• CN:11-2187/TH
  • ISSN:0577-6686

机械工程学报 ›› 2016, Vol. 52 ›› Issue (8): 29-35.doi: 10.3901/JME.2016.08.029

• 磁力机械专栏 • 上一篇    下一篇

磁流变发动机悬置的参数化建模与辨识

陈世嵬1, 杜鹏飞1, 李锐2, 王小荣1   

  1. 1. 重庆科技学院数理学院 重庆 401331;
    2. 重庆邮电大学自动化学院 重庆 400065
  • 出版日期:2016-04-15 发布日期:2016-04-15
  • 作者简介:陈世嵬,男,1984年出生,博士,副教授。主要研究方向为振动控制。E-mail:foranother@qq.com;李锐(通信作者),男,1975年出生,博士,教授,硕士研究生导师。主要研究方向为智能机械结构。E-mail:lirui_cqu@163.com
  • 基金资助:
    国家自然科学基金(11502038, 11372366)、重庆市教委科研(KJ1401335)、重庆市高校优秀人才和重庆市杰出青年基金(cstc2014jcyjjq40004)资助项目

Dynamic Parametric Modeling and Identification of Magnetorheological Fluid Engine Mounts

CHEN Shiwei1, DU Pengfei1, LI Rui2, WANG Xiaorong1   

  1. 1. College of Mathematics and Physics, Chongqing University of Science & Technology, Chongqing 401331;
    2. College of Aotomation, Chongqing University of Posts & Telecommunications, Chongqing 400065
  • Online:2016-04-15 Published:2016-04-15

摘要: 研究频变、磁变效应下的磁流变悬置的力学模型建立问题。以某磁流变悬置为例,根据Bingham模型,将悬置恢复力分为库仑阻尼力、弹性恢复力,黏性阻尼力三部分;通过分析各部分力与频率、磁场的相关性分析,提出一种改进的多项式Bingham参数化模型。该模型以外部电流、外载频率为变量,通过推导外部位移激励的能量耗散、储存关系,提出该多项式模型中九个待识别参数的辨识方法。设计了试验方案,并通过真实试验测试各种工况下该挤压式磁流变悬置的恢复力-位移关系,根据所提方法,得到在不同工况下的磁流变悬置的恢复力随电流、外载频率变化的关系。对比试验结果表明,该参数化模型在动刚度、滞后角以及滞回曲线上能良好地反映悬置的宽频段动力学特性。

关键词: 参数化建模, 磁流变悬置, 动特性试验, 发动机减振

Abstract: The present work is about the dynamic model and the experimental testing of the magnetorheological fluid(MRF) mounts, especially at wide frequency. A squeeze MRF mounts is adopted, according to Bingham model, the react force of the mounts is divided to three parts which contains coulomb damping force, viscous damping force and elastic force. An advanced polynomial Bingham parameterization model is built by analysing the relationship between the frequency, magnetic field and the each part force. The applied current and the excitation frequency in this model as variable, nine variable parameters of the second order polynomial are found by testing different operating conditions. A verification test shows the reliability and the performance of the proposed model.

Key words: dynamic test, engine isolation, magnetorheological mounts, parametric modeling

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