同侧两轴连通式油气悬架系统研究

Study on Two-axis Interconnected Hydro-pneumatic Suspension System on Same Side

为改善车辆的振动性能,提出车身同侧的两轴连通式油气悬架。介绍了同侧两轴连通式油气悬架的结构和工作原理,并在此基础上建立了其数学模型;对悬架系统的刚性特性和阻尼特性进行了研究,分析了系统的连通特性,并研究了系统参数对悬架性能的影响;分析了悬架系统对激励的响应机制。研究结果表明:相对于独立式悬架系统,同侧两轴连通式悬架系统具有振动更平稳,恢复平衡状态更快,更有利于快速通过复杂路面等优点;同侧两轴连通式悬架的阻尼力不具有连通性,且其大小是由多因素共同决定的;外界激励的频率主要影响悬架的阻尼力,相位差主要影响悬架的刚性力。

In order to improve the vibration performance of a vehicle, the two-axis interconnected hydro-pneumatic suspension system on same side was proposed. The mathematic model of the hydro-pneumatic suspension system was built based on its structures and working principles. The characteristics of rigid force and damping force for the suspension system were investigated, the connectivi-ty of the suspension system was analyzed, and the effects of system parameters on the performance were studied. The response mecha-nism of excitation for the suspension system was studied. The results show that the vibration stability of the two-axis interconnected hydro-pneumatic suspension system on same side is better than normal hydro-pneumatic suspension system, and can recovery equilibri-um state faster, so ifs more conducive to rapid through complex pavements. The damping force is unconnected and determined by many factors. The frequency of the excitation mainly influences the damping force and the phase difference mainly affects the rigid force of the suspension.