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Applied Mathematics and Mechanics (English Edition) ›› 2000, Vol. 21 ›› Issue (9): 1034-1044.

• 论文 • 上一篇    下一篇

ELECTROMAGNETIC TOMOGRAPHY (EMT): THEORETICAL ANALYSIS OF THE FORWARD PROBLEM

熊汉亮, 徐苓安   

  1. School of Electrical Automation and Energy Engineering, Tianjin University, Tianjin 300072, P. R. China
  • 收稿日期:1999-01-29 修回日期:2000-06-15 出版日期:2000-09-18 发布日期:2000-09-18
  • 基金资助:

    the National Natural Science Foundation of China(69574021,59877018)

ELECTROMAGNETIC TOMOGRAPHY (EMT): THEORETICAL ANALYSIS OF THE FORWARD PROBLEM

XIONG Han-liang, XU Ling-an   

  1. School of Electrical Automation and Energy Engineering, Tianjin University, Tianjin 300072, P. R. China
  • Received:1999-01-29 Revised:2000-06-15 Online:2000-09-18 Published:2000-09-18
  • Supported by:

    the National Natural Science Foundation of China(69574021,59877018)

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摘要： Inductance-based electromagnetic tomography (EMT) is a novel industrial process tomographic technique. Exact expressions of the magnetic field distribution in a two-dimensional object space were derived by analytically solving the forward problem for a particular two-component flow. The physical mechanisms within the sensor and the detectability limits of the EMT technique were quantitatively analyzed. Direct mathematical expressions for the field sensitivity and the sensitivity maps were established. To a certain extent, mathematical and theoretical bases are given for quantitative design of the sensor, detectability analysis of the EMT technique and image reconstruction of two-component processes based on the linear back-projection algorithm.

Abstract: Inductance-based electromagnetic tomography (EMT) is a novel industrial process tomographic technique. Exact expressions of the magnetic field distribution in a two-dimensional object space were derived by analytically solving the forward problem for a particular two-component flow. The physical mechanisms within the sensor and the detectability limits of the EMT technique were quantitatively analyzed. Direct mathematical expressions for the field sensitivity and the sensitivity maps were established. To a certain extent, mathematical and theoretical bases are given for quantitative design of the sensor, detectability analysis of the EMT technique and image reconstruction of two-component processes based on the linear back-projection algorithm.

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