Sökning: WFRF:(Olofsson K. Erik J.) >
Vector dither exper...
Vector dither experiment design and direct parametric identification of reversed-field pinch normal modes
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- Olofsson, K. Erik J. (författare)
- KTH,Fusionsplasmafysik
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- Hjalmarsson, Håkan, 1962- (författare)
- KTH,Reglerteknik,ACCESS Linnaeus Centre,System Identification Group
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- Rojas, Cristian R., 1980- (författare)
- KTH,Reglerteknik,ACCESS Linnaeus Centre,System Identification Group
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- Brunsell, Per (författare)
- KTH,Fusionsplasmafysik
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- Drake, James Robert (författare)
- KTH,Fusionsplasmafysik
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(creator_code:org_t)
- 2009
- 2009
- Engelska.
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Ingår i: Proceedings of the IEEE Conference on Decision and Control. - 9781424438716 ; , s. 1348-1353
- Relaterad länk:
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https://urn.kb.se/re...
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https://doi.org/10.1...
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Abstract
Ämnesord
Stäng
- Magnetic confinement fusion (MCF) research ambitiously endeavours to develop a major future energy source. MCF power plant designs, typically some variation on the tokamak, unfortunately suffer from magnetohydrodynamic (MHD) instabilities. One unstable mode is known as the resistive-wall mode (RWM) which is a macroscopically global type of perturbation that can degrade or even terminate the plasma in the reactor if not stabilized. In this work the topic of RWMs is studied for the reversed-field pinch (RFP), another toroidal MCF concept, similar to the tokamak. The problem of identifying RWM dynamics during closed-loop operation is tackled by letting physics-based parametric modeling join forces with convex programming experiment design. An established MHD normal modes description is assessed for the RFP by synthesizing a multivariable dither signal where spatial fourier modes are spectrally shaped, with regard to real experiment constraints, to yield minimum variance parameter estimates in the prediction-error framework. The dithering is applied to the real RFP plant EXTRAP-T2R, and experimental MHD spectra are obtained by an automated procedure.
Ämnesord
- TEKNIK OCH TEKNOLOGIER -- Elektroteknik och elektronik -- Reglerteknik (hsv//swe)
- ENGINEERING AND TECHNOLOGY -- Electrical Engineering, Electronic Engineering, Information Engineering -- Control Engineering (hsv//eng)
Nyckelord
- Automated procedures
- Closed-loop operation
- Convex programming
- Dither signals
- Energy source
- Experiment design
- Fourier modes
- Automatic control
- Reglerteknik
- SRA - ICT
- SRA - Informations- och kommunikationsteknik
Publikations- och innehållstyp
- ref (ämneskategori)
- kon (ämneskategori)
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