Patent ID: 7337873
Filing Date: 2008-03-04
Classification: B60T,B60W,B62D

Abstract:
1. A steering control apparatus for a vehicle, comprising: steering control means for controlling a steered wheel angle of a wheel to be steered in response to steering operation of a vehicle driver; braking force estimation means for estimating a braking force applied to at least a pair of right and left wheels of said vehicle, respectively; coefficient of friction estimation means for estimating a coefficient of friction of road surface, on which each of said right and left wheels is placed; braking force difference calculation means for calculating a braking force difference between the braking force applied to said right wheel and the braking force applied to said left wheel, on the basis of the braking force estimated by said braking force estimation means; slip angle—total lateral force characteristic setting means for setting a relationship between a slip angle of said wheel to be steered, and a total lateral force of said wheel to be steered, on the basis of the coefficient of friction estimated by said coefficient of friction estimation means; and steered wheel angle setting means for setting the steered wheel angle of said wheel to be steered, on the basis of the braking force difference between said right and left wheels calculated by said calculation means, and the relationship between the slip angle of said wheel to be steered and the total lateral force of said wheel to be steered, said relationship being set by said characteristic setting means.