Control electromagnet

Details Control electromagnet Control electromagnet

1988-12-22

1991-03-12

Ro, Bentsu

Electricity: motive power systems

Open-loop stepping motor control systems

310 49R, H02P 800

Patent

active

049995596

ABSTRACT:
In a stationary electromagnet creating a multipole-nuclei dipole field for controlling the rotation around its axis of a movable element housing a permanent magnet, each of the electromagnet poles is shaped in the form of a circular arc having a corresponding opening angle from about 40 to about 110 degrees. Also the permanent magnet poles have faces shaped in the form of a circular arc, and in a preferred embodiment the permanent magnet is provided with grooves on both the pole faces, said grooves being parallel to the permanent magnet rotation axis.

REFERENCES:
patent: 3041516 (1962-06-01), Bailey
patent: 3344325 (1967-09-01), Sklaroff
patent: 3445741 (1969-05-01), Gerber
patent: 3599069 (1971-08-01), Welch
patent: 3720865 (1973-03-01), Bregeault
patent: 4002022 (1977-01-01), Lopez
patent: 4095161 (1978-06-01), Heine et al.
patent: 4161832 (1979-07-01), Bergamini
patent: 4532447 (1985-07-01), Cibie
patent: 4672253 (1987-06-01), Tajima et al.

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