<RESEARCH REPORT>B5-a CONTROL OF HORIZONTAL PLASMA POSITION BY FEEDFORWARD-FEEDBACK SYSTEM WITH DIGITAL COMPUTER IN JIPP T-II TOKAMAK
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概要
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In the resistive shell tokamak, JIPP T-II, the control of horizontal plasma position is successfully carried out by calculating the equilibrium equation in a thin resistive shell from a large-aspect-ratio approximation every 1.39 msec with a digital computer. The iron core effect also is taken account by a simple form in the equation. The required strength of vertical field is determined by the control-demand composed of a "feedback" term with proportion-Integration-Differentiation correction (PID-controller) and "feedforward" one in proportion to plasma current. The experimental results have a satisfactory agreement with the analysis of control system. By this control system, the horizontal displacement has been suppressed within 1 cm throughout a discharge for the plasma of 15 cm-radius with high density and low q(a)-value obtained by the second current rise and strong gas puffing.
- 核融合科学研究所の論文
著者
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Toi K.
Research Information Center Institute Of Plasma Physics Nagoya University
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Toi K.
Institute of Plasma Physics, Nagoya University
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TANAHASHI S.
Institute of Plasma Physics, Nagoya University
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Tanaka S.
Biol. Lab. Nippon Med. Schl.
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Sato K.
Research Information Center Institute Of Plasma Physics Nagoya University
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Itoh S.
Institute For Applied Mechanics Kyushu University
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Miyamoto K.
Dept. Biol. Fac. Sci. Tokyo Metro. Univ.
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Sakurai K.
Dept. Biol. Fac. Sci. Tokyo Metro. Univ.
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Sakurai K.
Institute of Plasma Physics, Nagoya University
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Matsuura K.
Institute of Plasma Physics Nagoya University
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ITOH S.
Natl. Inst. Basic Biol.
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Sato K.
Research Information Center Institute Of Plasma Physics Nagoya University:tokai University
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