基于混沌激振器的冲击压实轮机构的系统识别  

System Identification of Impact Compaction Wheel Mechanism Based on Chaotic Vibration Exciter

作　　者：何康康[1] 张洪[1] 史富增[1] 

机构地区：[1]太原科技大学机械工程学院,太原030024

出　　处：《太原科技大学学报》2012年第4期276-280,共5页Journal of Taiyuan University of Science and Technology

基　　金：太原科技大学研究生科技创新项目(20111018)

摘　　要：基于以混沌激振器为激励设备的八边形冲击压路机压实轮的工作状态,建立"机架-压实轮-土壤"的四自由度动力学模型,对压实轮系统的动态特性进行了研究。发现其相轨图在一定区域内缠绕、重叠、不重复,poincare图分布在一定区域内,不重叠并具有一定结构,其最大Lyapounov指数λmax=0.0317.仿真结果从定性和定量两方面表明,八边形工作轮系统的运动是混沌的,混沌激振同样适用于冲击压实。仿真结果对混沌激振在冲击压路机中的应用及混沌冲击压路机的设计及研究有参考价值。Based on the working state of octagonal compaction roller wheel with device,4-DOF dynamics model of rack-compaction wheel-soil was built and the chaotic vibration exciter as exciting dynamic performances of compac- tion wheel system were studied. The simulation illustrated that the phase diagram was track-winding, overlapping and non-repetitive in a certain area, the poincare fingure was distributed in certain aera without overlop and with a certain structure. Its maximum Lypounov index λmax is 0.0317. The results indicate both qualitatively and quantitatively that the system of octagonal compaction roller is chaotic and chaotic vibration is also adaptable to impact compaction. The simulation results could provide reference value for the application of chaotic excitation in impact roller and the design of chaotic impact roller.

关 键 词：混沌激振器 冲击压路机 混沌识别 动态仿真 

分 类 号：U415.521[交通运输工程—道路与铁道工程]