Abstract
When a vehicle is accelerated on low-friction roads, the turning radius tends to increase because of lack of the lateral force provided by the road. This leads to the vehicle's deviating outwardly from the desired course. In this paper, a new method of improving the turning capability is proposed. The slip ratio that corresponds to the maximum lateral force is determined by fuzzy logic from the information of vehicle velocity and steering angle. This target slip ratio is constantly updated during the turn. Then, a digital PI controller computes the throttle angle that is required to implement this target slip ratio. Various simulations show that the proposed approach can improve the turning capability and stability of the vehicle.
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