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Image reconstruction on electrical resistance tomography measurements in a settling process
Includes bibliographical references (leaves 60-62).
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| Main Author: | |
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| Other Authors: | |
| Format: | Thesis |
| Language: | English |
| Published: |
Department of Electrical Engineering
2014
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| _version_ | 1867613236121042944 |
|---|---|
| access_status_str | Open Access |
| author | Herholdt, Siegfried |
| author2 | Tapson, Jonathan |
| author_browse | Herholdt, Siegfried Tapson, Jonathan |
| author_facet | Tapson, Jonathan Herholdt, Siegfried |
| author_sort | Herholdt, Siegfried |
| collection | Thesis |
| description | Includes bibliographical references (leaves 60-62). |
| format | Thesis |
| id | oai:open.uct.ac.za:11427/6768 |
| institution | University of Cape Town (South Africa) |
| language | eng |
| last_indexed | 2026-06-10T12:32:56.154Z |
| license_str | Not specified — see source repository |
| provenance_str_mv | Harvested via OAI-PMH from UCTD — University of Cape Town Open Access Repository |
| publishDate | 2014 |
| publishDateRange | 2014 |
| publishDateSort | 2014 |
| publisher | Department of Electrical Engineering |
| publisherStr | Department of Electrical Engineering |
| record_format | dspace |
| source_str | UCTD — University of Cape Town Open Access Repository |
| spelling | oai:open.uct.ac.za:11427/6768 Image reconstruction on electrical resistance tomography measurements in a settling process Herholdt, Siegfried Tapson, Jonathan Mechanical Engineering Includes bibliographical references (leaves 60-62). This thesis uses Electrical Resistance Tomography (ERT) to measure a settling process. The measurement hardware for this system was developed during previous work carried out by the author. This research is the continuation of this work by focusing on image reconstruction from the measured data. The reconstruction algorithm attempts to find the conductivity distribution of the interior of a rig from measurements made on its boundary. The method used in this thesis is the Newton-Raphson (NR) Algorithm, which employs iterative solutions of the Finite Element Method (FEM) in order to converge to a solution for conductivity. FEM is a numerical simulation method that discretises a region into elements and performs a global optimisation or minimisation in order to arrive at a solution. The NR-method is similar in principle to Newton's method, but is designed to operate on complex data and matrix equations in multiple dimensions. This thesis discusses the methods in reasonable detail and highlights several issues, including ill-conditioning, and regularisation as a method to improve the conditioning of the data. The results contain images of successful reconstruction of a settling process. 2014-08-30T05:52:37Z 2014-08-30T05:52:37Z 2004 Thesis http://hdl.handle.net/11427/6768 eng application/pdf Department of Electrical Engineering Faculty of Engineering and the Built Environment University of Cape Town |
| spellingShingle | Mechanical Engineering Herholdt, Siegfried Image reconstruction on electrical resistance tomography measurements in a settling process |
| title | Image reconstruction on electrical resistance tomography measurements in a settling process |
| title_full | Image reconstruction on electrical resistance tomography measurements in a settling process |
| title_fullStr | Image reconstruction on electrical resistance tomography measurements in a settling process |
| title_full_unstemmed | Image reconstruction on electrical resistance tomography measurements in a settling process |
| title_short | Image reconstruction on electrical resistance tomography measurements in a settling process |
| title_sort | image reconstruction on electrical resistance tomography measurements in a settling process |
| topic | Mechanical Engineering |
| url | http://hdl.handle.net/11427/6768 |
| work_keys_str_mv | AT herholdtsiegfried imagereconstructiononelectricalresistancetomographymeasurementsinasettlingprocess |