The Relationship between the Caster Angle and the Steering Stability and the Measurement Method

Abstract

The size of the front wheel caster angle of the vehicle is closely related to the stability of high-speed steering. By establishing the vehicle two-degree-of-freedom model and the steering system force input dynamic equation, the relationship calculation formula between the front wheel caster angle and the steering stable limit speed is derived by using the Routh-Hurwitz stability criterion. Taking the specific data of a certain model as an example, the range of speed values that can maintain stability is analyzed. The accuracy of the model will be further verified by means of simulation. This paper also summarizes the relevant model analysis and calibration techniques for the measurement of the back inclination of the main sales of automobiles, and can obtain more accurate experimental data by improving the accuracy of the measurement. Thus providing a guiding basis for the design of the rear inclination angle of the main sales of the car.