Bearing for use in high resolution precision control device

Details Bearing for use in high resolution precision control device Bearing for use in high resolution precision control device

1992-04-22

1994-03-15

Skudy, R.

Electrical generator or motor structure

Dynamoelectric

Rotary

310181, 318592, H02K 709, G05B 1302

Patent

active

052948544

ABSTRACT:
A magnetic bearing is provided which may be utilized in a fine position control or movement system. Stability is enhanced by providing separate mechanisms for supporting the weight of a platen or other object being controlled with electromagnets utilized to control or compensate for motion of the platen in N degrees of freedom. The support mechanism is preferably one or more permanent magnets having an air gap with the platen which is greater than the air gap for the electromagnets. The mechanisms for supporting the weight of the platen may be made adjustable so as to support the weight of the platen regardless of any changes in such weight by, for example, adjusting the air gap for the permanent magnet to compensate for weight changes. Resonant vibration is reduced by constructing the platen of a hollowed, cellular structure, for example, a honeycomb structure.

REFERENCES:
patent: 1589039 (1926-06-01), Anshutz-Kaempfe
patent: 3845996 (1974-11-01), Geweke
patent: 4475033 (1984-10-01), Willemsen et al.
patent: 4644205 (1987-02-01), Sudo et al.
patent: 4700094 (1987-10-01), Downer et al.
patent: 4841204 (1989-06-01), Studer
patent: 4874998 (1989-10-01), Hollis, Jr.
patent: 4947067 (1990-08-01), Habermann et al.
patent: 4991438 (1991-02-01), Evans
patent: 5157296 (1992-10-01), Trumper

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