东南大学学报（英文版）2018，Vol.34Issue(1)：54-61,8.DOI:10.3969/j.issn.1003-7985.2018.01.009
考虑空气效应的磁流变阻尼器建模与控制
Modeling and control of MR damper considering trapped air effect
摘要
Abstract
Due to the high viscosity of magnetorheological (MR) fluid, eliminating air pockets dissolved in the fluid is very difficult, which results in a force lag phenomenon. In order to evaluate the performance of a semi-active control system based on the MR damper considering the trapped air effect, a performance test on a MR damper is carried out under different loading cases, and the influence of the input current, excitation amplitude and frequency on the force lag phenomenon is analyzed. A concise and efficient parametric model, combining the simple Bouc-Wen model and a spring with small stiffness, is proposed to portray the experimental characteristics of the MR damper with force lag, and then the response analysis of the semi-active controlled single-degree-of-freedom (SDOF) structure is performed using the classic clipped-optimal control strategy based on acceleration feedback. Numerical results show that the trapped air in the MR fluid can weaken the control effect of the MR damper, and the performance of the semi-active control system will be reduced more obviously and become close to the passive-off control with the increasing content of air trapped in the MR fluid.关键词
磁流变阻尼器/性能试验/气泡/力滞/半主动控制Key words
magnetorheological damper/performance test/air pocket/force lag/semi-active control分类
建筑与水利引用本文复制引用
许飞鸿,徐赵东,郭迎庆,张香成,赵玉亮..考虑空气效应的磁流变阻尼器建模与控制[J].东南大学学报（英文版）,2018,34(1):54-61,8.基金项目
The National Science Fund for Distinguished Young Scholars(No.51625803),China and Korea International Cooperation Project of the National Key Research and Development Program(No.2016YEE0119700),the Fundamental Research Funds for the Central Universities(No.3205008102),the Project Funded by the Priority Aca-demic Program Development of Jiangsu Higher Education Institutions(No.CE02-2-33),Research and Innovation Project for College Gradu-ates of Jiangsu Province(No.KYLX15_0088,KYLX16_0255),the State Foundation for Studying Abroad,China. （No.51625803）
