Planar maglev positioning system

Details Planar maglev positioning system Planar maglev positioning system

2007-03-06

2007-03-06

Morano, S. Joseph (Department: 3617)

Railways

Magnetically suspended car

C310S090500

Reexamination Certificate

active

10794050

ABSTRACT:
A six-degree-of-freedom magnetic levitation positioning system includes a levitated platform, six impelling coils disposed adjacent to the platform, and six permanent magnets attached to the platform such that each of the permanent magnets is adjacent to and magnetically aligned with a respective one of the impelling coils, whereby there are six magnet-coil sets. Among the six sets, three of the sets are maglev sets in which magnetic axes of the impelling coils are generally vertically aligned, and another three of the sets are horizontal impelling sets in which magnetic axes of the impelling coils are generallv horizontally aligned. The magnetic axes of the three horizontal impelling sets are all mutually non-parallel, so that elevation and tiltings of the platform can be actuated by adjusting the currents in coils of the three maglev sets, and translations and rotations about a vertical axis of the platform can be actuated by adjusting the currents in coils of the three horizontal impelling sets. Thus, motion in every degree of freedom (three rotations and three translations) is possible.

REFERENCES:
patent: 5218257 (1993-06-01), Tozoni
patent: 5319275 (1994-06-01), Tozoni
patent: 5652472 (1997-07-01), Tozoni
Kim et al., High-Precision Control of a Maglev Linear Actuator with Nanopositioning Capability, 2002 AACC/Proceedings of the American Control Conference, p. 4279-4284.
Jung et al., Study on a Novel Contact-Free Planar System Using Direct Drive DC Coil and Permanent Magnets, 2002 IEEE/ASME transactions on Mechatronics, vol. 7, No. 2, p. 35-43.
Kim et al., Modeling and Vector Control of Planar Magnetic Levitator, 1998 IEEE, vol. 34, No. 6, p. 1254-1262.

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