| 摘要 |
A calculation processing circuit 10 executes a predetermined operation on the detection signals of a plurality of magnetic sensors A and B, disposed to face a target 3 a made of a magnetic material and provided on a rotating member 6 , for outputting detection signals with mutually different phases according to a rotation of the rotating member 6 , calculates the electrical angle of the detection signals based on a table 2 a representing the correlation of the result of the operation executed in advance with a corresponding electrical angle of detection signals, and detects the rotational angle of the rotating member 6 based on the calculated electrical angle. The calculation processing circuit 10 stores a plurality of tables 2 a through 2 c for different gaps between the target 3 a and the magnetic sensors A and B, determines the gap based on the detection signals of the magnetic sensors A and B, and calculates the electrical angle of the detection signals based on the table corresponding to the determined gap.
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