Study of Modeling and Simulation on Driving Force Power Steering for Electric Vehicle with In-Wheel-Motor-Drive

Abstract

The most significant feature of EV with In-Wheel-Motor is that, the torque of each wheel can be controlled independently. [. When EVs turn, controlling torque of steering wheel independently can generate torque difference around the kingpin to reduce the driver's steering force and improve the steering Portability [. At first, the theory and structure of Driving Force Power Steering (DFPS) are discussed and a vehicle dynamic model is built with AMESim software. Based on the control strategy and algorithm a control model is built using Matlab/Simulink. At last, a simulation is performed. The results show that the DFPS system can provide steering power and assist steering efficiently.

Multilevel Evaluation Model of Electric Power Steering System Based on Improved Combination Weighting and Cloud Theory

“…The EPS is based on the traditional mechanical steering system; according to the torque signal on the steering wheel and the driving speed signal of the car, the electronic control device is used to make the motor generate auxiliary power with a corresponding magnitude and direction to assist the driver with steering [21]. Compared with the traditional hydraulic power steering system, the EPS has several advantages: it saves energy, aids in environmental protection, has convenient assembly, high efficiency, a good feeling on the road, and good reversion, and has excellent application and development prospects [22].…”