US 12,428,005 B2
Architecture and method for steer-by-wire failure backup using direct yaw control actuators
SeyedAlireza Kasaiezadeh Mahabadi, Novi, MI (US); Hassan Askari, Thornhill (CA); Saurabh Kapoor, Windsor (CA); Reza Zarringhalam, Whitby (CA); Ehsan Asadi, Markham (CA); and Seyedeh Asal Nahidi, North York (CA)
Assigned to GM GLOBAL TECHNOLOGY OPERATIONS LLC, Detroit, MI (US)
Filed by GM Global Technology Operations LLC, Detroit, MI (US)
Filed on Sep. 18, 2023, as Appl. No. 18/468,979.
Prior Publication US 2025/0091593 A1, Mar. 20, 2025
Int. Cl. B60W 50/029 (2012.01)
CPC B60W 50/029 (2013.01) [B60W 2050/0297 (2013.01); B60W 2510/20 (2013.01); B60W 2520/26 (2013.01); B60W 2520/28 (2013.01); B60W 2720/28 (2013.01)] 20 Claims
OG exemplary drawing
 
1. A method for controlling a steer-by-wire system, comprising:
receiving vehicle data and a steering request from a vehicle;
determining whether a steering road wheel actuator of the vehicle has failed using the vehicle data;
in response to determining that the steering road wheel actuator of the vehicle has failed, determining a target wheel slip of the vehicle based on the steering request;
maintaining the target wheel slip of the vehicle while the vehicle is in motion, wherein maintaining the target wheel slip includes implementing a control strategy based on a driveline configuration of the vehicle, wherein the control strategy includes: brake torque vectoring for front-wheel drive; differential braking on front axle and brake torque vectoring on rear axle for rear-wheel drive; brake torque vectoring on front and rear axle for all-wheel drive; and torque vectoring on rear axle and brake torque vectoring on front axle for vehicles with two rear electric motors and one front electric motor; and
adjusting a wheel speed of at least one wheel of the vehicle based on a feedback signal, wherein the feedback signal is indicative of a road wheel angle while the vehicle is in motion.