摘要
建立了双气室油气隔离式油气悬架复杂的非线性数学模型。数学模型中引入了微分的概念,考虑了液压油的可压缩性、液压软管的膨胀和长度以及液压油在管道流动过程中由于截面积突变、管道长度等引起的两种压力损失,使数学模型更真实准确地反映了物理模型。利用MATLAB/S imu link为数学模型编制了仿真程序,以正弦波作为输入信号进行仿真,通过仿真曲线对油气悬架的阻尼特性、刚度特性以及频率特性进行了详细地分析,并研究了影响油气悬架性能的各种因素,为油气悬架的参数优化和匹配奠定了基础。
This paper builds a complicated nonlinear mathematical model for hydro - pneumatic suspension which has two isolated gas chambers. The conception of differential is introduced into the mathematical model. And the model takes the condensability of fluid, the bulge and length of hose into account. The two kinds of pressure losses, caused by jumping of sectional area and by ducting length and other factors are also considered and computed in the model. All these factors make the model reflecting the physical model really. Utilizing the Matlab/Simulink software, we compiled the simulation program for the mathematical model. In the simulation, we adopted sine wave as the input signal. Finally we carried out detailed analysis on the damping characteristic, rigidity characteristics as well as frequency characteristics of the hydro - pneumatic suspension, and investigated different kinds of factors which contribute to the performance of hydro - pneumatic suspension. This research established some basis for the optimization and matching of hydro - pneumatic suspension.
出处
《计算机仿真》
CSCD
2006年第4期241-244,293,共5页
Computer Simulation
关键词
油气悬架
非线性数学模型
仿真分析的研究
Hydro - pneumatic suspension
Non - linear mathematical model
Research of simulation analysis
