The ADITYA-U tokamak (R₀ = 0.75 m, a = 0.25 m) is designed to shape plasma column in both single and double null diverter configurations. It is quite well known that sustaining a shaped plasma in tokamak requires very good plasma column position control, both horizontal and vertical. An FPGA-based proportional–integral–derivative (PID) control system has been designed and operated to achieve horizontal plasma position control in ADITYA-U tokamak. The complete system has been rigorously tested with sample signals before implementing to the ADITYA-U plasma discharges. The control system is integrated and time-synchronized with the plasma discharge operation of ADITYA –U. Furthermore, the system has been trained to take appropriate actions during the disruption or plasma failure in the tokamak operation. Detailed experimental results have been obtained by the operation of the digital PID controller. The complete design, installation, operation, tuning of the system along with all the relevant testing and operating experience of the digital PID controller for real-time horizontal plasma position control is presented in the paper.

ADITYA-U托卡马克（R ₀= 0.75 m，a = 0.25 m）设计用于在单和双无效分流器配置中对等离子体柱进行整形。众所周知，在托卡马克中保持成形的等离子体需要非常好的水平和垂直等离子体柱位置控制。设计并运行了基于FPGA的比例积分微分（PID）控制系统，以实现ADITYA-U托卡马克的水平等离子体位置控制。在实施ADITYA-U等离子放电之前，已对整个系统进行了样品信号严格测试。控制系统与ADITYA –U的等离子体放电操作集成在一起并与时间同步。此外，已经对系统进行了培训，使其在托卡马克操作的中断或等离子体故障期间采取适当的措施。通过数字PID控制器的操作已经获得了详细的实验结果。本文介绍了系统的完整设计，安装，操作，调试以及用于实时水平等离子体位置控制的数字PID控制器的所有相关测试和操作经验。