磁流变阻尼器系统的非线性动力学分析  

Nonlinear dynamic analysis of magnetorheological damper system

作　　者：马新娜[1] 杨绍普[1] 刘晓星[1] 葛占胜[1] 

机构地区：[1]石家庄铁道大学,石家庄050043

出　　处：《振动与冲击》2011年第6期31-35,共5页Journal of Vibration and Shock

基　　金：国家杰出青年基金项目(50625518);国家自然基金青年项目(10902074);上海交通大学机械系统与振动国家重点实验室资助(MSV-2009-03);教育部长江学者和创新团队发展计划(TRT0971)

摘　　要：以单自由度非线性磁流变阻尼器系统为研究对象,通过变换磁流变阻尼器的外加电压,对系统实施半主动开-关控制。在分析系统运动特征基础上,给出系统的运动微分方程,利用平均法进行分析求解。根据奇异性理论得到系统基的普适开折以及特例情况下的转迁集。并将磁流变阻尼器应用到转向架横向动力系统的振动控制中,分析了系统参数对幅-频特征曲线以及稳定性的影响。Nonlinear single degree of freedom magnetorheological damper system was studied.The system can implement the semi-active on-off control strategy through changing the voltage input on MR damper.Based on analyzing the dynamic features of the system,its differential equation was presented and solved by using the averaging method.According to the singularity theory,the universal unfolding of system and the transition set under a special circumstances were obtained.Then the magnetorheological damper was applied in the dynamic system of lateral bogie as a vibration controller.The effects of system parameters on the amplitude-frequency property and stability were analyzed in detail.

关 键 词：磁流变阻尼器 非线性系统 平均法 半主动控制 奇异性理论 

分 类 号：O322[理学—一般力学与力学基础] TU311[理学—力学]