US 12,280,838 B2
Motor vehicle power steering system
Kristof Polmans, Tarrenz (AT); and Imre Szepessy, Mauren (LI)
Assigned to thyssenkrupp Presta AG, Eschen (LI); and thyssenkrupp AG, Essen (DE)
Appl. No. 17/637,055
Filed by thyssenkrupp Presta AG, Eschen (LI); and thyssenkrupp AG, Essen (DE)
PCT Filed Aug. 20, 2020, PCT No. PCT/EP2020/073338
§ 371(c)(1), (2) Date Feb. 21, 2022,
PCT Pub. No. WO2021/032839, PCT Pub. Date Feb. 25, 2021.
Claims priority of application No. 10 2019 212 618.9 (DE), filed on Aug. 22, 2019.
Prior Publication US 2022/0297747 A1, Sep. 22, 2022
Int. Cl. B62D 5/04 (2006.01); B62D 1/04 (2006.01); B62D 5/00 (2006.01)
CPC B62D 5/0481 (2013.01) [B62D 5/0421 (2013.01); B62D 1/04 (2013.01); B62D 5/001 (2013.01)] 16 Claims
OG exemplary drawing
 
1. A motor vehicle power steering system comprising:
a steering handle having a handle sensor for detecting a handle position of the steering handle;
an electronically controlled steering actuator having an electric motor for providing an actuating torque based on the handle position that is detected;
a mechanical power transmission for transmitting the actuating torque to steered wheels;
a position sensor for detecting a wheel position of the steered wheels; and
a monitoring device that is configured to relate the wheel position detected by the position sensor to an input parameter of the mechanical power transmission given by the electric motor to monitor functioning of the mechanical power transmission;
wherein the electric motor is equipped with a rotor position sensor that is connected to the monitoring device to detect a rotor position of the electric motor as the input parameter of the mechanical power transmission given by the electric motor;
wherein the monitoring device is configured to monitor a stiffness of the mechanical power transmission.