基于路面激励的车辆油气悬架减振系统参数优化  

Parameter optimization of the dual-cavity hydro-pneumatic suspension damping system for construction vehicles based on road-surface excitation

作　　者：许文靖[1] 庞洪臣 XU Wen-jing;PANG Hong-chen(Department of Electromechanical Technology,JiangMen Polytechnic,Jiangmen 529000;School of Mechanical and Power Engineering,Guangdong Ocean University,Zhanjiang 524088)

机构地区：[1]江门职业技术学院机电技术系,广东江门529000 [2]广东海洋大学机械与动力工程学院,广东湛江524088

出　　处：《机械设计》2021年第12期98-105,共8页Journal of Machine Design

基　　金：江门职业技术学院科研项目(2020HQ065)。

摘　　要：为了提高装载机整车结构的可靠性与稳定性,提出了一种基于拉丁超立方法和粒子群算法的优化方法对油气悬架系统参数进行优化。以车身加速度为优化目标,以车辆行驶稳定性为约束条件,得到了装载机在不同路面激励和不同车速下的油气悬架参数优化结果,并分析优化后装载机在C级和E级路面激励下舒适性的改善情况。试验结果表明,相对于原系统,试验样机在高速行驶阶段的垂向加速度降低了大约20%。研究结果对于优化油气悬架的动态性能、提高工程机械的驾驶舒适度具有重要的指导意义。In this article, in order to improve the reliability and stability of the loader’s entire vehicle structure, optimization is conducted based on the Latin hyper-stand method and optimization of particle swarm is carried out the parameters of the hydro-pneumatic suspension system. With the vehicle’s body acceleration as the optimization target and its driving stability as the constraint conditions, the results of the hydro-pneumatic suspension parameters of the loader under different road excitations and vehicle speeds are identified, and the analysis is conducted on improvement of loader comfort under the excitation of the C-level and E-level road surface after optimization. These results show that compared with the original system, the experimental prototype’s vertical acceleration reduces by about 20% during high-speed driving. These results have important significance for optimizing the dynamic performance of hydro-pneumatic suspension and improving construction machinery’s driving comfort.

关 键 词：工程机械 油气悬架 刚度和阻尼特性 行驶平顺性 

分 类 号：U463.83[机械工程—车辆工程]