Thyssen Krupp Ag

Thyssenkrupp Presta Ag

Daniel Vizer

Àdám Varga

A method for controlling a steer-by-wire steering system for a motor vehicle may involve determining a torque request signal with a position controller of an activation unit based at least on a desired steering angle and an actual steering angle, limiting the torque request signal in a signal limiting device of the activation unit such that the torque requested by the limited torque request signal is limited to a permissible torque range, and transmitting the limited torque request signal to an electronically controllable steering actuator. The signal limiting device may determine a reference torque signal by way of a reference controller based at least on the desired steering angle and the actual steering angle. The signal limiting device may define the permissible torque range by way of a selectable maximum deviation from the reference torque signal.

Method for controlling a steer-by-wire steering system and steer-by-wire steering system for a motor vehicle

A method for controlling a steer-by-wire steering system for motor vehicles includes a steering actuator that acts on the steered wheels and is electronically controlled in accordance with a steering request. A feedback actuator transmits reactions of the road to a steering wheel. A control unit controls the feedback actuator. The method includes determining a basic motor torque; providing at least one steering function which is part of a first subgroup of steering functions; limiting the output value of the at least one steering function to reach a predefined safety level in a first limiter; adapting the basic motor torque by means of the limited output value of the at least one steering function in a summing element; and actuating the feedback actuator with the resulting motor torque which is output by the summing element.

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Csabdi, Hungary

Daniel Vizer