| 束晕-混沌的非线性反馈离散控制 |
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| 引用本文： | 方锦清,周刘来,陈关荣,罗晓曙,翁甲强. 束晕-混沌的非线性反馈离散控制[J]. 强激光与粒子束, 2002, 14(6): 933-937 |
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| 作者姓名： | 方锦清 周刘来 陈关荣 罗晓曙 翁甲强 |
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| 作者单位： | 1. 中国原子能科学研究院，北京 102413; 2. 中国核工业研究生部，北京 102413；3. 中国香港城市大学 电子工程系，香港； 4．广西师范大学 物理和电子科学系，广西 桂林 541004 |
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| 基金项目： | 国家自然科学基金资助项目(19875080,70071047) |
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| 摘 要： | 基于非线性控制方法，提出了一种特殊的非线性反馈函数， 即小波反馈函数，用于离散控制强流质子束的束晕 混沌。控制后质子束的束晕强度因子很快趋于零，束均方根半径、束横向平均发射度等都减至控制前的三分之一稍多, 证明该控制方法切实有效，在工业上具有实用价值。
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| 关 键 词： | 强流质子束 束晕 混沌 非线性控制 小波反馈函数法 离散控制 |
| 文章编号： | 1001-4322(2002)06-0933-05 |
| 收稿时间： | 2002-01-10 |
Suppression of beam halo-chaos using nonlinear feedback discrete control method |
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| fang jin qing,zhou liu lai,chen guan rong,luo xiao shu,weng jia qiang. Suppression of beam halo-chaos using nonlinear feedback discrete control method[J]. High Power Laser and Particle Beams, 2002, 14(6): 933-937 |
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| Authors: | fang jin qing zhou liu lai chen guan rong luo xiao shu weng jia qiang |
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| Affiliation: | 1．China Institute of Atomic Energy, P. O. Box 275 27, Beijing 102413, China;2．China Gratuation School of Nuclear Industry, Beijing 102413, China;3. Department of Electronic Engineering, City University of Hong Kong, Tat Chee Avenue, Kowloon, Hong Kong, China； 4.Department of Physics and Electric Science, Guangxi Normal University, Guilin 541004, China |
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| Abstract: | Based on nonlinear feedback control method, wavelet based feedback controller as a especial nonlinear feedback function is designed for controlling beam halo chaos in high current accelerators of driven clean nuclear power system. In this article, PIC simulations show that suppression of beam halo chaos are realized effectively after discrete control of wavelet based feedback is applied to five kinds of the initial proton beam distributions, respectively. The beam halo strength factor is quickly reduced to zero, and other statistical physical quantities of beam halo chaos are more than doubly reduced. These performed PIC simulation results demonstrate that the developed methods are very effective for control of beam halo chaos. Potential application of the beam halo chaos control methods is discussed finally. |
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| Keywords: | high intensity proton beam heam halo chaos nonlinear feedback control wavelet based feedback discrete control |
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