Vertical position control on COMPASS-D

被引：23

作者：

Vyas, P

Mustafa, D

Morris, AW

机构：

[1] Univ Oxford, Dept Engn Sci, Oxford OX1 3PJ, England

[2] UKAEA Fus, Abingdon OX14 3DB, Oxon, England

来源：

FUSION TECHNOLOGY | 1998年 / 33卷 / 02期

关键词：

tokamak; vertical position control;

D O I：

10.13182/FST98-A20

中图分类号：

TL [原子能技术]; O571 [原子核物理学];

学科分类号：

0827 ; 082701 ;

摘要：

Theoretical and experimental work on the vertical position control system on the COMPASS-D tokamak is described. An analog proportional + derivative (P + D) system is currently used, and two important sources of disturbance are observed in the system. One source is 600-Hz noise from thyristor power supplies, and the other is impulselike disturbances due to edge-localized modes (ELMs). A high-order controller is developed using the H-infinity technique to reduce the effect of the 600-Hz noise. This initial design is based on a model of the plasma position system obtained from system identification. The controller is implemented on a digital signal processor and tested on COMPASS-D. The controller synthesis procedure and the experimental results are presented. Large, separated ELMs on COMPASS-D cause impulselike responses to be observed in the power amplifier and position signals. Closed formulas are given for the minimum possible peak of the impulse response of the system, which is used to find the limit of performance.

引用

页码：97 / 105

页数：9

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