Analysis of Influence of Steering System on Vehicle Straight Line

In Steer Release condition, due to the ability of actual vehicle to resist external small perturbations and self-Adaptive coordination can’t be described in the previous vehicle model, the stability of vehicle is described insufficiently. A fine steering system model was established, including Stick-slip friction model and a complete dynamic system consist of wheels, axles, steering tie rod and rack. When encountered with outside interference input, the left and right wheels have the ability to coordinate with each other and ensure the stability of vehicle. The validity of the model is verified through the simulation of typical operating conditions and the fidelity of vehicle model is improved.