Abstract: Dynamics Stability Control (DSC) improves the vehicle stability. The selection of the nominal values of the yaw rate
in the DSC control logic relates directly to the vehicle stability coefficient. In consideration of the characteristics of the vehicle
with high slip and high lateral acceleration for limit conditions of dynamics stability control, analyzing the stability coefficient is
needed to design the compositive stability coefficient as the key control parameter for the DSC controller. This paper contraposed
a certain style of passenger car, using both the ADAMS dynamic simulation and real car test methods to analyze the steering
characteristics with whole vehicle dynamic parameters to obtain the compositive stability coefficient. The limit condition of lane
change test verifies the validity of the coefficient.

Key words: vehicle dynamics, steering characteristics, stability coefficient, limit condition