Variable reluctance type angle detector

Details Variable reluctance type angle detector Variable reluctance type angle detector

2007-05-08

2007-05-08

Aurora, Reena (Department: 2862)

Electricity: measuring and testing

Magnetic

Displacement

C324S207180

Reexamination Certificate

active

11271826

ABSTRACT:
Provided is a variable reluctance type angle detector whose exciting winding resistance can be reduced to increase an exciting current without an increase in exciting power source voltage, thereby reducing an influence caused by a noise. The variable reluctance type angle detector includes: a stator including a plurality of teeth (2) inwardly formed at intervals in a circumferential direction, exciting coils (5) excited by a power source, and a-phase output coils (6) for outputting a change in magnetic flux as a voltage, the exciting coils (5) and the a-phase output coils (6) being formed in the teeth (2) by winding a wire on each of the teeth; and a rotor (4) including an iron core having a shape in which a gap permeance between the iron core and the stator (3) is sinusoidally changed, in which the exciting coils (5) formed in the teeth (2) which are different from one another are connected in series in a circumferential direction to produce a plurality of exciting coil groups and the exciting coil groups are connected in parallel to form an exciting winding (9).

REFERENCES:
patent: 5691590 (1997-11-01), Kawai et al.
patent: 08-178611 (1996-07-01), None

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