US 11,926,380 B2
Method for determining a steering sensation of a steer-by-wire steering system
Leonard Lapis, Sennwald (CH); and Manuel Rohrmoser, Thüringen (AT)
Assigned to thyssenkrupp Presta AG, Eschen (LI); and thyssenkrupp AG, Essen (DE)
Appl. No. 17/299,596
Filed by thyssenkrupp Presta AG, Eschen (LI); and thyssenkrupp AG, Essen (DE)
PCT Filed Dec. 17, 2019, PCT No. PCT/EP2019/085648
§ 371(c)(1), (2) Date Jun. 3, 2021,
PCT Pub. No. WO2020/127265, PCT Pub. Date Jun. 25, 2020.
Claims priority of application No. 10 2018 132 865.6 (DE), filed on Dec. 19, 2018.
Prior Publication US 2022/0097759 A1, Mar. 31, 2022
Int. Cl. B62D 6/00 (2006.01)
CPC B62D 6/008 (2013.01) 7 Claims
OG exemplary drawing
 
1. A method for controlling a steer-by-wire steering system for a motor vehicle that includes an electronically controllable steering actuator that acts on steered wheels, a control unit, a feedback actuator to which a driver request for a steering angle can be applied by a driver via a steering input means and which outputs a feedback signal to the steering input means as a reaction to the driver request and to a driving condition of the motor vehicle, and a signal transmission that transmits the driver request to the control unit, wherein the control unit controls the electronically controllable steering actuator to convert the driver request into a deflection of the steered wheels, the method comprising:
determining a wheel slip of a front wheel of the steered wheels;
performing frequency analysis of a profile over time of a wheel slip signal of the front wheel, wherein performing the frequency analysis comprises classifying dominant frequencies via predefined frequency values, and allocating a predefined feedback signal to the dominant frequencies based on the classification; and
determining the feedback signal based on a result of the frequency analysis.