A Comparative Analysis of Linear and Nonlinear Semi-Active Suspension System

Abstract

The ride quality including comfort and safety is the primary factor that is targeted in the design of an effective suspension system. The parametric behavior of suspension system is non-linear but for simplicity most of the researchers have assumed it as linear. The emphasis of this study is to analyze the non-linear behavior of basic components of the suspension system. Anon-linear mathematical model for semi-active suspension system equipped with MR (Magnetorheological) damper is developed based on a two degrees of freedom quarter vehicle model. Matlab/Simulink is used for simulation of the proposed model for different types of road disturbances. Transient response characteristics of the proposed non-linear model is compared with linear semi-active suspension model which show the difference between the responses of these models.

The influence of degree of loading and load placing on steerability of vehicles

“…The latter are usually ordinary nonlinear differential equations. In [7][8][9][10], using their approximate analytical integration, a number of features of the dynamic process of a wheeled vehicle in comparison with linear models are shown. This primarily concerns the dependence of the frequency of natural oscillations on the amplitude and hence the influence of the latter on the ergonomic operating conditions of a wheeled vehicle, especially the transportation of goods.…”