Simulation and Exploration of Electrical Vehicle Steering Flexibility based on CarSim
The conventional electronic power steering system uses a rack and pinion steering to pull the wheel to achieve steering,which limits the wheel angle to achieve Ackermann steering and limits the max-imum steering angle of the wheel.In this paper,the steering subsystem of CarSim is modified by Simulink on the basis of Carsim's own model,so as to establish a vehicle model which can realize independent steering of front wheels.The correctness of the model is verified by double shift simulation test and steer-ing wheel angle step response test.Through open-loop control and closed-loop control experiments,it is proved that this model has better steering flexibility than the traditional automobile model.This study can pave the way for the later research on the flexibility and steerability of steering-by-wire vehicles,and is also of great significance to prolong the life of automobile tires and improve driving experience.
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