Patent ID: 7957867

Claim:
A steering apparatus for a vehicle which includes a steering input shaft integrally connected to a steering wheel rotated by a driver, a steering output shaft connected to a steering mechanism for steering steerable wheels, and an electric actuator for changing the amount of rotation of the steering output shaft with respect to the amount of rotation of the steering input shaft, the steering apparatus comprising: side-slip-angle detection means for detecting a side slip angle of a vehicle body generated when the vehicle is in a turning state; target-rotation-amount calculation means for calculating a target rotation amount of the steering output shaft based on a correction term determined in accordance with the side slip angle of the vehicle body detected by the side-slip-angle detection means so as to reduce an influence, on the turning state of the vehicle, of a lateral force generated in the vehicle due to the side slip angle of the vehicle body; adjustment value input means which is operated to enter an adjustment value representing a degree to which the influence of the lateral force on the turning state of the vehicle is reduced; and drive control means for controlling drive of the electric actuator on the basis of the target rotation amount calculated by the target-rotation-amount calculation means, wherein the correction term is calculated by multiplying together the adjustment value from the adjustment value input means and the detected side slip angle of the vehicle body.