Control of Plasma Instabilities and Transport

等离子体不稳定性和传输的控制

• 批准号: 9307179
• 负责人: Amiya Sen
• 金额: $ 27.62万
• 依托单位: Columbia University
• 依托单位国家: 美国
• 项目类别: Continuing Grant
• 财政年份: 1993
• 资助国家: 美国
• 起止时间: 1993-12-15 至 1997-11-30
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=9307179&HistoricalAwards=false
• 关键词: Control; Plasma; Instabilities; Transport

9307179 Sen This project proposes new efforts in the feedback control of plasma instabilities which could have relevance for a variety of plasm sources and devices used in the manufacturing industry. All plasmas are subject to instabilities and consequent fluctuations, which cause nonunforimities in the plasma, increased transport, and possibly microscopic breakup. The elimination of instabilities is sometimes imperative, but their suppression is always desirable for better performance. The proposed modulated ion beam suppressors are unique truly non-perturbing remote type controllers applicable to most plasma devices. State feedback and optimal control schemes proposed are generic control systems suitable for complex systems with many modes of instabilities. Furthermore, adaptive and neural net controllers are proposed for the challenging problem of controlling controlling plasmas with partly unknown dynamics. Lastly, the proposed study of anomalous transport (including its scaling behavior) addresses a fundamental open question in plasma science and engineering. All the proposed studies focus on common problems and propose generic solutions relevant to all plasma devices, irrespective of their appplications. ***

9307179 Sen该项目提出了在等离子体不稳定性的反馈控制方面的新努力，这些不稳定性可能与制造业中使用的各种等离子体源和设备有关。 所有的等离子体都受到不稳定性和随之而来的波动的影响，这会导致等离子体中的非均匀性，增加的传输，以及可能的微观分裂。 消除不稳定性有时是必要的，但为了更好的性能，总是需要抑制不稳定性。 所提出的调制离子束抑制器是适用于大多数等离子体设备的独特的真正的非扰动远程类型的控制器。 提出的状态反馈和最优控制方案是适用于具有多种不稳定模态的复杂系统的通用控制系统。 此外，自适应和神经网络控制器提出了具有挑战性的问题，控制控制等离子体部分未知的动态。 最后，对反常输运（包括其标度行为）的拟议研究解决了等离子体科学和工程中的一个基本开放问题。 所有拟议的研究都侧重于共同的问题，并提出了与所有等离子体设备相关的通用解决方案，无论其应用程序如何。 ***