Impulse motor structure, drive system and control circuit

Details Impulse motor structure, drive system and control circuit Impulse motor structure, drive system and control circuit

1983-08-01

1985-08-13

Shoop, Jr., William M.

Electricity: motive power systems

Open-loop stepping motor control systems

318685, 310 49R, G05B 1940

Patent

active

045352798

ABSTRACT:
An impulse motor includes a stator and a rotor concentrically mounted about a rotational axis. A plurality of flat primary drive coils are circumferentially arranged around the stator and are connected in a parallel circuit. The primary drive coils are oriented to produce magnetic fields in radial directions when energized. The rotor is positioned inside the stator and has a plurality of electrically conductive elements circumferentially arranged around it. A plane formed by each conductive element is parallel to the rotational axis and is tilted a predetermined angle off a perpendicular formed with a radial axis. The magnetic fields produced by the primary drive coils induce circulating currents in the conductive elements. The circulating currents in the conductive elements in turn produce magnetic fields in directions generally orthogonal to the plane of the conductive elements. The magnetic fields of the conductive elements and the primary drive coils interact to create opposing forces with a resultant circumferential component which causes rotational motion of the rotor.

REFERENCES:
patent: 2931929 (1960-04-01), Snowdon et al.
patent: 3293459 (1966-12-01), Kreuter et al.
patent: 4249116 (1981-02-01), Hieda
patent: 4357551 (1982-11-01), Dulondel
J. T. Wilson, IBM Technical Disclosure Bulletin, vol. 15, No. 1, pp. 568-569, Jul. 1972.

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