The Application of Sensitivity Method in Vehicle Dynamics Analysis

Aimed at the effect of variable coefficients and the constant coefficients to the system, a quarter-car two degree freedom suspension vibration model is described, with the aid of matlab alternating senior programmable language, the algorithm is gained through function file, the simulation model of the road noise and the suspension system is obtained. Moreover, The one order standard sensitivity function is adopted, the actual model of one quarter-car two degree freedom suspension system is designed, and the standard sensitivity response of vehicle body velocity, body displacement and the tire displacement is analyzed, the sensitive degree of the change of the structure dynamic characteristics variation is studied. The results indicate that the method can improve the design efficiency and reduce the cost of the design.