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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ＨＴ７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．
The current and displacement feedback control of the superconducting tokamak of iron core with double-layer thick low-temperature thick-walled copper shell was analyzed. A novel method was adopted to study the nonlinearity and time-varying of the electromagnetic parameters caused by the saturation of the iron core The equivalent forward-reverse coil model was used to replace the thick-wall copper shell, and a state equation model of HT7 superconducting tokamak plasma current and horizontal displacement feedback control was established. In order to achieve the purpose of decoupling by detecting the intermediate state variables, a tokamak plasma displacement and current feedback control system is designed, and good results have been obtained in experiments. This method greatly reduces the computational load of feedback control and improves the response speed. Making the core, thick copper shell and the strong coupling between the coil to the plasma control of the difficulties solved.