With the development of the modern automobile industry,the vehicle velocity has
being promoted continuously. So considering the influence of the aerodynamics on
vehicle has become more important in vehicle research and design. And the influence
on vehicle driving stability is one of the important influences. Computer aided simul-
ation on vehicle driving stability can provide designer much important date and useful
information. And with the research going on,simulation can be used on other aspects
of vehicle performance,will be an important means in vehicle design and research.
The important influence of nonlinear characteristics of tire on cornering
characteristics and driving stability of vehiclewas consideredat first. Thenonlinear
tire model (Magic Formula) was adopted, and the four wheels vehiclemodel with two
degrees of freedom and vehicle reference model were set up on this basis. The basic
principles of vehicle stability control were researched theoretically. Including the
influenceof slip characteristics of tire on vehicle stability,and the influenceof road
surface state, steer angle and vehicle on vehicle stability. And use the MATLAB for
simulation analysis of thesefactors.
Key words : Automobile Stability Simulation MATLAB