Title:
MAGNETICALLY LEVITATED TRANSPORTATION SYSTEM AND METHOD
Document Type and Number:
WIPO Patent Application WO2003095282
Kind Code:
A3
Abstract:
A magnetically levitated transportation system employs permanent magnet rails (63) along a guideway (64) that interact with permanent magnets (61) on a vehicle (60). The rails are optimized to reduce magnetic mass, while maximizing lift force. In one example, the arrays are composed of arrays of magnets (61, 63) having rotating magnetizations, such as Halbach arrays. In another example, the arrays are cup-shaped to provide stronger magnetic field forces in the central portion of the array, relative to the lateral portion of the array. The vehicle may be stabilized in the lateral and yaw directions with feedback controlled lateral control coils (66, 68) that interact with the permanent magnet rails on the guideway. Vertical, pitch and roll motions may be controlled or damped with eddy-current damper coils (67) or plates or with active feedback control (95) to control the coils.
Inventors:
FISKE ORLO JAMES
CHEN CHEN
RICCI MICHAEL RICHARD
PADEN BRADLEY EVAN
CHEN CHEN
RICCI MICHAEL RICHARD
PADEN BRADLEY EVAN
Application Number:
PCT/US2003/014413
Publication Date:
July 15, 2004
Filing Date:
May 07, 2003
Export Citation:
Assignee:
MAGTUBE INC (US)
International Classes:
B60L13/04; (IPC1-7): B61B13/00
Foreign References:
| US3791309A | 1974-02-12 | |||
| US3885504A | 1975-05-27 | |||
| US5722326A | 1998-03-03 | |||
| US5433155A | 1995-07-18 |
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