| 局部激励法产生靶波来消除螺旋波 |
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| 引用本文： | 马军;,靳伍银,李延龙;.局部激励法产生靶波来消除螺旋波[J].化学物理学报,2007,20(1):53-58. |
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| 作者姓名： | 马军; 靳伍银 李延龙; |
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| 作者单位： | 兰州理工大学物理系，兰州730050; 兰州大学理论物理研究所，兰州730000;,兰州理工大学机电学院，兰州730050,兰州理工大学物理系，兰州730050; 兰州大学理论物理研究所，兰州730000; |
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| 摘 要： | 提出采用局部激励方法产生靶波来消除抑制激发介质中的漂移(和稳定的)螺旋波．通过在系统中任意选择一个格点进行采样，将采样格点信号反馈到系统局部区域可产生一个稳定的靶波．数值计算表明：该方法可以消除均匀和非均匀介质(扩散系数随时间或空间变化)中的螺旋波(稳定旋转的螺旋波和漂移的螺旋波)，并且对于时空噪声具有一定的抗干扰性．
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| 关 键 词： | 螺旋波，Fitzhugh-Nagumo方程，靶波 |
| 收稿时间： | 2006/4/26 0:00:00 |
Suppression of Spiral Waves by Generating Self-exciting Target Wave |
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| Jun M,Wu-yin Jin and Yan-long Li.Suppression of Spiral Waves by Generating Self-exciting Target Wave[J].Chinese Journal of Chemical Physics,2007,20(1):53-58. |
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| Authors: | Jun M Wu-yin Jin and Yan-long Li |
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| Institution: | Department of Physics, Lanzhou University of Technology, Lanzhou 730050, China; Institute of Theoretical Physics, Lanzhou University, Lanzhou 730000, China;,College of Mechano-Electronic Engineering, Lanzhou University of Technology, Lanzhou 730050, China,Department of Physics, Lanzhou University of Technology, Lanzhou 730050, China; Institute of Theoretical Physics, Lanzhou University, Lanzhou 730000, China; |
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| Abstract: | A new scheme is proposed to suppress stable and meandering spiral waves in excitable media by generating a self-exciting target wave in a local area. An arbitrary selected grid in the media is sampled, and the sampled signal is fed back into a local area in the media. Numerical simulation results confirm its effectiveness when the scheme is introduced into anisotropic (the diffusion coefficient is perturbed vs. time and/or space) and isotropic media. Results also show the scheme's robustness to spatiotemporal noise. |
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| Keywords: | Spiral waves Fitzhugh-Nagumo (FHN) equation Self-exciting target wave |
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