磁流变阻尼器动态响应分析  

Dynamic Response Analysis of MR Damper

作　　者：马胜楠 吴敬宇 梁冠群 周福强 危银涛[3] MA Shengnan;WU Jingyu;LIANG Guanqun;ZHOU Fuqiang;WEI Yintao(Key Laboratory of Modern Measurement&Control Technology Ministry of Education,Beijing Information Science&Technology Universitys,Beijing 100192,China;International Design Institute,Zhejiang University,Hangzhou Zhejiang 310012,China;State Key Laboratory of Automotive Safety and Energy,Tsinghua University,Beijing 100084,China)

机构地区：[1]北京信息科技大学现代测控技术教育部重点实验室,北京100192 [2]浙江大学国际设计研究院,浙江杭州310012 [3]清华大学汽车安全与节能国家重点实验室,北京100084

出　　处：《机床与液压》2023年第9期144-150,共7页Machine Tool & Hydraulics

基　　金：国家自然科学基金国际(地区)合作与交流项目(51761135124);国家自然科学基金面上项目(11672148);汽车安全与节能国家重点实验室基金;清华大学Z05专项基金。

摘　　要：磁流变阻尼器的动态响应决定了其实时控制效果,为了增加磁流变阻尼器响应速度和减小响应时间,对其动态响应影响因素进行分析。针对某型号磁流变阻尼器,定义其响应时间的组成,建立时滞模型。建立了两级线圈同向串联、反向串联、同向并联、反向并联的电流及磁场响应模型,分析磁流变液两阶段的流变响应模型,得到反向串联与反向并联的电磁响应时间较小,且流变响应仅与间隙与动力黏度有关。并基于瞬态有限元磁场分析,从平均有效剪切屈服强度的角度来衡量阻尼器的动态响应过程,得到了不同磁路结构对阻尼器响应时间的影响及其影响原因。The dynamic response of MR damper determines the real-time control effect.In order to increase the response speed and reduce the response time of MR damper,the influencing factors of its dynamic response were analyzed.Therefore,for a certain type of MR damper,the composition of its response time was defined,and the time-delay model was established.The current and magnetic field response models of two-stage coils in series in forward direction and in reverse direction,in parallel on the same side and on the opposite side were established.The two-stage rheological response model of MR fluid was analyzed.The results show that the electromagnetic response time of reverse series and in parallel on the opposite side are small,and the rheological response is only related to the gap and dynamic viscosity.Based on the transient finite element magnetic field analysis,the dynamic response process of the damper is measured from the perspective of the average effective shear yield strength.The influence of different magnetic circuit structures on the response time of the damper is obtained,and the reasons are analyzed.

关 键 词：磁流变阻尼器 动态响应 电磁响应 流变响应 有限元分析 

分 类 号：TH703[机械工程—仪器科学与技术]