor vibrations have been shown to occur at theoretically predicted frequencies. The amplitudes of radial vibrations were kept below ±22 μm and mainly occurred at around ±10 μm
Keywords :
machine bearings; magnetic devices; magnetic levitation; rotors; stators; 1000 Hz; 140 Hz; active magnetic bearings; electronic control system; high speed rotors; infrared light sensors; magnetically fully levitated rotor system; optical sensing system; power amplifiers; radial vibrations; rotating shaft; rotor vibrations; stator; vacuum; Control systems; Frequency; Infrared sensors; Magnetic levitation; Optical amplifiers; Optical control; Optical sensors; Semiconductor optical amplifiers; Shafts; Stators;
fLanguage :
English
Journal_Title :
Magnetics, IEEE Transactions on
Publisher :
ieee
ISSN :
0018-9464
Type :
jour
DOI :
10.1109/20.104792
Filename :
104792
Link To Document :
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