F - Mech Eng,Light,Heat,Weapons – 16 – C
Patent
F - Mech Eng,Light,Heat,Weapons
16
C
F16C 39/06 (2006.01) G05D 3/12 (2006.01)
Patent
CA 2064094
A magnetic bearing struc- ture is provided for supporting a rotatable member in suspended position relative to a stationary member (10) including axially spaced apart rings (22) associated with the stationary member (10), which hold a plurality of elec- tromagnetic coils (26) circumfer- entially about and radially spaced from a rotatable shaft (14). At least one cylindrically shaped permanant magnet (18) surrounds a portion of the shaft (14) and is positioned generally between the pair of arcuate rings (22). The permanent magnet (18) is axially polarized and is linked magneti- cally to the arcuate rings (22). All magnetic flux generated by the electromagnetic coils (26) and the permanent magnet (18) is directed radially through only a pair of air gaps (16) between the shaft and the rings. Position sensors (36, 38), along with a servo control circuit (40), detect and compensate for any radial displacement of the shaft (14) to maintain it in a metastable position relative to the stationary member (10).
Gowling Lafleur Henderson Llp
Meeks Crawford R.
LandOfFree
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