To enable elimination of an initial position variation of a levitating body caused by friction or the like, and to suppress position variations of the levitating body caused by a steady external force, by using not only substantial zero power control but also using control for converging an absolute position of the levitating body to zero.
A magnetic levitation device includes: a levitating body 10; a magnetic unit 23 that forms a magnetic circuit through a permanent magnet and an electromagnet in the levitating body 10; a movable frame 22 that secures the magnetic unit 23; a fixed frame 21 that supports the movable frame 22; a movable frame supporting mechanism 27 that can support the movable frame 22 to the fixed frame 21 and adjust a distance between the fixed frame 21 and the movable frame 22; a first sensor 24 that measures a relative displacement between the levitating body 10 and the magnetic unit 23; a second sensor 25 that measures a relative displacement between the fixed frame 21 and the movable frame 22; and a controller that stably supports the levitating body 10 in contactless manner by controlling current of a magnet according to each output of the first and second sensors 24, 25.
KATSUKI KENJI
| JPH03153918A | 1991-07-01 | |||
| JP2012007719A | 2012-01-12 | |||
| JP2007107722A | 2007-04-26 | |||
| JPH01315204A | 1989-12-20 | |||
| JPS58186144A | 1983-10-31 | |||
| JPH03153918A | 1991-07-01 |
Takakura Shigeo
Makoto Nakamura
Yoshihiro Fukuhara
Takashi Mine
Toshio Shirane
Nobuhisa Nogawa
Kocho Chojiro
Naoki Kono
Katsu Sunagawa
Morisezo Iseki
Takao Ako
Tadashi Inoue
Tatsushi Sato
Takashi Okada
Mihoko Horiuchi
Takenori Masanori