Angle error correction device for position detector and angle error correction method

Provided are: an angle error correction device that is for a position detector and that makes it possible to accurately estimate and correct an angle error; and an angle error correction method. A position detector detects the rotational position of an electric motor and includes a periodic error determined uniquely in accordance with the rotational position. An angle error correction unit multiplies the rotational position of the electric motor detected by the position detector by Alpha (Alpha is an integer of 2 or more), then corrects an angle error using an estimated angle error value or uses a value that is the result of multiplying the estimated angle error value by 1/Gamma (Gamma is a positive number) in order to correct the angle error with respect to the rotational position of the electric motor detected by the position detector. 获得能够准确地估计角度误差进行校正的位置检测器的角度误差校正装置以及角度误差校正方法。位置检测器对电动机的旋转位置进行检测，含有根据旋转位置而唯确定的周期性误差，角度误差校正部使由位置检测器检测出的电动机的旋转位置成为α倍(α为2以上的整数)之后，使用角度误差估计值对角度误差进行校正，或者，针对由位置检测器检测出的电动机的旋转位置，使用使角度误差