Ke, G., Weiqiang, Z., and Han, X., "Research on Self-adaptive Adjustment of Steering Characteristic for Commercial Vehicle," SAE Technical Paper 2017-01-7006, 2017.
As the main passenger and freight transport equipment,commercial vehicle’s safety and comfort has become particularly important.Due to the long traveled distance,commercial vehicle is equipped with more than one driver.Different drivers have their unique steering behavior and same driver have a large physical power change when driving for a long time.Therefore,the needs of drivers cannot be met by a single model of the steering characteristics.If the vehicle steering characteristics are not suitable for the drivers,the vehicle will always produce too much/ little of the steering angle when driver controls steering system.The steering angle need to be adjusted again by driver when this happens.The occurrence of such a situation will affect the road safety, and cause extra burden on driver. On the basis of the traditional hydraulic power, dynamic steering system adds an electric servo motor to the steering column. The steering characteristics can be adjusted by this system.In this paper,with the help of the dynamic steering system of commercial vehicle,the adaptive adjustment of steering characteristics is carried out.Through the establishment of two degree of freedom dynamic model estimates whether the vehicle is in a stable state.The driver’s manipulative behavior will be analyzed when the vehicle is in stable state.Additional power value was calculated by the angle adjustment value of the second operation from driver.In order to evaluate the performance of proposed method,the Co-Simulation analysis was carried out in virture of MATLAB/Simulink、AMESim and TruckSim software. The simulation results demonstrate that the proposed method in this paper can adjust steering characteristics.With this method,driver’s demand of the different characteristics can be satisfied.