Abstract
Today, vehicle belongs to the third generation with various mechatronics structures to enhance dynamics safety. Vehicle becomes a partial or integrated object of control. Hence, an integrated dynamics model for control needs to be modeled. Besides it, such integrated model can be used for examining skid processes of vehicles, especially in the case when road is of low-adhesion and unequal coefficients. Under the social stress and world trading concurrent, the effect of vehicle dynamics must be investigated exactly in order to improve the ride comfort, to decrease the unsteadiness of the dynamical tyre forces. Good dynamical quality of vehicle is important to reduce deriving stress, prevent cargo damage. A good dynamical contact of tyre and road surface guarantied stabilital moving of vehicle and reduce traffic accidents on road. When modeling, the authors used the method of separating structures of integrated model, suspension system model, tyre mode. The integrated dynamics modell is combineted by 3 submodelles of lateral, longitudinal and vertical dynamics. This idea conforms with modulization of Matlab, which permits intervention and change in parameters within individual modules. In the model, there are many physical and geometrical nonlinear elements, which are described by various mathematical functions. Tyre model used in the paper is the Ammon model [11]. In the paper, there are some presented results of skid limit and handing, which are suitable to the real processes that form basis for the follow-on researches.
Keywords: Integrated dynamics model, suspension system model, tyre model, mechatronics, dynamics safety, limit brake, under-limit brake, ride comfort, human comfort, road wear factors, dynamical tyre force, cargo damage.