Magnetic levitating transporting apparatus with a movable magnet

Details Magnetic levitating transporting apparatus with a movable magnet Magnetic levitating transporting apparatus with a movable magnet

1994-01-19

1994-11-01

Oberleitner, Robert J.

Railways

Magnetically suspended car

Including means to sense or control car position or attitude...

B60L 1306

Patent

active

053604709

ABSTRACT:
A magnetic levitating transportation apparatus comprising a rail and a vehicle capable of travelling along the rails by a linear motor and caused to magnetically levitate by magnet units including permanent magnets and electro-magnets. The gap between the rail and each of the magnetic units is controlled by controlling the current supplied to the magnet units so that the current is substantially zero when the vehicle is in the levitated condition. One of the magnet units is movably mounted to the vehicle and moved by the piezoelectric actuator so that the gap between this magnet unit and the rail can be adjusted. The controller controls the piezoelectric actuator based on the current supplied to the magnet units.

REFERENCES:
patent: 4732087 (1988-03-01), Morishita et al.
patent: 4787317 (1988-11-01), Bohn et al.
patent: 4972779 (1990-11-01), Morishita et al.
patent: 5067415 (1991-11-01), Morishita et al.
patent: 5140208 (1992-08-01), Tozoni

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