| 摘要 |
PURPOSE:To prevent generation of swing back in the yaw direction at returning to a straight running condition, when a steering wheel is in turning back condition at over prescribed vehicle speed and steering speed of the turning back is over a prescribed value, by correcting the steering angle of rear wheels on the turning back direction side. CONSTITUTION:The detected signal of a lateral G-sensor 46, the detected signal of a vehicle speed sensor 47, and the detected signal of a steering angular speed sensor 49 to detect the steering angular speed of a steering wheel 1, are inputted to a controller 45 with which controls operation of a control valve 17 for steering rear wheels, namely controls feed current to right and left solenoids 24,23. The level of a necessary controlling quantity at turning back is estimated from the vehicle speed and the steering angular speed at further turning of the steering wheel 1, and when it is detected that the steering angular speed at turning back is over the reference value corresponding to the vehicle speed and the rate of change of lateral G is over a set value, the estimated controlling quantity of rear wheel correcting steering in the reverse phase direction against the front wheel is controlled to be executed. |
