Driver assistance system for a steering arrangement, vehicle and method for operating such a driver assistance system

Abstract

The invention relates to a driver assistance system for a steering arrangement (100) with a mechanical separation between a tie rod (108) belonging to the steering arrangement (100) and a steering handle (102) belonging to the steering arrangement (100), with a steering aid device (106) associated with the tie rod (108) which includes an actuator (118) for setting different steering angles for the alignment of a wheel (122), with a sensor (116) associated with the steering handle (102) for detecting a position and / or angular position and / or a lateral force of the steering handle (102), and with a steering control unit (110) in which a steering control function (124) for determining an optimized assistance trajectory is implemented, wherein the steering control function (124) is formed by a predictive, time-variant model which uses a driver-determined lateral force rate and an automated lateral force rate as linear or linearized input variables.to define an optimization problem for optimizing the automated lateral force rate, wherein the steering control function (124) uses a non-linear inverted tire model to solve the optimization problem and thus output an optimized automated lateral force rate, wherein the steering control function (124) determines an optimized steering angle rate from the optimized automated lateral force rate in order to obtain the optimized assistance trajectory, and wherein the steering control unit (110) is configured to specify the optimized assistance trajectory to the steering assistance device (106). The invention also relates to a vehicle and a corresponding method.

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