Collision avoidance with combined braking and steering

Among various driver assistance systems with environmental sensors the first emergency braking systems are available. To avoid collisions with a vehicle driving in front of the own vehicle also an evasive maneuver is possible to avoid the collision. Particularly at higher velocities this maneuver is characterized by a later intervention time. To allow a still later intervention, a combination of steering and braking is possible. If the evasive maneuver and the braking maneuver are combined, it is possible to further reduce the evasive length. In this contribution two control strategies will be presented for a combined intervention. Both methods have the goal to make use of the friction potential of the tires as much as possible. The first control strategy uses the accelerations which occur during the maneuver, the second control is a tire-individual slip-control. Thus it is possible to significantly reduce the evasive length in the speed range between 70 and 160 km/h compared to the classical evasive maneuver, which will be shown with simulation. With such a system, collisions can be prevented to an even later stage.