Analysis and simulation of four-wheel independent steering control for electric vehicles

Due to the growing environmental pollution, methods are being sought to improve this situation. One of the main factors influencing this pollution is passenger vehicles. This paper will analyze a new approach to vehicles with in-wheel electric motors as well as the steering of all four wheels, which will increase the efficiency of the vehicles and at the same time the driving safety. Driving operation modes of vehicles as well as applications of 4-wheel steering (4WS) with steer-by-wire (SBW) system shall be analyzed. Specially, the steering geometry and the vehicle dynamics equations of this vehicle type will be reported. Finally, the proposed 4WS SBW control system will be presented and simulated with New European Driving cycle (NEDC).