Rotation angle sensor and calibration method of rotation angle sensor

A calibration method of a rotation angle sensor which outputs N periods (N>1) of a first signal of a first phase and a second signal of a second phase forming a predetermined phase angle with the first phase per single rotation of a rotating body, the calibration method comprising

• calculating, by a calibration parameter calculating part, in a mechanical angle of one angular range having a first mechanical angle different from a reference mechanical angle as its starting point, based on the first signal and the second signal, a calibration parameter which calibrates an error in a moving radius of the rotating body in the reference mechanical angle of the rotating body.

A calibration method of a rotation angle sensor which outputs N periods (N>1) of a first signal of a first phase and a second signal of a second phase forming a predetermined phase angle with the first phase per single rotation of a rotating body, the calibration method comprising

• calculating, by a calibration parameter calculating part, in a mechanical angle of one angular range having a first mechanical angle different from a reference mechanical angle as its starting point, based on the first signal and the second signal, a calibration parameter which calibrates at least one of an error based on the first signal and an error based on the second signal in the reference mechanical angle of the rotating body.