Design of real-time feedback control of vertical growth rate on EAST
Design of real-time feedback control of vertical growth rate on EAST
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DOI：
10.1007/s41365-021-00907-w
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发表时间：
2021-07
影响因子：
2.8
通讯作者：
N. Bao;Yao Huang;B. Xiao;Q. Yuan;Zheng-ping Luo;Yuehang Wang;Shu-liang Chen
中科院分区：
文献类型：
--
作者：
N. Bao;Yao Huang;B. Xiao;Q. Yuan;Zheng-ping Luo;Yuehang Wang;Shu-liang Chen
垂直生长速率的实时反馈控制，称为伽马控制，已成功地应用于实验先进超导托卡马克（EAST）。本文提出了一种新的伽马控制方法来调节等离子体垂直不稳定性的估计量--垂直增长率。因此，可以利用伽马控制器来使托克马克等离子体远离其不稳定边界。在这项工作中，主要的开发过程包括三个步骤：（1）实时实现基于模型的垂直增长率计算，利用GPU的并行计算能力，（2）设计的等离子体形状响应的动态形状控制使用的等离子体边界的轻微修改，和（3）伽马控制算法的开发集成到EAST等离子体控制系统（PCS）。伽马控制在EAST 2019实验活动中进行了实验验证。结果表明，实时垂直增长率的时间演化与目标值一致，表明实时垂直增长率可以通过伽马控制进行调节。
Real-time feedback control of vertical growth rate, called gamma control, has been successfully applied to experimental advanced superconducting tokamak (EAST). In this paper, a new gamma control method is proposed to regulate the vertical growth rate, which is an estimator of plasma vertical instability. Thus, the gamma controller can be utilized to keep the tokamak plasma away from its unstable boundary. In this work, the main development process includes three steps: (1) real-time implementation of model-based vertical growth rate calculation, taking advantage of GPU parallel computing capability, (2) design of plasma shape response for dynamic shape control using a slight modification to the plasma boundary, and (3) development of a gamma control algorithm integrated into the EAST plasma control system (PCS). The gamma control was experimentally verified in the EAST 2019 experiment campaign. It is shown that the time evolution of the real-time vertical growth rate agrees with the target value, indicating that the real-time vertical growth rate can be regulated by gamma control.