摘要
在系统局部采用闭环反馈来产生靶波,用靶波抑制一类激发介质Barkley模型产生的螺旋波,并对其物理机制进行了说明。其特点是不改变系统的动力学结构,通过系统的自适应耦合作用使控制过程中螺旋波和靶波实现动态竞争,达到抑制螺旋波的演化行为。数值计算表明:该方案可以有效地将系统控制到靶波,而且对于时空噪声具有一定的抗干扰性。
Based on the principle of self-adaptive coupling interaction, the local close-loop feedback scheme is used to suppress the stable spiral in the excitable media, which described by the Barkley Model. A target wave is predicted and observed under this scheme. It is found that the spiral waves can be turned to induce an expanding target wave during the dynamic evolutions under control period, or the spiral tip can be driven to the board of the system as the competition between spiral and the target wave. Our numerical simulations approve that the control scheme is effective to influence the characters of the stable spiral under right feedback coefficient and it is also robust to spatiotemporal noise.
出处
《复杂系统与复杂性科学》
EI
CSCD
2006年第1期29-35,共7页
Complex Systems and Complexity Science
基金
甘肃省自然科学基金(3ZS042-B25-021)
国家自然科学基金(10572056)
关键词
螺旋波
靶波
闭环反馈
时空噪声
spiral wave
target wave
close loop feedback
saptiotemporal noise
