汽车操纵稳定性的仿真分析与影响因素研究

Simulation Analysis and Influencing Factor Study of Vehicle Handling Stability

以某型汽车为研究对象,分析其动力学特性,建立整车动力学模型,并在Matlab/Simulink中搭建动力学仿真模型,研究轮胎侧偏刚度、质心位置、汽车绕z轴转动惯量、汽车侧倾转向度、汽车侧倾阻力系数、汽车侧倾刚度等参数对汽车操纵稳定性的影响。结果表明,这些参数对汽车操纵稳定性有不同程度的影响,研究结果能够为汽车参数设计提供理论依据。

With a certain type of car as a study object, the vehicle dynamics model was built in the MATLAB/ Simulink,and the dynamic characteristics was analyzed. The factors which had a influence on the handling stability were researched and analyzed, including the tire cornering stiffness, centroid position, rotational inertia along the z axis, roll steering, rollover resistance coefficient,roll stiffness and so on. The research results show that these parameters have an effect on vehicle handling stability in different degree,and which can provide a theoretical evidence for vehicle design.