| 摘要 |
A first rotation angle computing unit 21 computes a first rotation angle ¸ 1 corresponding to a rotation angle of a rotor 1 based on an output signal V1 of a first magnetic sensor 11 and an output signal V2 of a second magnetic sensor 12. A second rotation angle computing unit 22 computes a second rotation angle ¸ 2 corresponding to the rotation angle of the rotor 1 based on the output signal V2 of the second magnetic sensor 12 and an output signal V3 of a third magnetic sensor 13. A rotation angle selection unit 23 determines a final rotation angle ¸ using the first rotation angle ¸ 1 and the second rotation angle ¸ 2 . |
