ELECTROMAGNETIC ACTUATOR

Japanese Patent JP3488904

B2

PROBLEM TO BE SOLVED: To provide an electromagnetic actuator which obtains a large driving force, in which the responsiveness of the generation of a driving force to an input control signal is good and in which a setting property to a prescribed driving position is good.
SOLUTION: An actuator is composed of permanent magnetic field generating parts 1, 2 which generate permanent magnetic fields and of a current-passage formation part 3, which is movable relative to the permanent magnetic field generation parts 1, 2 and in which a current passage crossed with the permanent magnetic fields is formed by a current according to an input control signal. The permanent magnetic field generating parts 1, 2 at the actuator generate two permanent magnetic fields in mutually crossed directions by, e.g. two pairs of magnets 13A, 13B and 23A, 23B. A current-passage formation part 3 is provided with two coils L1 which are crossed respectively with the two magnetic fields, and the coils L1 are formed in such a way that their winding axes are nearly on the same line. An object to be driven is driven by relative movements, which are generated between respective magnets 13A, 13B, 23A, and 23B and the coils L1 by two electromagnetic forces which are generated between the magnets 13A, 13B and those 23A, 23B and the coils L1.

JP2005020901	LINEAR ACTUATOR
JPS5927176	[Title of the Invention] A control method of a moving coil type actuator

Yuji Ikedo
Atsushi Yamane
Hiroyuki Watanabe

JP28836296A

January 19, 2004

October 30, 1996

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Pioneer Corporation
CASIO COMPUTER CO.,LTD.

H02K33/18; (IPC1-7): H02K33/18

JP2306214A
JP63220430A
JP6281963A

Motohiko Fujimura

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