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Magnetic bearing configurations: Theoretical and experimental studies

DSpace at IIT Bombay

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Title Magnetic bearing configurations: Theoretical and experimental studies
 
Creator SAMANTA, P
HIRANI, H
 
Subject journal bearing
hydrodynamic bearing
low-friction bearing
natural frequency of magnetic bearing
permanent-magnet bearing
wearless bearing
 
Description A radial magnetic bearing, consisting of two permanent magnets, is an attractive choice because of its zero wear, negligible friction, and low cost, but it suffers from low load capacity, low radial stiffness, lack of damping, and high axial instability. To enhance the radial load and radial stiffness, and reduce the axial thrust, we have made a theoretical and experimental study of various radial configurations, including hydrodynamic lubrication to improve dynamic performance of the magnetic bearing. We developed an experimental setup to investigate the performance of bearing configurations under different operating conditions. The motion of a rotating shaft is mapped by two displacement sensors with a data acquisition system and personal computer. The first critical speed of each configuration is determined experimentally and verified through frequency analysis. We present a polar plot of displacement data.
 
Publisher IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC
 
Date 2011-08-01T06:48:54Z
2011-12-26T12:53:18Z
2011-12-27T05:40:34Z
2011-08-01T06:48:54Z
2011-12-26T12:53:18Z
2011-12-27T05:40:34Z
2008
 
Type Article
 
Identifier IEEE TRANSACTIONS ON MAGNETICS, 44(2), 292-300
0018-9464
http://dx.doi.org/10.1109/TMAG.2007.912854
http://dspace.library.iitb.ac.in/xmlui/handle/10054/8370
http://hdl.handle.net/10054/8370
 
Language en