基于Carsim的线控转向系统路感模拟研究

Steering-By-wire System（referred to SBW) is a new steering system after the electric power steering system, the abolition of mechanical connection between the steering wheel and the steering wheel, has become a research hotspot in today's automotive sector world. In this paper, CarSim software to build the vehicle model, and then, based on two degrees of freedom vehicle dynamics model design with variable gear ratio control strategy. In order to study the real sense of the way, but also analyze the mechanism of generating mechanical road feel and built in Simulink Control Strategy SBW road feel. Finally, gathering speed, the tire load and the steering wheel angle and other signals, the United CarSim and Simulink software, simulation simulate different conditions generated by the motor road feel of the steering wheel back to the positive moment. Since the control model to simulate the mechanical road feel and an ideal way driver needs significant differences do exist between the sense, this paper set up a road feel modification strategies, give the driver to provide a more "light" and "real" and steering wheel feedback force.