Patent ID: 9290200
Filing Date: 2016-03-22
CPC Classification: B62D

Claim Text:
1. A vehicle power steering system comprising an assist torque computing unit configured to: i) set a first assist torque component based on a steering torque applied to a steering mechanism during a steering operation of a vehicle; ii) compute a target steered angle of steered wheels of the vehicle based on the steering torque; iii) set a second assist torque component to be applied to the steering mechanism to maintain an actual steered angle of the steered wheels at the target steered angle; iv) set an assist torque corresponding to the first assist torque component and the second assist torque component; v) set an ideal steered angle based on a travelling state of the vehicle; vi) compute a correction value based on a deviation between the ideal steered angle and the actual steered angle; and vii) correct the target steered angle based on the correction value, the vehicle power steering system assisting the steering operation by applying the assist torque from an electric motor to the steering mechanism.