Multi-speed resolver using ferrite stator and rotor structures

Details Multi-speed resolver using ferrite stator and rotor structures Multi-speed resolver using ferrite stator and rotor structures

1985-07-01

1987-06-09

Kozma, Thomas J.

Inductor devices

Relatively movable core and coil

Plural relatively movable core parts

310111, 310184, 310268, 336135, H01F 2106

Patent

active

046723471

ABSTRACT:
A resolver which in a preferred embodiment utilizes a stator member, preferably made of a single piece of ferrite material, which has active stator sine poles and active stator cosine poles and a rotor member which has passive rotor poles. The active stator poles have excitation voltage inputs supplied thereto and, as the rotor poles rotate relative thereto, the sine and cosine stator poles supply voltage outputs which vary sinusoidally and co-sinusoidally, respectively, as a function of the angular position of the rotor member relative to the stator member. Multiple stator and rotor pole combinations can be used to provide resolver operation at different speeds.

REFERENCES:
patent: 2442751 (1948-06-01), Abbott
patent: 3041486 (1962-06-01), Moffett
patent: 3230406 (1966-01-01), Henry-Baudot
patent: 4255682 (1981-03-01), Toida et al.
patent: 4458168 (1984-07-01), Welburn

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