Patent ID: 6381525
Filing Date: 2002-04-30
Classification: B62D

Abstract:
An electric power steering apparatus comprising:a steering torque detecting means for detecting a steering torque to be applied to a steering system of a vehicle; a vehicle velocity detecting means for detecting a vehicle velocity of the vehicle; a curvature radius calculation means for calculating a radius of curvature of a road along which the vehicle travels; a torque reference value storage means for storing a torque reference value or the steering torque; a torque compensation means for compensating the torque reference value of the steering torque on the basis of the steering torque detected by said steering torque detecting means in response to the vehicle velocity detected by said vehicle velocity detecting means and a radius of curvature detected by said curvature radius calculation means; a compensation controlling means for calculating an inferential steering torque on the basis of the torque reference value obtained by said torque compensation means and the steering torque detected by said steering torque detecting means; and a target current setting means for setting a target current on the basis of the vehicle velocity detected by said vehicle velocity detecting means and the inferential steering torque.