Control system for a magnetic levitation body

Details Control system for a magnetic levitation body Control system for a magnetic levitation body

1989-10-13

1992-03-03

Pellinen, A. D.

Electricity: electrical systems and devices

Control circuits for electromagnetic devices

Systems for magnetizing, demagnetizing, or controlling the...

307104, 310 905, H02N 1500

Patent

active

050937545

ABSTRACT:
A method for controlling an initial position of a magnetically levitated body comprises sensing the position of the levitated body by position sensors and applying exciting currents to electromagnets in response to the sensed position to adjust the position of the body to an initial central position. The sensing step comprises detecting a first limiting position of the body in a first direction and detecting a second limiting position of the body in a second direction opposite the first direction. The applying step comprises calculating a central position from the first and second limiting positions and applying exciting currents to the electromagnets to move the body into the calculated central position. An apparatus for controlling positioning of a magnetically levitated body based on limiting positions is also disclosed.

REFERENCES:
patent: 4686404 (1987-08-01), Nakazeki
patent: 4795927 (1989-01-01), Morii et al.
patent: 4879500 (1989-11-01), Kanemitsu
patent: 4910633 (1990-03-01), Quinn

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