Abstract
The paper deals with the identification of plasma equilibrium reconstruction in D-shaped tokamaks on the base of plasma external magnetic measurements. The methods of such identification are directed to increase their speed of response when plasma discharges are relatively short, like in the spherical Globus-M2 tokamak (Ioffe Inst., St. Petersburg, Russia). The new approach is first to apply to the plasma discharges data the off-line equilibrium reconstruction algorithm based on the Picard iterations, and obtain the gaps between the plasma boundary and the first wall, and the second is to apply new identification methods to the gap values, producing plasma shape models operating in real time. The inputs for on-line robust identification algorithms are the measurements of magnetic fluxes on magnetic loops, plasma current, and currents in the poloidal field coils measured by the Rogowski loops. The novel on-line high-performance identification algorithms are designed on the base of (i) full-order observer synthesized by linear matrix inequality (LMI) methodology, (ii) static matrix obtained by the least square technique, and (iii) deep neural network. The robust observer is constructed on the base of the LPV plant models which have the novelty that the state vector contains the gaps which are estimated by the observer, using input and output signals. The results of the simulation of the identification systems on the base of experimental data of the Globus-M2 tokamak are presented.
Funder
Russian Science Foundation
Subject
General Mathematics,Engineering (miscellaneous),Computer Science (miscellaneous)
Reference36 articles.
1. Tokamaks;Wesson,2004
2. Synthesis and simulation of a two-level magnetic control system for tokamak-reactor plasma
3. Upravleniye Plazmoi v Eksperimentalnikh Termoyadernikh Ustanovkakh: Adptivniye Avtokolebatelniye i Robustniye Sistemi Upravleniya [Plasma Control in Experimental Thermonuclear Installations: Adaptive Auto-Oscillation and Robust Control Systems];Mitrishkin,2016
4. Metodi i Sistemi Magnitnogo Upravleniya Plazmoi v Tokamakakh [Methods and Systems of Plasma Magnetic Control in Tokamaks];Mitrishkin,2020
5. Stabilization of unstable vertical position of plasma in T-15 tokamak. I
Cited by
4 articles.
订阅此论文施引文献
订阅此论文施引文献,注册后可以免费订阅5篇论文的施引文献,订阅后可以查看论文全部施引文献