Title :
Perturbative approach to compute sensitivity matrix elements in electrical capacitance tomography (ECT) of flow systems
Author :
Marashdeh, Q. ; Teixeira, Fernando L.
Author_Institution :
Dept. of Electr. Eng., Ohio State Univ., Columbus, OH, USA
Abstract :
We describe an efficient way to compute the sensitivity matrix for electrical capacitance tomography (ECT). The sensitivity matrix is used in conjunction with a neural-network based multi-criterion optimization image reconstruction technique (NN-MOIRT) designed for 3D realtime imaging of three-phase flow systems. We adopt a perturbative approach for the calculation of the sensitivity matrix for very small pixel sizes (higher resolutions). This approach can reduce the sensitivity matrix fill time by up to two orders of magnitude in this kind of problem, when compared to traditional methods such as FEM.
Keywords :
flow visualisation; image reconstruction; image resolution; multiphase flow; neural nets; optimisation; perturbation techniques; sensitivity analysis; tomography; 3D real-time imaging; NN-MOIRT; electrical capacitance tomography; flow system ECT; image reconstruction; image resolution; multicriterion optimization; multiphase flow systems; neural-network; perturbations; pixel size; sensitivity matrix elements; sensitivity matrix fill time; three-phase flow systems; Capacitive sensors; Design optimization; Electrical capacitance tomography; Electrodes; Hardware; Image reconstruction; Image resolution; Laboratories; Lenses; Permittivity;
Conference_Titel :
Antennas and Propagation Society International Symposium, 2003. IEEE
Conference_Location :
Columbus, OH, USA
Print_ISBN :
0-7803-7846-6
DOI :
10.1109/APS.2003.1219209
