Definition and performance analysis of a control system for m=2, n=1 MHD modes in JET via computer simulation

Author

D´Antona, Gabriele

Author_Institution

Dipartimento di Elettrotecnica, Politecnico di Milano, Italy

Volume

41

Issue

1

fYear

1994

fDate

2/1/1994 12:00:00 AM

Firstpage

216

Lastpage

220

Abstract

The evolution in amplitude and frequency of MHD rotating resistive modes on the q=2 surface is a limit for the regime of stable operation in tokamaks. It is possible to control the growth and phase of these modes by applying an external magnetic field. This paper presents the performance analysis via computer simulation of a digital real time vector-control system based on reduced state feedback (mode amplitude and frequency). Despite the high noise level superimposed on the whole set of state variables and model parameters as well as the fast dynamic of the mode evolution, the simulation has shown how the mode can be controlled using a discrete control system built by a system of DSPs working in parallel

Keywords

Tokamak devices; computerised control; control system analysis computing; digital simulation; feedback; nuclear engineering computing; parallel processing; plasma instability; plasma magnetohydrodynamics; plasma toroidal confinement; real-time systems; JET; MHD modes; computer simulation; digital real time vector-control system; mode amplitude; mode frequency; reduced state feedback; rotating resistive modes; tokamak; Computer simulation; Control systems; Frequency; Magnetic fields; Magnetohydrodynamics; Noise level; Performance analysis; Real time systems; State feedback; Tokamaks;

fLanguage

English

Journal_Title

Nuclear Science, IEEE Transactions on

Publisher

ieee

ISSN

0018-9499

Type

jour

DOI

10.1109/23.281492

Filename

281492