基于Simulink的单气室油气弹簧阻尼特性分析  

Analysis of Damping Characteristics of Single Chamber Hydro-pneumatic Spring Based on Simulink

作　　者：李晓萌 李松 陈方圆 Li Xiao-meng;Li Song;Chen Fang-yuan(College of Automotive and Transportation,Shenyang Ligong University,Shenyang 110159,China)

机构地区：[1]沈阳理工大学汽车与交通学院,辽宁沈阳110159

出　　处：《内燃机与配件》2023年第24期18-20,共3页Internal Combustion Engine & Parts

基　　金：辽宁省教育厅高等学校基本科研项目《基于主动控制的装甲车辆油气弹簧关键技术研究》项目编号:LJKZ0263。

摘　　要：介绍了一种单气室油气分离式油气弹簧的结构及其工作原理,建立了该油气弹簧阻尼特性数学模型,利用Matlab Simulink软件对该数学模型进行仿真,分析了外界激励参数和油气弹簧结构参数对其阻尼特性的影响。仿真结果表明:该油气弹簧的阻尼特性表现为非线性非对称性,伸张行程阻尼力是压缩行程阻尼力的1.6~1.7倍。外界激励幅值和频率的增大会使油气弹簧阻尼力增大,对速度特性基本没有影响。增大缸筒内径会使阻尼力变大,速度特性曲线变陡;增大阻尼孔直径会使阻尼力减小且速度特性曲线变平缓。This paper introduces the structure and working principle of a single chamber hydro-pneumatic spring with oil-gas separation type,and establishes a mathematical model of the damping characteristics of the hydro-pneumatic spring.Matlab Simulink software is used to simulate the mathematical model,and analyzes the influence of external excitation parameters and structural parameters of hydro-pneumatic spring on its damping characteristics.The simulation results show that the damping characteristics of the hydro-pneumatic spring are nonlinear and asymmetrical,and the damping force of the stretching stroke is 1.6~1.7 times that of the compression stroke.With the increase of excitation amplitude and frequency,the damping force of the hydro-pneumatic spring will increase and the velocity characteristics will be basically unaffected.The damping force increases and the velocity curve becomes steeper when the cylinder diameter increases.Increasing the diameter of the damping hole reduces the damping force and flattens the velocity characteristic curve.

关 键 词：油气弹簧 阻尼特性 Matlab Simulink 阻尼力 速度特性 

分 类 号：TK423[动力工程及工程热物理—动力机械及工程]