空气悬架车辆动力学性能仿真分析与研究

Research and Simulation Analysis of Dynamic Performance on Air Suspension and Vehicle

文章基于非线性动力学理论,对膜式空气弹簧悬架进行了理论分析与试验研究,建立了空气弹簧悬架系统的动力学模型。在此基础上,对空气弹簧悬架系统进行动力学求解,分析其动力学行为,以及可能发生的混沌现象的临界条件。然后,基于ADAMS/Car软件进行了整车仿真模型的建立,提出了在整车系统中对空气悬架的特性及发生的混沌现象进行分析。提出了以整车操纵稳定性为目标函数,通过优化悬架设计点,缓解空气悬架的混沌现象,并在一定程度上改善了整车的操纵稳定性。

Based on the nonlinear dynamics theory, the membrane type air spring suspension is studied theoretically and experimentally, and the dynamic model of the air spring suspension system is established. On this basis, the dynamics of the air spring suspension system is solved, and the dynamic behavior and the critical conditions of the chaotic phenomena are analyzed. Then, the whole vehicle simulation model is built based on ADAMS/Car software, and the characteristics of the air suspension and the chaotic phenomena are analyzed. The vehicle handling stability is taken as the objective function, and the chaos of the air suspension is alleviated by optimizing the suspension design point, and the handling stability of the whole vehicle is improved to a certain extent.