http://www.cnr.it/ontology/cnr/individuo/prodotto/ID272721
New real-time RFX-mod feedback control algorithms in the MARTe framework (Abstract/Poster in atti di convegno)
- Type
- Label
- New real-time RFX-mod feedback control algorithms in the MARTe framework (Abstract/Poster in atti di convegno) (literal)
- Anno
- 2013-01-01T00:00:00+01:00 (literal)
- Alternative label
Chiara Piron; Gabriele Manduchi; Lionello Marrelli; Paolo Piovesan; Paolo Zanca (2013)
New real-time RFX-mod feedback control algorithms in the MARTe framework
in Joint 19th ISHW and 16th IEA-RFP workshop, Padova, Italy, September 16-20, 2013
(literal)
- Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#autori
- Chiara Piron; Gabriele Manduchi; Lionello Marrelli; Paolo Piovesan; Paolo Zanca (literal)
- Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#altreInformazioni
- http://www.igi.cnr.it/ish_rfp_ws2013/sites/default/files/attachments/poster%20list-webLinks.pdf; Poster number E3. (literal)
- Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#url
- http://www.igi.cnr.it/ish_rfp_ws2013/sites/default/files/attachments/12_BookOfAbstracts.pdf (literal)
- Note
- Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#affiliazioni
- 1 : Università degli studi di Padova, Italy /
2,3,4,5 : Consorzio RFX, Associazione EURATOM-ENEA sulla Fusione 35127 Padova, Italy. (literal)
- Titolo
- New real-time RFX-mod feedback control algorithms in the MARTe framework (literal)
- Abstract
- The RFX-mod experiment is equipped with a sophisticated magnetic feedback system that controls
simultaneously different types of MHD instabilities. Thanks to the recent introduction of the MARTe
real-time framework [1], the RFX-mod control systemhas gained new potentialities allowing a flexible
and efficient implementation of more complex and computation-demanding control schemes. These
upgraded capabilities of RFX-mod make possible to study new MHD feedback algorithms relevant to
both Reversed Field Pinch (RFP) and tokamak operation and, thus, to contribute to the scientific debate
on the optimal feedback control strategies by a systematic experimental investigation on the problem.
Recently, two new feedback schemes have been developed in RFX-mod for the radial magnetic field
sensors: the Plasma Response and the Improved CleanMode Control (CMC). The Plasma Response
algorithm uses as feedback variable the component of the radial magnetic field that is obtained by
subtracting the field produced by the active coils from the measurements. Even if this control scheme is
considered not very effective with radial sensors at least for the RWM control, as predicted by some
models developed at RFX-mod [2-3], the actual radial sensor inefficiency has never been
experimentally tested in RFX-mod and, thus, the aimof this new control option will be to validate the
model predictions. As regards the second feedback scheme, the capabilities of the new control system
have allowed to refine the sidebands computation inthe original CMC algorithm [4], where only the
copper shell is considered and a fixed set of sideband harmonics are subtracted. The new model takes
into account both the copper shell and the mechanical structure and subtracts a wider set of sideband
harmonics in the computation. These new algorithms are planned to be tested in RFX-mod in both RFP
and tokamak operation. In the latter configuration,the results will be compared to the ones obtained
using the poloidal magnetic field as feedback variable in order to investigate the effectiveness of the
different feedback schemes.
References
[1] Netò A. et al 2010 IEEE Trans. Nucl. Sci. 57
[2] Zanca P. et al 2012 Plasma Phys. Control. Fusion 54
[3] Marchiori G. et al 2012 Nucl. Fusion 52
[4] Zanca P. et al 2007 Nucl. Fusion 47 (literal)
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