TY - GEN
T1 - Parametric Reconstruction of Permittivity Graded Materials Based on Electrical Capacitance Tomography
AU - Wang, C.
AU - Li, X. R.
AU - Li, W. D.
AU - Zhang, L. Y.
AU - Zhang, G. J.
N1 - Publisher Copyright:
© 2019 IEEE.
PY - 2019/4
Y1 - 2019/4
N2 - This paper presents our simulation study on the applicability of electrical capacitance tomography (ECT) for permittivity functionally graded material (varepsilon-FGM) testing. Firstly, a 2D multi-layer -FGM model with 8 electrodes is established in COMSOL software. Subsequently, the forward problem of this model is solved using finite element method (FEM), in which various permittivity distribution patterns (descending, V-shape, etc.) are involved. In addition, several ECT reconstruction methods, including linear back projection (LBP), Tikhonov regularization and Landweber algorithm, are studied for their applicability on the -FGM problems. The results show that LBP algorithm has the fastest computing speed but poor reconstruction results. Tikhonov regularization algorithm method provides acceptable results in local domain and additionally appears smoothing effect caused by L2 regularization. What's more, Landweber method shows high accuracy in reconstruction process and low sensitivity to the measurement errors and noise. This work investigates the measuring of permittivity distributions inside -FGM by using ECT method, which is helpful for the research of -FGM insulation and represents a new idea of measuring permittivity graded materials.
AB - This paper presents our simulation study on the applicability of electrical capacitance tomography (ECT) for permittivity functionally graded material (varepsilon-FGM) testing. Firstly, a 2D multi-layer -FGM model with 8 electrodes is established in COMSOL software. Subsequently, the forward problem of this model is solved using finite element method (FEM), in which various permittivity distribution patterns (descending, V-shape, etc.) are involved. In addition, several ECT reconstruction methods, including linear back projection (LBP), Tikhonov regularization and Landweber algorithm, are studied for their applicability on the -FGM problems. The results show that LBP algorithm has the fastest computing speed but poor reconstruction results. Tikhonov regularization algorithm method provides acceptable results in local domain and additionally appears smoothing effect caused by L2 regularization. What's more, Landweber method shows high accuracy in reconstruction process and low sensitivity to the measurement errors and noise. This work investigates the measuring of permittivity distributions inside -FGM by using ECT method, which is helpful for the research of -FGM insulation and represents a new idea of measuring permittivity graded materials.
UR - https://www.scopus.com/pages/publications/85067881284
U2 - 10.1109/ICEMPE.2019.8727269
DO - 10.1109/ICEMPE.2019.8727269
M3 - 会议稿件
AN - SCOPUS:85067881284
T3 - ICEMPE 2019 - 2nd International Conference on Electrical Materials and Power Equipment, Proceedings
SP - 143
EP - 146
BT - ICEMPE 2019 - 2nd International Conference on Electrical Materials and Power Equipment, Proceedings
PB - Institute of Electrical and Electronics Engineers Inc.
T2 - 2nd International Conference on Electrical Materials and Power Equipment, ICEMPE 2019
Y2 - 7 April 2019 through 10 April 2019
ER -