Magnetic bearing

Details Magnetic bearing Magnetic bearing

1989-08-08

1991-01-08

Skudy, R.

Electrical generator or motor structure

Dynamoelectric

Rotary

F16C 3906

Patent

active

049838695

ABSTRACT:
A magnetic bearing (10) in accordance with the invention includes a rotatably supported member (14) having a cylindrical magnet (12) with first and second ends which respectively are first and second magnetic poles with a magnetic field produced by the magnet having a uniform strength around a circumference of the first and second ends; a first sensor (34 or 36) for sensing a direction and amount of radial movement of the rotatable member along a first axis (54 or 56) from a uniform spacing with respect to an annulus (35) surrounding the rotatable member and producing a first signal proportional to the direction and amount of movement along the first axis; and a first electromagnetic circuit (16 to 18) producing an electromagnetic field proportional to the first signal which is additive to the magnetic field along the first axis extending in a radial direction of increased radial spacing between the annulus and the rotatable member and which is subtractive from the magnetic field along the first axis extending in a radial direction of decreased spacing.

REFERENCES:
patent: 3261210 (1966-07-01), Buchhold
patent: 3845997 (1974-11-01), Boden et al.
patent: 3865442 (1975-02-01), Studer
patent: 3877761 (1975-04-01), Boden
patent: 4037886 (1977-07-01), Boden et al.
patent: 4082376 (1978-04-01), Wehde et al.
patent: 4398773 (1983-08-01), Boden et al.
patent: 4583794 (1986-04-01), Takahara et al.

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