Pneumatic suspension is the most significant subsystem for an automobile. In this paper, a simplified and novel pneumatic spring structure with only a conical rubber surface is presented and designed to reduce the influence of external factors besides the pneumatic. The nonlinear stiffness of the pneumatic spring is analyzed based on the ideal gas model and material mechanics. Natural frequency analysis and the transmission rate of the pneumatic suspension are obtained as two effect criteria for the dynamic model. The vibration isolation system platform is established in both simulation and prototype tests. With the results from the simulation, the rules of the pneumatic suspension are analyzed, and the optimal function of mass and pressure is achieved. The experiment results show the analysis of the simulation to be effective. This achievement will become an important basis for future research concerning precise active control of the pneumatic suspension in vehicles.

中文翻译：

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基于动力学分析的新型汽车气动悬架机构及优化

气动悬架是汽车最重要的子系统。在本文中，提出并设计了一种简化且新颖的只有锥形橡胶表面的气动弹簧结构，以减少气动之外的外部因素的影响。基于理想气体模型和材料力学分析了气动弹簧的非线性刚度。自然频率分析和气动悬架的传输率被作为动力学模型的两个影响标准获得。在仿真和原型测试中建立了隔振系统平台。根据仿真结果，分析了气动悬架的规律，实现了质量和压力的最优函数。实验结果表明模拟分析是有效的。