| 摘要 |
PURPOSE:To improve driving stability at the time of cornering by reducing the steering angle ratio of rear wheels changing to an oversteering tendency at the time of carrying out torque split control or driving slip control by means of an ASR device while steeringly traveling. CONSTITUTION:The torque split of right and left and front and rear wheels is controlled by an unshown exclusive controller unit based on the operating condition of a vehicle. On the other hand, the detected signal of each of wheel speed sensors 71LS, 71RS, 81LS, 81RS is inputted into a driving slip controlling controller unit 200 while the control signal of this unit 200 is inputted into a 4-WS controller unit 300. The control signal of this unit 300 is inputted into a four-wheel steering actuator 74 to steer rear wheels 71R, 71L. In this case, at the time of carrying out torque split control or driving slip control while steeringly traveling, the steering angle ratio of rear wheels is reduced changing to an oversteering tendency. |
