宽频吸振器设计及其刚度控制  

Design of Vibration Absorbers in Broad Frequency Band and Their Stiffness Control Based on MRE

作　　者：宋伟志[1] 赵海军[1] 姚永玉[1] 周辉[1] 陈智勇[1] 李洲稷 SONG Wei-zhi;ZHAO Hai-jun;YAO Yong-yu;ZHOU Hui;CHEN Zhi-yong;LI Zhou-ji(Luoyang Institute of Science and Technology, College of Mechanical Engineering,Luoyang 471023, Henan China)

机构地区：[1]洛阳理工学院机械工程学院,河南洛阳471023

出　　处：《噪声与振动控制》2017年第4期188-191,213,共5页Noise and Vibration Control

基　　金：国家自然科学基金联合基金资助项目(U1604141);河南省重点科研资助项目(17A430024)

摘　　要：针对传统吸振器减振频带狭窄的问题进行半主动吸振器研究,介绍磁流变弹性体的制备原料及配比。基于磁偶极子理论分析磁流变效应。利用Matlab对半主动吸振器进行建模和仿真,并分析其宽频减振性能,针对添加吸振器导致的受控系统共振现象,提出消除共振的刚度控制方法。以磁流变弹性体为弹性元件设计吸振器,通过实验验证所设计吸振器的宽频减振效果,分析受控系统的幅频特性,并对提出的控制方法进行验证。The significance of research of semi-active vibration absorbers is introduced in view of the defects of narrow damping frequency band of the passive vibration absorbers.The ingredient and prescription of magneto rheological elastomer(MRE)are introduced.The magneto rheological effect is analyzed based on magnetic dipole theory.The semiactive vibration absorber is modeled and simulated by means of Matlab code to analyze the broadband vibration performance.The control method of eliminating resonance phenomenon of the control system caused by adding vibration absorber is proposed.Finally,the semi-active vibration absorber is designed with MRE elements and its broadband vibration reduction performance is demonstrated by experiment.The amplitude frequency characteristics of the control system are analyzed and the proposed control method is verified.

关 键 词：振动与波 半主动动力吸振器 磁流变弹性体 幅频特性 控制方法 

分 类 号：TH113.1[机械工程—机械设计及理论]