US 12,330,724 B2
Steer-by-wire steering system for a motor vehicle
Peter Kakas, Budapest (HU); and Imre Szepessy, Mauren (LI)
Assigned to thyssenkrupp Presta AG, Eschen (LI); and thyssenkrupp AG, Essen (DE)
Appl. No. 17/924,762
Filed by thyssenkrupp Presta AG, Eschen (LI); and thyssenkrupp AG, Essen (DE)
PCT Filed May 11, 2021, PCT No. PCT/EP2021/062397
§ 371(c)(1), (2) Date Nov. 11, 2022,
PCT Pub. No. WO2021/228799, PCT Pub. Date Nov. 18, 2021.
Claims priority of application No. 10 2020 205 904.7 (DE), filed on May 12, 2020.
Prior Publication US 2023/0192186 A1, Jun. 22, 2023
Int. Cl. B62D 6/00 (2006.01); B62D 5/04 (2006.01)
CPC B62D 6/008 (2013.01) [B62D 5/0409 (2013.01); B62D 5/046 (2013.01)] 14 Claims
OG exemplary drawing
 
1. A steer-by-wire steering system for a motor vehicle, comprising:
a steering spindle that is rotatably supported;
a feedback actuator with a feedback motor for acting on the steering spindle;
a steering actuator with a steering motor for acting on steered wheels of the motor vehicle based on rotation of the steering spindle; and
control units for controlling the feedback motor and the steering motor, wherein a first control unit and a second control unit of the control units have different levels of complexity;
wherein the first control unit is configured to receive first sensor signals, to process the first sensor signals, and to determine a first motor control signal from the first sensor signals that have been processed, wherein the second control unit is configured to receive second sensor signals, to process the second sensor signals, and to forward the second sensor signals that have been processed to the first control unit, wherein the first control unit is configured to receive the second sensor signals that have been processed and to determine a second motor control signal from the second sensor signals that have been processed wherein the control units are configured to control the feedback and steering motors based on the motor control signals.