| 摘要 |
PURPOSE:To improve stability of a vehicle running in a bad road zone by changing corrective quantity which is made by a bad road correction means, in the direction for reducing the drive torque when the wheel steering angle and the yaw rate deviation is more than a specified value at the time of operating the steering characteristic control means. CONSTITUTION:Upon finding the yaw rate from the acceleration of the front and rear body, whose steering characteristics of the front wheel steering device 102 of a vehicle are respectively detected by lateral acceleration sensors 134a, 134b, and calculating the deviation of the actual yaw rate from the target yaw rate as a yaw rate deviation, a steering characteristic control means is operated. When the steering angles of wheels 2FL, 2FR are deviated from the yaw rate by more than the specified value at the time of operating the steering characteristic control means, the corrective quantity made by a bad road corrective means is changed in the direction for reducing the drive torque. Thus directional stability of a vehicle can be improved even when it runs in a bad road zone. |
