Technical Paper
Road Feel Modeling and Return Control Strategy for Steer-by-Wire Systems
2024-04-09
2024-01-2316
Steer-by-wire (SBW) system as the core component of the drive-by-wire chassis controlling the lateral motion of the vehicle is important for vehicle safety. Road feel modeling and return control of SBW system is a challenge due to the fact that steer-by-wire steering eliminates the mechanical connection between the steering wheel and the turning wheel, which renders the return torque unable to be directly transmitted to the steering wheel. In order to provide the driver with the necessary road feel and precise control of steering wheel return, this paper proposes a road feel modeling algorithm based on the dynamics model and a return control strategy based on the backstepping control method. First, the dynamics model of the SBW system is established.