0450942 20240103211239.220160314235959.9 84959052132 000368103000010 10.1088/1742-6596/659/1/012010 10 s. E cav_un_epca*04526091742-6588BristolInstitute of Physics Publishing Ltd2015 model structure estimation tokamak plasma boundary cav_un_auth*0322774 Adaptivní systémy Department of Adaptive Systems AS AS Department of Adaptive Systems Škvára Vít UTIA-B Ústav teorie informace a automatizace AV ČR, v. v. i. cav_un_auth*0101207 Adaptivní systémy Department of Adaptive Systems AS AS Department of Adaptive Systems Šmídl Václav UTIA-B Ústav teorie informace a automatizace AV ČR, v. v. i. cav_un_auth*0107889 Tokamak Tokamak TOK TOK Tokamak Urban Jakub UFP-V Ústav fyziky plazmatu AV ČR, v. v. i. http://library.utia.cas.cz/separaty/2015/AS/skvara-0450942.pdf Control of the plasma field in the tokamak requires reliable estimation of the plasma boundary. The plasma boundary is given by a complex mathematical model and the only available measurements are responses of induction coils around the plasma. For the purpose of boundary estimation the model can be reduced to simple linear regression with potentially infinitely many elements. The number of elements must be selected manually and this choice significantly influences the resulting shape. In this paper, we investigate the use of formal model structure estimation techniques for the problem. Specifically, we formulate a sparse least squares estimator using the automatic relevance principle. The resulting algorithm is a repetitive evaluation of the least squares problem which could be computed in real time. Performance of the resulting algorithm is illustrated on simulated data and evaluated with respect to a more detailed and computationally costly model FREEBIE. cav_un_auth*0322775 12th European Workshop on Advanced Control and Diagnosis (ACD 2015) 19.11.2015 Pilsen CZ BC 2016 RVO:67985556 RVO:61389021 http://hdl.handle.net/11104/0252659 1 S 0.245 Q3 Q4 2015 84959052132 SCOPUS 000368103000010 WOS cav_un_epca*0452609 Journal of Physics: Conference Series 1742-6588 Č. 012010 Bristol Institute of Physics Publishing Ltd 2015