Sheet coil type resolver
AssigneeMinebea Co., Ltd.
InventorsTakako Fukuda, Takaaki Ochiai
Life of this patent
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Abstract
A sheet coil type is provided in which a detection coil of two phases is disposed at a stator section and structured such that a coil of sine phase a coil of cosine phase are circumferentially arranged alternately on the same plane, wherein the distance between an excitation coil at a rotor section and the coil of sine phase at the stator section is identical to the distance between the excitation coil at the rotor section and the coil of cosine phase at the stator section, whereby the difference in amplitude between at a sine phase output and at a cosine phase output is eliminated.
Claims16
A sheet coil type resolver comprising:
- a resolver stator coil portion comprising a plurality of stator coil patterns which have a planar shape and each of which has at least one spiral coil pattern and which are disposed circumferentially on a same plane, wherein the plurality of stator coil patterns constitute a coil group of two phases having a phase difference of a mechanical angle of 90 degrees from each other;
- and
- a resolver rotor coil portion disposed to axially oppose the resolver stator coil portion with a distance therebetween;
- wherein the plurality of stator coil patterns are disposed such that a stator coil pattern of a first phase and a stator coil pattern of a second phase are arranged alternately on the same plane, and
- wherein the resolver rotor coil portion comprises a plurality of rotor coil patterns which have a planar shape and each of which has at least one spiral coil pattern, each of the rotor coil patterns have an area size corresponding to a sum area size of two adjacent stator coil patterns, and the rotor coil patterns are circumferentially connected in series to one another thereby constituting a coil group of one phase.
A sheet coil type resolver comprising:
- a resolver stator coil portion comprising a plurality of stator coil patterns which have a planar shape and each of which has at least one spiral coil pattern and which are disposed circumferentially on a same plane, wherein the plurality of stator coil patterns constitute a coil group of two phases having a phase difference of a mechanical angle of 90 degrees from each other;
- and
- a resolver rotor coil portion disposed to axially oppose the resolver stator coil portion with a distance therebetween;
- wherein the plurality of stator coil patterns are disposed such that a stator coil pattern of a first phase and a stator coil pattern of a second phase are arranged alternately on the same plane,
- wherein the resolver rotor coil portion comprises a plurality of rotor coil patterns which have a planar shape and each of which has at least one spiral coil pattern, and the rotor coil patterns are circumferentially connected in series to one another thereby constituting a coil group of one phase, and
- wherein the plurality of rotor coil patterns, the plurality of stator coil patterns of the first phase, and the plurality of stator coil patterns of the second phase are equal in number.
Dependencies are inferred from the claim text.