Patent ID: 6958602

Claim:
A high-accuracy, 1X VR resolver comprising: a first rotor portion having (N−1) salient poles provided about a center axis at uniform angular intervals, where N is an arbitrary integer not less than 3; a second rotor portion having N salient poles provided about the center axis at uniform angular intervals, the first rotor portion and the second rotor portion being disposed on a rotary shaft and axially connected together; a first stator portion having a plurality of magnetic poles which are provided to face the first rotor portion and on which an input coil and an output coil for a shaft angle multiplier of (N−1)X are provided; and a second stator portion having a plurality of magnetic poles which are provided to face the second rotor portion and on which an input coil and an output coil for a shaft angle multiplier of NX are provided, wherein the first rotor portion and the first stator portion constitute a first resolver unit; the second rotor portion and the second stator portion constitute a second resolver unit; one of the first and second resolver units is disposed in a front stage, and the other of the first and second resolver units is disposed in a rear stage; and the output coil of the stator portion in the front stage is connected to the input coil of the stator portion in the rear stage in such a manner that the output coil of the stator portion in the rear stage outputs an output signal for a shaft angle multiplier of 1X.