Electrical generator or motor structure – Dynamoelectric – Linear
Patent
1991-08-16
1993-03-23
Stephan, Steven L.
Electrical generator or motor structure
Dynamoelectric
Linear
310 905, 318135, H02K 4100
Patent
active
051967456
ABSTRACT:
A device for controlling the relative position between a movable platen and a stator, with linear motions, for example in the 200 to 300 mm range, being provided in one or two of the degrees of freedom and precision control in the 10 nm range being provided in six degrees of freedom. Linear motion is provided by adjacent pairs of magnetic arrays and coil arrays, with the magnetic array of each pair preferably being mounted to the platen and the coil array to the stator. Both arrays have smooth mating surfaces spaced by a predetermined gap. Adjacent magnets of each magnetic array are oppositely poled and each coil array has multiple phases, the pitches of the two adjacent arrays preferably being substantially equal. The weight of the platen may be supported by the magnetic and coil arrays or separate magnets may be provided for this purpose.
REFERENCES:
patent: 3376578 (1968-04-01), Sawyer
patent: 3771033 (1973-11-01), Matsui
patent: 3829746 (1974-08-01), Van et al.
patent: 3937148 (1976-02-01), Simpson
patent: 4055123 (1977-10-01), Heidelberg
patent: 4300807 (1981-12-01), Poubeau
patent: 4369388 (1983-01-01), Ban et al.
patent: 4509002 (1985-04-01), Hollis, Jr.
patent: 4628238 (1986-12-01), Smulders et al.
patent: 4644205 (1987-02-01), Sudo et al.
patent: 4654571 (1987-03-01), Hinds
patent: 4689529 (1987-08-01), Higuichi
patent: 4698575 (1987-10-01), Bouwer
patent: 4700100 (1987-10-01), Congdon et al.
patent: 4754185 (1988-06-01), Gabriel et al.
patent: 4766358 (1988-08-01), Higuchi
patent: 4788477 (1988-11-01), Teramachi
patent: 4807729 (1978-05-01), Yamazaki et al.
patent: 4874998 (1989-10-01), Hollis, Jr.
patent: 4885490 (1989-12-01), Takahara
patent: 4900962 (1990-02-01), Hockney et al.
patent: 4965864 (1990-10-01), Roth et al.
patent: 5038062 (1991-08-01), Shikari
patent: 5079493 (1992-01-01), Futami et al.
patent: 6341191 (1987-01-01), Studer
M. Morishita, "A New Maglev System for Magnetically Levitated Carrier System" May 14 to 16, 1986, pp. 199-204.
F. Matsumuar, "Completely Contactless Linear DC Motor Using Magnetic Suspension" 1987, pp. 95-103.
Slocum, "Design Considerations for Ultra-Precision Magnetic Bearing Supported Slides", Feb. 2-4, 1988, pp. 1-29.
Jones Judson H.
Massachusetts Institute of Technology
Stephan Steven L.
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