车辆临界稳定状态仿真研究

在虚拟样机软件下建立目标车型的15自由度的多刚体动力学整车模型，MATLAB／Simulink软件下建立目标车型理想状态下的参考模型一线性二自由度模型。通过联合仿真，以两模型中车辆的质心侧偏角和横摆角速度作为比较参数，分析目标车型稳定性状态。可得出目标车型在什么工况下进入临界稳定状态，为车辆结构参数合理性设计、车辆稳定性控制系统的开发提供理论基础。

Critical Steady-State Simulation of Vehicle

Established the 15 degrees of freedom inulti-body vehicle dynamics model under the Virtual Prototyping Software, the reference model-the linear model of two degrees of freedom under software MATLAB/Simulink. Through co-simulation, Compared of the center side angle and yaw rate of the two models, analyzed the stability of the state of the vehicle. So, we can know when vehicles enter the critical steady state. This can offer the theoretical basis for the designing of structural parameters of vehicles and the vehicle stability control system development.