| 摘要 |
PURPOSE:To provide compatibility between directional stability and acceleration of a vehicle by giving weight to a wheel steering angle and a yaw rate deviation at the time of operation of a steering characteristic control means and correcting the deviation so that heavier the driving zone given weight is, smaller the target slip quantity may be. 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. Steering angle of wheels 2FL, 2FR and the yaw rate deviation are given weight at the time of operating the steering characteristic control means and correction is made so that heavier the given weight of drive zone is, smaller the target slip quantity may be. Thus directional stability can be obtained in a heavy drive zone and acceleration can be obtained in a drive zone where given weight is not heavy. |
