Damping Method and Characteristic Analysis of Plate Type Permanent Magnet EDS System

XU Weiyu; SHI Liming; DUAN Jiaheng; WANG Peilong; LI Yaohua; {{custom_author.name_en}}

doi:10.13334/j.0258-8013.pcsee.242145

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Damping Method and Characteristic Analysis of Plate Type Permanent Magnet EDS System

更新时间：2026-10-12

- Damping Method and Characteristic Analysis of Plate Type Permanent Magnet EDS System
- Vol. 46, Issue 8, Pages: 3396-3406(2026)
- 作者机构：
  
  高密度电磁动力与系统全国重点实验室(中国科学院电工研究所)，北京市海淀区,100190
- 作者简介：
- 基金信息：
- DOI：10.13334/j.0258-8013.pcsee.242145
  CLC：
- Received：21 October 2025，
  
  Published：2026
- 稿件说明：
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XU Weiyu, SHI Liming, DUAN Jiaheng, et al. Damping Method and Characteristic Analysis of Plate Type Permanent Magnet EDS System[J]. 2026, 46(8): 3396-3406.
DOI：

XU Weiyu, SHI Liming, DUAN Jiaheng, et al. Damping Method and Characteristic Analysis of Plate Type Permanent Magnet EDS System[J]. 2026, 46(8): 3396-3406. DOI： 10.13334/j.0258-8013.pcsee.242145.

摘要

永磁电动悬浮系统具有简单可靠、可自调节悬浮间隙等优点，但阻尼特性较弱，抗外界干扰能力差，限制了其广泛应用。该文提出一种板式永磁电动悬浮系统阻尼方法，在永磁体面向反应板一侧设置非导磁的金属阻尼板。当阻尼板与反应板在垂向相对运动时，在阻尼板中产生的涡流与反应板的涡流磁场相互作用，产生阻尼作用，对带阻尼板的悬浮系统进行动力学仿真和平台实验，验证所提方法的阻尼效果；提出一种多项式拟合方法，可快速简便获取和评价系统阻尼特征，采用拟合得到的阻尼系数计算悬浮系统运动特性与有限元数值仿真得到的系统运动结果一致。对不同阻尼板厚度及电导率对振动抑制效果的计算分析能够有效提高永磁电动悬浮系统的性能。

Abstract

The permanent magnet electrodynamic suspension (PMEDS) system has advantages such as simplicity

reliability

and the ability to self-regulate the levitation gap. However

its weak damping characteristics and poor resistance to external disturbances limit its large-scale application. This paper proposes a damping method for plate type PMEDS systems by attaching a non-magnetic metal damping plate on the side of the permanent magnets facing the reaction plate. When there is relative vertical motion between the damping plate and the reaction plate

eddy currents generated in the damping plate interact with the magnetic field of the eddy currents in the reaction plate

producing damping effect. The effectiveness of the proposed method is verified through FEM and experiments. Additionally

a polynomial fitting method (PFM) is introduced

which can quickly and easily obtain and evaluate the damping characteristics. The movement characteristics of the system calculated based on PFM are consistent with the results obtained from finite element numerical simulations. Computational analysis of vibration suppression effects for different damping plate thicknesses and electrical conductivities can effectively enhance the performance of PMEDS system.

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