Road vehicle with steer-by-wire system has fall-back level that uses ESP to produce steering movement according to steering element position, brake vehicle to rest if implausibility exists between steering element sensor, yaw rate sensor

摘要

The vehicle is engine powered and steerable by a steer-by-wire system with a manually operated steering element with a steering position sensor (SAS) and a steer-by-wire element that interacts with steerable wheels, an electronic stability program (ESP) that can be brought into interaction with the brakes and a yaw rate sensor (YRS). If an implausibility exists between the steering element sensor and the yaw rate sensor a fall-back level is activated that uses the ESP function to produce a steering movement according to the steering position of the steering element and to brake the vehicle to a halt.