Journal
INVERSE PROBLEMS
Volume 31, Issue 4, Pages -Publisher
IOP PUBLISHING LTD
DOI: 10.1088/0266-5611/31/4/045004
Keywords
State estimation; inverse problems; electrical impedance tomography
Categories
Funding
- Fondecyt [1130682]
- Fondap [15130015]
- Academy of Finland Project [250215]
- Finnish Centre of Excellence in Inverse Problems Research
- Academy of Finland (AKA) [250215] Funding Source: Academy of Finland (AKA)
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Solving electrical impedance tomography (EIT) inverse problems in real-time is a challenging task due to their dimension, the nonlinearities involved and the fact that they are ill-posed. Thus, efficient algorithms are required to address the application of tomographic technologies in process industry. In practical applications the EIT inverse problem is often linearized for fast and robust reconstruction. The aim of this paper is to analyse the solution of linearized EIT inverse problem from the perspective of a state estimation problem, providing links between regularization, observability and convergence of the algorithms. In addition, also a new way to define the fictitious outputs is proposed, leading to observers with fewer parameters than with the approach widely used in literature. Simulation of EIT examples illustrate the main ideas and algorithmic improvements of the proposed approaches.
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