应用Volterra级数识别液阻悬置非线性阻尼参数  

Identifying Nonlinear Damping Parameters of Hydraulic Engine Mount using Volterra Series Theory

作　　者：甄冬[1] 高中正 刘晓昂[1,2] ZHEN Dong;GAO Zhongzheng;LIU Xiaoang(School of Mechanical Engineering,Hebei University of Technology,Tianjin 300130,China;Tianjin Key Laboratory of Power Transmission and Safety Technology for New Energy Vehicles,Tianjin 300130,China)

机构地区：[1]河北工业大学机械工程学院,天津300130 [2]天津市新能源汽车动力传动与安全技术重点实验室,天津300130

出　　处：《机械科学与技术》2022年第1期53-59,共7页Mechanical Science and Technology for Aerospace Engineering

基　　金：国家自然科学基金项目(52175084,51705128);河北省自然科学基金项目(E2019202169);天津市宇航智能装备技术企业重点实验室开放课题项目(ZNZB-2021-02)。

摘　　要：液阻悬置作为一种典型的非线性系统,其在不同激励下有着良好的动特性,而动特性又与悬置参数有着密切联系,所以本文基于Volterra级数理论,以惯性通道-浮动解耦盘式液阻悬置为研究对象,提出了该液阻悬置非线性阻尼滞后角和其液体阻尼机构非线性阻尼参数的识别方法,可在知道输出和部分结构参数的情况下来较为简单的获得液体阻尼机构的阻尼参数,且在一定范围的激励频率下得到的该阻尼参数识别值与实验得到的参数值之间的误差能保持在3%以内。另外由Volterra级数理论识别得到的液阻悬置阻尼滞后角已由平均法对比验证,同样表现出了较好的一致性。A hydraulic engine mount is a typical non-linear system.It has good dynamic characteristics under different excitations,and the dynamic characteristics are closely related to the suspension parameters.Therefore,based on the Volterra series theory,this paper studies the inertial track floating and decoupling of the hydraulic engine mount and proposes a method for identifying its nonlinear damping lag angle and the nonlinear damping parameters of the liquid damping mechanism.Its damping parameters are obtained when the output and some structural parameters are known,and the error between the damping parameter value obtained with a certain range of excitation frequencies and the experimental parameter value can be kept within 3%.The method is used to compare and verify the damping lag angle of the hydraulic engine mount identified with the Volterra series theory;the comparison shows good consistency with the experimental results.

关 键 词：液阻悬置 VOLTERRA级数 非线性阻尼参数 参数识别 

分 类 号：TH113.1[机械工程—机械设计及理论]