Sensitivity Matrix of an ECT System by Using FEA
Machado, VMM
Sensitivity Matrix of an ECT System by Using FEA, Proc International Compumag Society International Conference on the Computation of Electromagnetic Fields (COMPUMAG) COMPUMAG, Conference Online, Vol. IEEE Xplore, 2022 23rd International Conference on the Computation of Electromagnetic Fields (COMPUMAG), pp. 1 - 4, January, 2022.
Digital Object Identifier: 10.1109/COMPUMAG55718.2022.9827518
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Abstract
An electrical capacitance tomography (ECT) system is analyzed by a 2D FEM. Special focus is given to the sensitivity matrix evaluation in order to avoid the inherent numerical errors originated by the capacitance computation and by using the difference approximations for the Jacobian matrix. The FEM is applied to obtain the electric field. A new approach for the sensitivity matrix is developed by calculating capacitances and the Jacobian matrix using the own FEM formulation. Comparisons with published works were done.
