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

摘要

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.