基于SIMPACK的汽车操纵稳定性仿真分析

汽车操纵稳定性是汽车的重要性能之一,然而多数关于汽车操纵稳定性的仿真都是基于汽车开路系统的仿真,如何将驾驶员的意识反馈到汽车的操纵特性上,形成人—汽车闭路系统的仿真还很少涉及。根据多体动力学理论基础,应用多体系统动力学仿真分析软件SIMPACK建立了汽车的整车模型,将驾驶员前方预描距离作为控制参数输入到转向操纵系统中,进而形成人—汽车闭路系统的仿真。最后将有预描距离和无预描距离作比较,得出驾驶员视野前方的预描距离对汽车的操纵稳定性起着很大的影响。

Vehicle Handling Stability is one of the most important performance of automohile. Most of the simuliation rescarch of vehicle handling stability based on the open system simulation.Less can control the driver＇s sense back on the vehiele＇s handling featores,or make up to the closed system of driver and autmnobile. Based on the theory of muti-body dynamics,a vehicle model is built by using SIMPCAK software. Put in the front pre-scanning distance of driver as the control parameter to Steering control system. This can make up to the closed system of driver and automobile. At last,compared the pre-scanning distance and non pre-scanning distance,we can get how important the front pro-scanning distance of driver is to the vehicle handling stability.