| 摘要 |
PURPOSE:To prevent the spinning of a car by setting the steering angle of a rear wheel by a rear-wheel steering apparatus to the smaller value than that in ordinary case, when the abnormal state where rear wheels flow or the rear wheels tend to flow on brake application on a rainy road, etc. CONSTITUTION:When a car travels, each output theta, G of a front-wheel steering angle sensor 21 and a lateral acceleration speed sensor 22 is read in a controller 23, and the abnormal state of the flow of rear wheels 1 is judged from each direction of theta and G. In other words, when each direction of theta and G is same, it is judged as abnormal state. When the judgement is abnormal state, the rear-wheel steering angle beta is set to the smaller value than that in the normal case. The rear-wheel steering angle beta [=f(V)] corresponding to each time is obtained on the basis of the output V of the car-speed sensor 22, and an electromagnetic flow-rate adjusting valve 14 is driven through a driving circuit 25 by the output of the rear-wheel steering angle beta, and the rear wheel 1 is steered so as to form the rear-wheel steering angle in the same direction to that of the front wheel. |
