Multipolar resolver
AssigneeOkuma Machinery Works Ltd.
InventorsRyuji Toida, Yuji Sakai, Mitsuru Ikegami
Life of this patent
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Abstract
A multipolar resolver is so constructed that the need of the conventionally indispensable coil on the resolver rotor is eliminated by providing a center coil on a stator, and 5n or 3n rotor poles and 4n stator poles are provided where n is a positive integer. Sine and consine coils are wound on the stator poles alternately, thus simplifying the construction of the multipolar resolver.
Claims6
A multipolar resolver comprising a substantially cylindrical rotor of magnetic material with 5n rotor poles provided equidistantly on the outer periphery thereof where n is a positive integer, a stator of magnetic material with 4n stator poles proveded equidistantly along the circumference concentric with the axis of said rotor, a central coil provided on said stator along substantially the same axis as said rotor axis, and sine and cosine coils wound on said stator poles, said sine and cosine coils being wound alternately on said stator poles, said sine coils being connected in series with each other and wound in opposite directions of winding alternately, and said cosine coils being connected in series with each other and wound in opposite directions of winding alternately.
A multipolar resolver comprising a substantially cylindrical rotor of magnetic material with 3n rotor poles provided equidistantly on the outer periphery thereof where n is a positive integer, a stator of magnetic material with 4n stator poles provided equidistantly along the circumference concentric with the axis of said rotor, a central coil provided on said stator along substantially the same axis as said rotor axis, and sine and cosine coils wound on said stator poles, said sine and cosine coils being wound alternately on said stator poles, said sine coils being connected in series with each other and wound in opposite directions of winding alternately, and said cosine coils being connected in series with each other and wound in opposite directions of winding alternately.
Dependencies are inferred from the claim text.