汽车一般双轴悬架模型及其平顺性分析  

The Automobile Dual Suspension Model and the General Analysis of Its Riding Comfort

作　　者：黄治潭[1] 张孝祖[1] 乐巍[1] 

机构地区：[1]江苏大学汽车与交通工程学院,江苏镇江212013

出　　处：《江苏大学学报（自然科学版）》2003年第1期51-54,59,共5页Journal of Jiangsu University：Natural Science Edition

基　　金：教育部博士点基金资助项目 (980 2 990 2 )

摘　　要：对前后悬架幅频特性不同、悬挂质量分配系数不等于 1的一般的汽车双轴悬架模型 ,由于前后悬架存在动力学上的耦合 ,单纯采用微分方程分析会出现困难 笔者采用动力学微分方程转化为状态方程的分析方法 ,将前后轮双输入折算为前轮单输入 ,从而方便地求出车身上任一点垂直加速度对前轮路面不平度速度输入的幅频特性和车身俯仰角加速度对前轮路面不平度速度输入的幅频特性 基于此方法 。The amplitude frequency characteristics of the front and rear suspensions of the automobile general dual suspension are different and the distribution coefficient of the mass suspension doesn't equal to one. Because front and rear suspensions have a dynamic coupling, it is difficult to analyse them merely by different coefficient equations. By using the method of transfering the different dynamic coefficient equations into the state equations and converting the double inputs of both front tyre and rear tyre into single input of front tyre, the amplitude frequency characteristics by the front speed input of road surface roughness of vertical acceleration of any point on vehicle body and the rotary acceleration of vehicle body are conveniently obtained. Based on this analytical method, the riding comfort effects of general dual suspension model for different distribution coefficients of mass suspension are also studied.

关 键 词：双轴悬架模型 平顺性分析 汽车 状态方程 频响函数 动力学方程 

分 类 号：U463.33[机械工程—车辆工程] U461.4[交通运输工程—载运工具运用工程]