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AssigneeNidec Copal Corporation
InventorsKiyoyasu SAITO, Tomohisa TOKUNAGA
Estimating the term…
A rotation angle detector is smaller and less expensive and has higher detection accuracy. A rotation angle detector for detecting a rotation angle of a rotator including at least two pole pairs arranged in a ring includes an electrical angle calculator that calculates an electrical angle of the rotator, a pole pair number setter that sets a pole pair number for each of the at least two pole pairs in the rotator, an origin pole pair detector that detects, based on magnitudes of magnetic fluxes of the at least two pole pairs, an origin pole pair as an origin and sets an origin pole pair number to the origin pole pair, and an absolute mechanical-angle calculator that calculates an absolute mechanical angle of the rotator based on the electrical angle, the pole pair number, and the origin pole pair number.
A rotation angle detector for detecting a rotation angle of a rotator, the rotator including at least two pole pairs arranged in a ring, the rotation angle detector comprising:
A rotation angle detection method to be used by a rotation angle detector for detecting a rotation angle of a rotator, the rotator including at least two pole pairs arranged in a ring, the rotation angle detection method comprising:
A program executable by a computer included in a rotation angle detector for detecting a rotation angle of a rotator, the rotator including at least two pole pairs arranged in a ring, the program being a program for causing the computer to perform operations comprising:
Dependencies are inferred from the claim text.