Patent ID: 6349789
Filing Date: 2002-02-26
Classification: B60T,B62D

Abstract:
A steering device for a vehicle wherein the vehicle includes vehicle wheels and a controller for stabilization of vehicle behavior by control of wheel forces applied by one of braking and driving forces, the steering device comprising:a steering shaft for transmitting driver applied steering torque for steering applied by a driver to the vehicle wheels; an actuator for generating steering assistance torque added to the steering torque applied by the driver; means for detecting steering torque transmitted by the steering shaft; means for determining variables corresponding to change in the wheel forces due to the control for the stabilization; means for storing a relationship between the variables and change in the steering torque due to the control of the wheel forces by the control for stabilization; and means for controlling the steering assistance torque added by the actuator so as to cancel out the change in the steering torque due to the wheel forces controlled by the control for stabilization determined from the variables determined and the relationship stored; wherein, when the wheel force is controlled by the controller for stabilization so that a moment acts on the vehicle for the stabilization, the steering assistance torque added by the actuator has the same direction as that of the moment such that the steering torque can be controlled so as to cancel out the change in the steering torque due to the control for the stabilization.