Research on Steer-by-Wire System in Electric Vehicle
Abstract: Steer-by-wire (SBW)
system in electric vehicle replaces the mechanical connection between steering
wheel and front wheels with cable in the traditional steering system, which
overcomes thelimitations of the traditional steering system for the drivers. It
is a hot research topic in the field of newenergy vehicles in the future. The
proposed new structure of SBW in electric vehicle is introduced; itsintegrated
control strategy consists of three modules. A coordinated control determines
the bodyforces/moment required to achieve electric vehicle motion objectives.
The body forces/moment areallocated to braking and steering subsystems based on
phase plane notion. The coordination of these actuators is achieved through the
controller of the feedback gains with respect to electric vehicle speed.The
gain scheduled steering controller provides the desired yaw rate damping while
keeping the yawlateral motion decoupled. The simulation test results show the
effectiveness of the proposed architecture and steering control system when the
SBW in electric vehicle is subject to critical driving situations. Our work
provided a reference for further research of SBW system.
Keywords: steer-by-wire
system, electric vehicle, steering control system, tests
Author: Zhang Yonghui
Journal Code: jptkomputergg170137
