Driving Performance Analysis of a Rear In-wheel Motor Vehicle with Simultaneous Control of Driving Torque and Semi-active Suspension System

Abstract : Recently, the in-wheel motor vehicle is rapidly developed to solve energy exhaustion and environmental problems. Especially, it has the advantage of independently driving the torque control of each wheel in the vehicle. However, due to the weight increase of wheel, the comfort of vehicle riding and performance of road holding become worse. In this paper, to compensate the poor performance, a simultaneous control of the driving torque and semi-active suspension system is investigated. A vehicle model is generated using CarSim Software and validated by field tests. Co-simulation of CarSim and MATLAB/Simulink with control logics is carried out, and it is found that simultaneous control of the driving torque and semi-active suspension system can improve driving stability and durability of the in-wheel motor system. Key words : Electric vehicle(전기자동차), In-wheel motor(인휠 모터), Vehicle dynamics(차량동역학), Driving torque control(구동 제어), Semi-active suspension system(반능동 현가시스템), Simultaneous control( 동시제어)