重型半挂车的动力学建模及侧倾稳定性分析

Dynamic Modeling and Roll Stability Analysis of Heavy Tractor Semi-trailers

在Matlab/simulink中建立重型半挂车的数学模型及动力学仿真模型,进行变车速阶跃转向输入下,车辆结构参数对其侧倾稳定性影响的仿真分析。得出重型半挂车侧倾稳定性与主要结构参数和不同车速间的内在关系,为重型半挂车侧倾稳定性设计提供理论依据。

The research was made for setting up dynamic model of heavy tractor semi-trailers, inclusive of simulating roll stability with the steering step input. The structure parameters affecting roll stability was also analyzed through simulation. The relationship between roll stability with main structure parameters and different vehicle speeds was obtained for heavy tractor＇ s semi-trailers, which laid down the basis for stability design.