HT-7铁芯超导托卡马克等离子体电流和水平位移多变量反馈控制

对有双层低温厚壁铜壳的铁芯超导托卡马克等离子体电流和位移反馈控制进行了分析，采用一种新颖的方法对铁芯饱和而引起的电磁参数非线性和时变性进行了处理，用等效正反串线圈模型代替厚壁铜壳，从而建立了HT-7超导托卡马克等离子体电流和水平位移反馈控制状态方程模型.并采用了检测中间状态变量进行补偿而达到解耦的目的，设计出了托卡马克等离子体位移和电流反馈控制系统，在实验中得到了很好的结果.该方法大大减少了反馈控制的计算工作量并提高了响应速度.使得铁芯、厚壁铜壳与线圈之间的强耦合给等离子体控制带来的困难迎刃而解. 关键词：

MULTI-VARIABLE FEED-BACK CONTROL OF PLASMA CURRENT AND HORIZONTAL POSITION IN HT-7 SUPER-CONDUCTIVE TOKAMAK

In the analysis of HT-7 superconductive tokamak which consists of iron core, thick copper shell and multi-coupling coils system, the electromagnetic parameters are linearized by a novel method; the copper shell is replaced by an equivalent pair of coils in series-opposing; and the multi-coupling is compensated by an intermediate state variable. As a result, the plasma control equation can be set up and solved more simply and easily. The feed-back control system has been designed and rather good results were obtained in experiment. This feed-back control system has high response speed, less computing time and is easy to carry out.