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中南大学学报(英文版)

Journal of Central South University

Vol. 22    No. 7    July 2015

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Modeling and characterization of novel magnetorheological (MR) cell with individual currents
ZHENG Jia-jia(郑佳佳)1, WANG Xin-jie(王新杰)1, OUYANG Qing(欧阳青)1, LI Yan-cheng(李延成)2, WANG Jiong(王炅)1

1. School of Mechanical Engineering, Nanjing University of Science and Technology, Nanjing 210094, China;
2. Centre for Built Infrastructure Research, School of Civil and Environmental Engineering,
Faculty of Engineering and Information Technology, University of Technology Sydney, NSW 2007, Australia

Abstract:Magnetorheological (MR) cell with multi-coil was designed to enlarge the range of controllable transmission torque by increasing the effective length. Individual input current was proposed to maximize its potential for reducing power consumption and generating large yield stress. Finite element analysis was performed to analyze magnetic field distribution, based on which a prototype MR cell was fabricated and tested to investigate the performance of various combinations of individual input currents. A good correlation was identified between experimental results and FEA predications. The results show that the power consumption can be reduced to 42.4%, maintaining large transmission torque, by distributing the total current (2 A) to three individual magnetic coils. In addition, optimal results of four input currents considering a multi-objective function are obtained by changing the weighting factor λ. The advantage of this design, such as lower power consumption and more control flexibility, makes it more competitive in engineering applications that require large energy consumption.

 

Key words: magnetorheological (MR) cell; multi-coil; individual current; power consumption; optimization

中南大学学报(自然科学版)
  ISSN 1672-7207
CN 43-1426/N
ZDXZAC
中南大学学报(英文版)
  ISSN 2095-2899
CN 43-1516/TB
JCSTFT
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