路面连续减速带下汽车悬架的混沌振动分析

针对汽车通过连续减速带时所产生振动,采用二自由度非线性悬架系统为研究对象,分析其混沌动力学行为,从而实现对系统混沌进行抑制.通过分析高速公路上特殊路段连续减速带的参数和设置方式,建立其静态激励模型和得出动态激励相关函数,以数值仿真研究了非线性汽车模型在此激励下的混沌振动,获得导致系统发生混沌振动的频率条件,及车速、减速...

Chaotic Vibration of Vehicle Suspension Excited by Consecutive Speed Control Hump

To analyze the vibration  of vehicle excited by consecutive speed control hump on highway, the chaotic dynamic behavior of a nonlinear 2\|DOF suspension system was discussed to avoid the  appeared chaos. A static excitation model of speed control hump was set up and the correlative function of dynamic excitation was presented by analysing the form and parameters of the continuous speed control humps on the specific section of expressway.  Frequency condition that could result in chaotic vibration was obtained and the relationship among the speed, the parameters of humps and chaotic motion was established by investigating chaotic vibrations for a nonlinear vehicle suspension model with numerical simulation. The results show that the chaotic motion may occur as the vehicle moves over consecutive  speed control humps, the chaotic motion can be controlled by using state variable feedback.