Abstract：To improve the ride comfort of commercial vehicles, a quasi-zero stiffness pneumatic suspension system for commercial vehicles was proposed in this paper. First, air spring was adopted to realize the positive stiffness for variable load. By charging and venting of the air spring, system was stabilized at the predetermined equilibrium position. The negative stiffness system adopted double-acting pneumatic actuators to reduce the dynamic stiffness. Secondly, when analyzing the system stiffness characteristics, the changing progress of gas inside the air spring was regarded as an isothermal adiabatic process and air spring's stiffness was gained by substituting the equation of gas state. Then, the parameters of the system were designed by calculating the system stiffness and the one-quarter suspension model was built to analyze the dynamic characteristic. Finally, the validity of the system was verified by experiments. The results show that the proposed suspension system reduces the root-mean-square value of vertical acceleration by 15% and increases the vertical dynamic travel by less than 4%.
收稿日期: 2020-07-20
出版日期: 2021-12-28
引用本文:
徐兴，施天玲，江昕炜，王峰. 准零刚度空气悬架系统建模与动态特性研究[J]. 振动与冲击, 2021, 40(24): 205-211.
XU Xing,SHI Tianling,JIANG Xinwei,WANG Feng. Modeling and dynamic characteristic analysis of a quasi-zero stiffness pneumatic suspension system. JOURNAL OF VIBRATION AND SHOCK, 2021, 40(24): 205-211.
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