Distributed Current Source Method for Modeling Magnetic and Eddy-Current Fields Induced in Nonferrous Metallic Objects

Lin, Chun-Yeon; Lee, Kok-Meng; Hao, Bingjie

doi:10.1109/tmech.2017.2771763

Cited by 19 publications

(2 citation statements)

References 22 publications

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“…(4) γcij in (4) accounts for the mutual inductance of the cubic element for the 3D Cartesian coordinate given by [29].…”

Section: A Eddy-current Density On the Excited Objectmentioning

confidence: 99%

“…The analytical and numerical methods for modeling eddy currents generated in conducting materials by time-varying magnetic fields are reviewed in [28]. The distributed current source (DCS) method models the eddycurrent field induced in the non-ferrous metal [29], magnetic conductor [30], and its corresponding magnetic flux density (MFD), which considers the boundary effects of the objects [29]. The impedance method models the biological bodies exposed to time-varying electromagnetic fields in two and three dimensions using an impedance network [30], [31].…”

Section: Introductionmentioning

confidence: 99%

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Distributed Current Source Method for Modeling of Magnetic and Eddy-Current Fields in Sensing System Design

Lin

Teng

2023

IEEE Access

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This paper presents a distributed current source (DCS) method for modeling the eddy current (EC) field induced in biological or non-ferrous metallic objects in two-dimensional axisymmetric and three-dimensional Cartesian coordinates. The EC fields induced in the objects, magnetic flux density (MFD) in space, and magnetic flux (MF) of the sensing coils are formulated in state-space representation. The harmonic responses of the eddy current fields and electromotive force (EMF) of the sensing coil are formulated in closed-form solutions. The proposed DCS method is applied to design two eddy current sensing systems. The Bio-Differential Eddy Current (BD-EC) sensor distinguishes biological objects, and the Metal-Coaxial Eddy Current (MC-EC) sensor classifies non-ferrous metallic objects. The simulated EC field and EMF are numerically verified by comparing results with finite element analysis. An example is utilized to illustrate the advantage of the DCS method for calculating the MFD, MF, and EMF contributed from the induced ECD in the objects directly, and the EMF generated from each material. The proposed method, along with a prototype of BD-EC sensor, has been experimentally evaluated on sweep frequency analysis for detecting meat and bone.

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“…(4) γcij in (4) accounts for the mutual inductance of the cubic element for the 3D Cartesian coordinate given by [29].…”

Section: A Eddy-current Density On the Excited Objectmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Distributed Current Source Method for Modeling of Magnetic and Eddy-Current Fields in Sensing System Design

Lin

Teng

2023

IEEE Access

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Moment method based distributed multipoles for modeling magnetic materials in 2D and 3D magnetostatics

Lee

Kim

Son

2022

Computer Methods in Applied Mechanics and Engineering

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Distributed current source modeling method for 3D eddy current problem in magnetic conductor with discrete state-space J-φ formulation

Hao

Lee

Bai

2020

Journal of Computational Physics

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Distributed Current Source Method for Modeling Magnetic and Eddy-Current Fields Induced in Nonferrous Metallic Objects

Cited by 19 publications

References 22 publications

Distributed Current Source Method for Modeling of Magnetic and Eddy-Current Fields in Sensing System Design

Distributed Current Source Method for Modeling of Magnetic and Eddy-Current Fields in Sensing System Design

Moment method based distributed multipoles for modeling magnetic materials in 2D and 3D magnetostatics

Distributed current source modeling method for 3D eddy current problem in magnetic conductor with discrete state-space J-φ formulation

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