APPARATUS FOR CORRECTING RESOLVER OFFSET OF ELECTRIC VEHICLE AND METHOD THEREOF

摘要

According to the present invention, a device for correcting resolver offset of an electric vehicle and a method thereof relate to a technology for diagnosing and correcting a resolver while a vehicle is stopped. The method comprises the following steps of: determining resolver offset diagnosis and initial correction conditions of an electric vehicle; limiting motion of the vehicle; separating a mechanical power transfer route of an electric motor; and performing resolver offset diagnosis and correction in accordance with a rotation number and a wheel speed of the motor per second. The device for correcting resolver offset of an electric vehicle comprises: the electric motor for generating mechanical power; a power transfer unit which separates the mechanical power from a wheel of the vehicle; a resolver for measuring a driving speed of the electric motor and an angle of a rotor; and a control unit which performs resolver offset diagnosis and correction.