摘要
悬架系统是汽车底盘的重要部件,它的设计参数直接关系到载货汽车行驶的平顺性和操纵稳定性。为了对载货汽车行驶平顺性进行科学评价,建立了载货汽车1/2车辆五自由度仿真模型,采用频域分析法、以1/3倍频带加速度均方根值作为评价指标、用Matlab编制了随机路面输入下的悬架系统性能仿真程序,通过仿真得到空载和满载情况下加速度功率谱及加速度均方根值仿真曲线图,较好地反映了载货汽车行驶平顺性的实际状况。所开发的仿真程序可用于对汽车悬架系统进行平顺性评估以及后续的参数优化设计。
Suspension system is an important component for chassis, its design parameters are related to the ride comfort and the drive stability of a truck In order to evaluate automotive ride comfort scientifically, a 1/2 vehicle model with five DOF was established： By means of spectral analysis, taking root mean square of accelerate under one-third octave bainds as evaluation criterion, a simulation program for performance of truck＇s suspension system under random input of road situation was developed with Matlab The power spectrum of accelerate and the curve of its root mean square under both empty- and full-load situations gained in the simulation were rather corresponding to the practical situation of truckso Such a simulation program can be used in analyzing of vehicle ride comfort and its parameter optimization further
出处
《机械》
2008年第5期35-37,41,共4页
Machinery
关键词
被动悬架
平顺性
仿真
passive suspension
ride comfort
simulation
