ANGLE ERROR CORRECTION DEVICE FOR POSITION DETECTOR AND ANGLE ERROR CORRECTION METHOD

摘要

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 α (α 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/γ (γ 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.