Model reduction techniques in tokamak modelling

In present tokamak experiments, there is the need of sufficiently detailed models describing the plasma behaviour and its electromagnetic coupling with the active and metallic structures for simulation and control design. The required level of detail yields linearized model of the system at particul...

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Bibliographic Details
Published inProceedings of the 36th IEEE Conference on Decision and Control Vol. 4; pp. 3691 - 3696 vol.4
Main Authors Beghi, A., Ciscato, D., Portone, A.
Format Conference Proceeding
LanguageEnglish
Published IEEE 1997
Subjects
Control design
Control theory
Electromagnetic coupling
Electromagnetic modeling
Modal analysis
Plasma applications
Plasma simulation
Reduced order systems
Shape control
Tokamaks
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Summary:In present tokamak experiments, there is the need of sufficiently detailed models describing the plasma behaviour and its electromagnetic coupling with the active and metallic structures for simulation and control design. The required level of detail yields linearized model of the system at particular working points of very high order, thus complicating the design of controllers of the position and shape of the plasma. In this paper, several model reduction techniques which are available from linear state-space control theory are considered with application to tokamak modelling. In particular, a technique based on selective modal analysis is proposed, and its effectiveness in approximating the overall system behaviour while retaining the physical meaning of the state variables is shown.
ISBN:0780341872
9780780341876
ISSN:0191-2216
DOI:10.1109/CDC.1997.652430