公开(公告)号：US20240383532A1

公开(公告)日：2024-11-21

申请号：US18319980

申请日：2023-05-18

Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC

Inventor： Ibrahim A. BADIRU ,  Gabriel de Paula EDUARDO

IPC: B62D15/02 ,  B62D6/00

Abstract: A steer-by-wire system of a vehicle is disclosed. The steer-by-wire system includes: sensors configured to detect parameters including at least one of a steering rack load on a steering rack of the vehicle and a speed of the vehicle; and a control module configured to operate in a synthetic chassis understeer mode including i) determining a change in road wheel angle based on the parameters, and ii) based on the change in the road wheel angle, controlling a motor to adjust a position of the steering rack to at least one of introduce and increase understeer.

公开(公告)号：US20220250673A1

公开(公告)日：2022-08-11

申请号：US17171005

申请日：2021-02-09

Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC

Inventor： Wen-Chiao LIN ,  Ibrahim A. BADIRU ,  Alexander M. ALLAN ,  Bo YU ,  Qi ZHANG ,  Christopher C. AU

IPC: B62D5/04 ,  B62D3/12

Abstract: A system comprises a processor and a memory storing instructions which when executed by the processor configure the processor to estimate a rack force for a steering system of a vehicle based on current driving and environmental conditions and estimate a health of an actuator of the steering system of the vehicle. The instructions configure the processor to estimate maximum achievable angle, velocity, and acceleration for the actuator of the steering system based on the estimated rack force and the estimated health of the actuator. The instructions configure the processor to provide to the steering system a path planned for the vehicle based on the estimated maximum achievable angle, velocity, and acceleration for the actuator of the steering system.