基于混沌特征参数的车辆悬架系统隔振性能辨识  

Identification of Anti-vibration Performance of Vehicle Suspension System Based on the Chaos Characteristics Parameters

作　　者：任成龙[1] 张雨[1] 

机构地区：[1]长沙理工大学,湖南长沙410076

出　　处：《长沙交通学院学报》2005年第3期6-10,共5页Journal of Changsha Communications University

基　　金：湖南省自然科学基金(03JJY3006);江苏省高校自然科学研究计划(04KJB580037)资助项目

摘　　要：介绍了混沌特征参数如关联维数D2和Kolmogorov熵的基本理论。采用汽车制动-悬架隔振效率试验台获取了BJ212越野吉普车前、后悬架的振动曲线,对其计算了系统参数如一阶固有频率和阻尼比。绘制了试验车辆悬架系统振动信号的自功率谱密度图形,求得了其一阶固有频率处的带中功率。给出了计算混沌特征参数的MATLAB程序流程图,并计算了关联维数D2和Kolmogorov熵,从而获得了车辆悬架系统隔振性能与混沌特征参数两者之间的对应关系。The elemental theory of chaos characteristics parameters such as correlation dimension and Kolmogorov entropy are introduced. Based on the data from the test rig for vehicle braking-suspension anti-vibration efficiency, the vibration curves of front and rear suspension of BJ212 road-off jeep are obtained. The system parameters such as first order nature frequency and damp rate are calculated through the vibration curve. The curve of power spectrum density of test vehicle suspension vibration signal is given and the power in the band containing the first order nature frequency is got. The flow chart of MATLAB program is put forward and the chaos characteristics parameters such as correlation dimension and Kolmogorov entropy are calculated. The relationship between the anti-vibration performance and chaos characteristics parameters of vehicle suspension is presented.

关 键 词：混沌 车辆 悬架 隔振 辨识 

分 类 号：O415.5[理学—理论物理] U46[理学—物理]