Test analysis on relationship between anti-vibration performanceand chaos characteristics of vehicle suspension  

汽车悬架隔振性能与混沌特征关系的实验分析(英文)

作　　者：张雨[1] 任成龙[2] 

机构地区：[1]南京工程学院机械工程系,南京210013 [2]长沙理工大学载运工具运用工程研究所,长沙410076

出　　处：《Journal of Southeast University(English Edition)》2006年第1期64-68,共5页东南大学学报（英文版）

基　　金：The Natural Science Foundation of Higher Educa-tion Institutions of Jiangsu Province (No.04KJB580037);the NaturalScience Foundation of Hunan Province (No.03JJY3006).

摘　　要：Based on the primary principle of anti-vibration on vehicles, a chaos description on the vibration in suspensions is put forward. The vibration curve of the suspensions of test vehicles is obtained based on the data from a test rig for vehicle braking vs. suspension anti-vibration efficiency. The system parameters such as first inherent frequency and damp rate, as well as the chaos parameters such as the minimum embedding dimension and correlation dimension, are calculated by the vibration curve. The relationship among anti-vibration performance, chaos parameters and system parameters of vehicle suspension is presented. The research results show that the minimum embedding dimension Mmin can be used to estimate the change of the anti-vibration performance of the front suspension of the off-road jeep. The smaller Min is, the worse anti-vibration performance is. The corresponding stiffness and damp of the front suspension of the off-road jeep is smaller. Correlation dimension D2 can be used to identify different suspension types such as those of the off-road jeep and the car. The D2 of the off-road jeep is larger than the one of the car.根据汽车隔振基本原理,提出了悬架振动的混沌描述问题.采用汽车制动悬架隔振效率实验台获取了实验汽车前、后悬架的振动曲线,计算了系统参数如一阶固有频率和阻尼比,并计算了混沌参数如最小嵌入相空间维数和关联维,获得了汽车悬架的隔振性能、混沌参数与系统参数三者之间的对应关系.研究结果表明:对于吉普车型,可采用最小嵌入相空间维数Mmin评价前悬架隔振性能的变化,Mmin值越小,隔振性能趋差,对应于前悬架的刚度和阻尼值越小;对于不同车型,可采用关联维D2区分吉普车型或轿车型的悬架,吉普车型的D2值高于轿车型.

关 键 词：VEHICLE SUSPENSION ANTI-VIBRATION CHAOS 

分 类 号：TB535.1[理学—物理] O415.5[理学—声学]