| 摘要 |
PROBLEM TO BE SOLVED: To provide a vehicular steering control device capable of stabilizing a vehicular behavior during steering irrespective of a difference in actuator followup performance caused by forward-backward efficiency. SOLUTION: The vehicular steering control device comprises a steering angle ratio variable actuator capable of changing a steering angle ratio for indicating the relationship between the steering angle of a steering wheel and the turning angle of a steering control wheel, a power assist actuator for giving assist torque to the steering torque of the steering wheel, a steering angle ratio variable control means for setting a steering angle ratio command value so as to obtain a desired steering angle ratio and controlling a steering angle ratio variable actuator, a steering torque control means for setting the assist torque command value so as to obtain the desired steering torque according to a steering state, and controlling the power assist actuator, and an assist torque command value correction means for correcting the assist torque command value based on the relationship between the direction of the steering torque and the rotational direction of the steering angle ratio variable actuator. COPYRIGHT: (C)2008,JPO&INPIT |
