Real-time data acquisition and feedback control using Linux Intel computers
Real-time data acquisition and feedback control using Linux Intel computers
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DOI：
10.1016/j.fusengdes.2006.04.008
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发表时间：
2006-07
影响因子：
1.7
通讯作者：
B. Penaflor;J. Ferron;D. Piglowski;Robert D. Johnson;M. Walker
中科院分区：
文献类型：
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作者：
B. Penaflor;J. Ferron;D. Piglowski;Robert D. Johnson;M. Walker
本文介绍了 DIII-D 编程人员将基于 Linux 的 Intel 计算硬件应用于实时数据采集和反馈控制系统的经验。由于托卡马克聚变实验中磁约束等离子体的高度动态和不稳定的性质，实时数据采集和反馈控制系统在所有主要托卡马克中常规使用。在 DIII-D，等离子体是使用称为数字等离子体控制系统 (PCS) 的实时应用程序创建和维持的。在每次实验期间，PCS 定期从数百个诊断信号中采样数据，并将这些数据提供给软件中实现的控制算法。这些算法计算发送到影响等离子体性能的各种执行器的必要命令。 PCS 由一组机架式 Intel Xeon 计算机系统组成，运行专门为满足等离子体实验的实时性能需求而定制的内部定制版本的 Linux 操作系统。本文更详细地描述了实时计算硬件和定制开发的软件，包括最近在 PCS 中利用配备双 Intel Xeon 的计算机的工作。
This paper describes the experiences of the DIII-D programming staff in adapting Linux based Intel computing hardware for use in real-time data acquisition and feedback control systems. Due to the highly dynamic and unstable nature of magnetically confined plasmas in tokamak fusion experiments, real-time data acquisition and feedback control systems are in routine use with all major tokamaks. At DIII-D, plasmas are created and sustained using a real-time application known as the digital plasma control system (PCS). During each experiment, the PCS periodically samples data from hundreds of diagnostic signals and provides these data to control algorithms implemented in software. These algorithms compute the necessary commands to send to various actuators that affect plasma performance. The PCS consists of a group of rack mounted Intel Xeon computer systems running an in-house customized version of the Linux operating system tailored specifically to meet the real-time performance needs of the plasma experiments. This paper provides a more detailed description of the real-time computing hardware and custom developed software, including recent work to utilize dual Intel Xeon equipped computers within the PCS.