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Suppression of Spiral Waves by Generating Self-exciting Target Wave
Jun Ma* ,Wu-yin Jin ,Yan-long Li
Author NameAffiliation
Jun Ma* Department of Physics, Lanzhou University of Technology, Lanzhou 730050, China; Institute of Theoretical Physics, Lanzhou University, Lanzhou 730000, China; 
Wu-yin Jin College of Mechano-Electronic Engineering, Lanzhou University of Technology, Lanzhou 730050, China 
Yan-long Li Department of Physics, Lanzhou University of Technology, Lanzhou 730050, China; Institute of Theoretical Physics, Lanzhou University, Lanzhou 730000, China; 
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.
Key words:  Spiral waves, Fitzhugh-Nagumo (FHN) equation, Self-exciting target wave
FundProject:
局部激励法产生靶波来消除螺旋波
马军;*,靳伍银,李延龙;
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.
关键词:  螺旋波,Fitzhugh-Nagumo方程,靶波
DOI:10.1360/cjcp2007.20(1).53.6
分类号: