• CN:11-2187/TH
  • ISSN:0577-6686

›› 2014, Vol. 50 ›› Issue (4): 135-141.

• 论文 • 上一篇    下一篇

磁流变减振器建模与试验

马然;朱思洪;梁林;TALPUR Mashooque Ali   

  1. 南京农业大学工学院;江苏师范大学机电工程学院;中国矿业大学电力工程学院
  • 发布日期:2014-02-20

Modelling and Testing of Magnetorheological Damper

MA Ran;ZHU Sihong;LIANG Lin;TALPUR Mashooque Ali   

  1. College of Engineering, Nanjing Agricultural University School of Mechanical and Electrical Engineering, Jiangsu Normal University School of Electric Power Engineering, China University of Mining and Technology
  • Published:2014-02-20

摘要: 建立较为精确的磁流变减振器阻尼力模型是设计控制策略并获得良好控制效果的关键。基于流体动力学理论和磁流变液流变特性,对阻尼通道内磁流变液进行流体动力学分析,详细推导磁流变减振器阻尼力模型。结合阻尼通道处磁场有限元分析,完善阻尼力模型。最后试验测试自制磁流变减振器在不同励磁电流和不同活塞速度下的示功特性和速度特性,利用试验数据对模型进行系数辨识,建立磁流变减振器简化力学模型。研究结果表明,励磁电流小于0.8 A时,输出阻尼力试验值与计算值较吻合,当励磁电流增大,阻尼力试验值与计算值最大相差约100 N,计算值相对于试验值的误差在19%以内,该简化力学模型能描述磁流变减振器的基本力学特性,能为半主动悬架控制研究提供理论指导。

关键词: 磁流变减振器;台架试验;力学模型;系数辨识

Abstract: The working principle of a flow pattern magnetorheological(MR) damper is introduced. The fluid dynamic analysis is done based on Bingham plastic model and fluid motion differential equation, and then the mathematical model of MR damper is established. The charts of damping-displacement characteristic and damping-velocity characteristic are obtained during the experiment. The model coefficients are identified based on test results, and then the simplified mechanical model is established. Results show that the applied current has direct relation with MR Damper performance but it gives best results when applied current is less than 0.8 A. The difference between damping force experimental values and the calculated value is observed about 100 N, and the difference of 19% is observed. The simplified mechanical model can describe the basic mechanical properties of the MR damper.

Key words: magnetorheological damper;bench test;mechanical model;coefficient identification

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