Patent ID: 6134491
Filing Date: 2000-10-17
Classification: B60T,B62D

Abstract:
A system for controlling steering of a vehicle, including:steering means having an actuator which steers driven wheels of the vehicle;first steering control means for controlling the actuator;first detecting mean for detecting a condition of a lane on a road on which the vehicle travels;second detecting means for detecting motion of the vehicle;steering assist torque determining means for determining a steering assist torque necessary for holding a positional relationship between the vehicle and the lane condition;torque detecting means for detecting a steering torque manually applied to the steering means by the driver;second steering control means for calculating a torque command to be output to the first steering control means based on the steering assist torque calculated by the steering assist torque calculating means and the detected steering torque to control the actuator such that the torque command decreases;failure detecting means for detecting whether a failure has occurred at least in determination of the steering assist torque; andcontrol discontinuing means for discontinuing the control by the second control means when the failure is detected.