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Patent Searching and Data


Title:
MAGNETIC BEARING DEVICE AND MAGNETIC FLOATING STAGE
Document Type and Number:
Japanese Patent JP2011185368
Kind Code:
A
Abstract:

To provide a magnetic bearing device which maintains desired magnetic bearing characteristics even if weight of a floating body to be supported is changed, in a structure provided with an electromagnet and a permanent magnet for sandwiching an electromagnet target.

This thrust magnetic bearing device 100 (magnetic bearing device) includes: the electromagnet target 1 attached to the floating body 110 and formed of magnetic material; the thrust electromagnet 2 including an upper magnetic pole portion 21 and an exciting coil 22, arranged oppositely to the electromagnet target 1, and supporting the electromagnet target 1 by magnetic attraction; and a thrust magnetic pole 3 arranged oppositely to the portion of the electromagnet target 1 on a side opposite to the thrust electromagnet 2, and including the permanent magnet 31 attracting the electromagnet target 1 by the magnetic attraction. The distance between the electromagnet target 1 and the thrust magnetic pole 3 can be adjusted.


Inventors:
Misu, Keijiro
Application Number:
JP2010000051834
Publication Date:
September 22, 2011
Filing Date:
March 09, 2010
Export Citation:
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Assignee:
YASKAWA ELECTRIC CORP
International Classes:
F16C32/04; G12B5/00