大学物理 ›› 2021, Vol. 40 ›› Issue (9): 68-.doi: 10.16854 / j.cnki.1000- 0712.200512

• 大学生园地 • 上一篇    下一篇

二维涡流的反馈与操控

刘皓天 ,冯杰成 ,康现伟   

  1. 1. 北京师范大学物理学系,北京 100875;2. 北京师范大学核科学与技术学院,北京 100875
  • 收稿日期:2020-11-22 修回日期:2021-05-02 出版日期:2021-09-20 发布日期:2021-09-24
  • 通讯作者: 康现伟,E-mail: 11112018023@ bnu. edu. cn
  • 作者简介:刘皓天(1999—),男,山东淄博人,北京师范大学物理学系2018 级本科生.

The two-dimensional eddy current’s feedback and manipulation

LIU Hao-tian1 , FENG Jie-cheng1 , KANG Xian-wei2   

  1. 1.Department of Physics, Beijing Normal University, Beijing 100875, China; 2 College of Nuclear Scienceand Technology, Beijing Normal University, Beijing 100875, China
  • Received:2020-11-22 Revised:2021-05-02 Online:2021-09-20 Published:2021-09-24

摘要: 本文研究方向为二维涡流的反馈效应和操控技术.首先研究了无损探测中最重要的涡流探测,借鉴电磁辐射问题的结论,证明了该逆问题解的唯一性.其次,探究了涡流探测在工业中的原理以及影响涡流探测的因素. 最后,利用麦克斯韦方程组在任意曲面坐标系和直角坐标系下形式是等价的这一结论,通过改变磁导率、介电常数来改变电磁场的坐标,达到对涡流操控的目的.

关键词: 涡流探测, 涡流工业应用, 涡流操控

Abstract: This article is proposed to research the two-dimensional eddy current’s feedback and

manipulation. First of all, aiming at the most important eddy current detection of

non-destructive detection, the uniqueness of the

solution for the inverse problem is proved, according to the theory of electromagnetic radiation.

Secondly, the theory of eddy detection in industry and some factors that influence eddy

detection are investigated. Lastly, because the Maxwell’ s equations are equivalent

between arbitrary curved coordinate systems and rectangular coordinate systems, by

changing the permeability and the dielectric constant, the coordinate of electromagnetic

field can be changed accordingly, which results in controlling the eddy current field.

Key words: eddy detection, the industrial application of eddy detection, eddy manipulation