Abstract
With the base of three-dimensional CAD digital model of suspension and steering system and driver preview optimal curvature model, driver-vehicle-road closed-loop system (DVRCLS), based on ADAMS and MATLAB software, is established and the simulation of vehicle handling and stability made.
First, with the base of three-dimensional CAD digital model of suspension and steering system and the theory of multi-body system dynamics, a vehicle dynamics simulation model with many degrees of freedom, which can be used in vehicle handling and stability and aims at some homemade kind of sedan, is established in ADAMS. With this model, some simulation of vehicle handling and stability are made and the results are showed.
Second, the theory of Preview-Follower and driver direction-control model, driver preview optimal curvature model based on this theory, is introduced. Using the software of MATLAB/Simulink, DVRCLS is established with the base of driver preview optimal curvature model and the traditional vehicle dynamic model of two degree of freedom, and the simulation of DVRCLS and the experiment with driver simulator under lane-change circumstance are done.
Finally, fully taking the advantage of ADAMS in the establishment of precise and complex vehicle dynamics model into account, and considering the dominance of MATLAB/ Simulink in control system modeling, ADAMS/Control block is used to integrate driver model based on MATLAB/ Simulink and vehicle dynamics model based on ADAMS, then the more precise DVRCLS model is established and the simulation under double lane-change in the research of vehicle handling and stability can be studied, The simulation results show that a feasible way of using ADAMS into driver-vehicle-road closed-loop system simulation is given, and the advantage of ADAMS in establishing the more precise and complex vehicle dynamics model and the dominance of MATLAB/Simulink in control system modeling are fully taken.