Electricity: measuring and testing – Magnetic – Displacement
Reexamination Certificate
2006-11-14
2006-11-14
Lefkowitz, Edward (Department: 2862)
Electricity: measuring and testing
Magnetic
Displacement
C324S207170, C324S207220, C310S06800R, C310S168000, C318S661000
Reexamination Certificate
active
07135860
ABSTRACT:
A variable reluctance resolver has a rotor with magnetic poles with 2× or greater axis combination angles, and is structured so that reliable and accurate zero point detection can be carried out. Concave and convex portions are provided on at least two, but fewer than all, of the magnetic poles of the rotor, and the zero point detection winding is provided on a plurality of electrical poles of the stator. Two or more zero point detection signals are generated simultaneously by a plurality of zero point detection windings. Therefore, even if a portion of the zero point detection signals is lost, the zero point can still be identified based on the correlation between the two or more zero point detection signals.
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Translation of the Detailed Description section of JP 2002168652 A obtained from Japanese Patent Office Website.
Translation of the Detailed Description section of JP 2000258187 A obtained from Japanese Patent Office Website.
Translation of the Detailed Description section of JP 2002054949 A obtained from Japanese Patent Office Website.
Kasahara Taro
Koyama Toshisada
Miya Taiichi
Adduci, Mastriani & Schaumberg, L.L.P.
Lefkowitz Edward
Minebea Co. Ltd.
Schindler David M.
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