Segmented resolver

Details Segmented resolver Segmented resolver

1990-03-14

1991-06-18

Shoop, Jr., William M.

Electricity: motive power systems

Positional servo systems

Digital or numerical systems

310 36, 310 38, 310 39, 310254, G05B 1931

Patent

active

050252011

ABSTRACT:
This electrical resolver has an arcuate stator with a concave inner side concentric to a convex side of an angularly rotatable arcuate rotor limited to rotation within outer ends of the stator. The stator and rotor have arcuate magnetic cores with transverse slots in which are embedded windings made of insulated wire. Rotation of the rotor causes changes in voltages induced in the stator windings corresponding to the extent of angular position of the rotor. The stator windings include trimming coils which generate bucking voltages to reduce errors in determining angular position of the rotor. In an operating range of .+-.10.degree. from a centered position, magnitudes of rotor position can be determined with an accuracy of 5-10 arc seconds maximum, with a considerable savings in space, weight, cost, simplified installation, and increased stability over the operating temperature range.

REFERENCES:
patent: 1821123 (1931-09-01), Stuart
patent: 4250416 (1981-02-01), Watanabe et al.
patent: 4672347 (1987-06-01), Garcia et al.

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