[1] Xu Feihong, Xu Zhaodong, Guo Yingqing, Zhang Xiangcheng, et al. Modeling and control of MR damper considering trapped air effect [J]. Journal of Southeast University (English Edition), 2018, 34 (1): 54-61. [doi:10.3969/j.issn.1003-7985.2018.01.009]

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Modeling and control of MR damper considering trapped air effect()

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Journal of Southeast University (English Edition)[ISSN:1003-7985/CN:32-1325/N]

Volumn:

34

Issue:

2018 1

Page:

54-61

Research Field:

Civil Engineering

Publishing date:

2018-03-20

Info

Title:

Modeling and control of MR damper considering trapped air effect

Author(s):

Xu Feihong¹;  Xu Zhaodong¹;  Guo Yingqing²;  Zhang Xiangcheng³;  Zhao Yuliang¹

¹Key Laboratory of Concrete and Prestressed Concrete Structure of Ministry of Education, Southeast University, Nanjing 210096, China
²Nanjing Dongrui Damping Control Technology Co., Ltd, Nanjing 210033, China
³School of Mechanics and Engineering Science, Zhengzhou University, Zhengzhou 450001, China

Keywords:

magnetorheological damper;  performance test;  air pocket;  force lag;  semi-active control

PACS:

TU352

DOI:

10.3969/j.issn.1003-7985.2018.01.009

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.

References:

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Memo

Memo:

Biographies: Xu Feihong(1989—), male, Ph.D.candidate;Xu Zhaodong(corresponding author), male, doctor, professor, xuzhdgyq@seu.edu.cn.
Foundation items: 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 Academic Program Development of Jiangsu Higher Education Institutions(No.CE02-2-33), Research and Innovation Project for College Graduates of Jiangsu Province(No.KYLX15_0088, KYLX16_0255), the State Foundation for Studying Abroad, China.
Citation: Xu Feihong, Xu Zhaodong, Guo Yingqing, et al. Modeling and control of MR damper considering trapped air effect [J].Journal of Southeast University(English Edition), 2018, 34(1):54-61.DOI:10.3969/j.issn.1003-7985.2018.01.009.

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