A Plasma Shape Identification with Magnetic Analysis for the Real-time Control on QUEST

カテゴリ: 論文誌(論文単位)

グループ名: 【A】基礎・材料・共通部門

発行日: 2012/07/01

タイトル(英語): A Plasma Shape Identification with Magnetic Analysis for the Real-time Control on QUEST

著者名: Makoto Hasegawa (Research Institute for Applied Mechanics, Kyushu University), Kazuo Nakamura (Research Institute for Applied Mechanics, Kyushu University), Kazutoshi Tokunaga (Research Institute for Applied Mechanics, Kyushu University), Hideki Zushi (Re

著者名(英語): Makoto Hasegawa (Research Institute for Applied Mechanics, Kyushu University), Kazuo Nakamura (Research Institute for Applied Mechanics, Kyushu University), Kazutoshi Tokunaga (Research Institute for Applied Mechanics, Kyushu University), Hideki Zushi (Research Institute for Applied Mechanics, Kyushu University), Kazuaki Hanada (Research Institute for Applied Mechanics, Kyushu University), Akihide Fujisawa (Research Institute for Applied Mechanics, Kyushu University), Hiroshi Idei (Research Institute for Applied Mechanics, Kyushu University), Shoji Kawasaki (Research Institute for Applied Mechanics, Kyushu University), Hisatoshi Nakashima (Research Institute for Applied Mechanics, Kyushu University), Aki Higashijima (Research Institute for Applied Mechanics, Kyushu University)

キーワード: plasma shape，eddy currents，downhill simplex method，real-time，QUEST

要約(英語): In order to identify plasma shape, there is a way to represent the plasma current profile with several parameters, and adjust these parameters with least-square technique in order for calculated magnetic values to accord with measured ones. Here, the plasma shape parameters such as minor radius, elongation, and triangularity are chosen as the fitting parameters to represent plasma shape more directly, and the applicability to the control of the plasma shape are described by evaluating its calculation time. In order to find minimum of an objective function with least-square technique, two methods are compared, namely a linear approximation method and a downhill simplex method. While high accuracies of the measured magnetic signals are required, the good reproducibility is obtained, and the plasma shape identification can be done within several milliseconds in both methods.

本誌: 電気学会論文誌A（基礎・材料・共通部門誌） Vol.132 No.7 （2012） 特集：The 16th International Workshop on Spherical Tori 2011

本誌掲載ページ: 477-484 p

原稿種別: 論文／英語

電子版へのリンク: https://www.jstage.jst.go.jp/article/ieejfms/132/7/132_477/_article/-char/ja/