震荡和间歇矩形周期驱动实现螺旋波的抑制

研究了一类激发介质Fitzhugh-Nagumo模型的螺旋波抑制问题.通过对整个系统注入弱的矩形周期信号来改变系统的动力学特性.不同周期的矩形信号驱动会导致丰富的斑图,恰当的驱动周期和信号幅度可以将系统控制到稳定均匀态,最有效的驱动周期接近系统的本征周期.进一步考虑了时空噪声对螺旋波动力学的影响,结果表明,螺旋波发生了破裂.

Suppression of spiral waves using continuous and intermittent driving with rectangular periodical signal

Suppression of spiral waves in a class of excitative medium described by Fitzhugh-Nagumo equation was investigated,and by means of putting a weak rectangular periodical signal into the whole system,the dynamic characteristics of the system were altered.The rectangular signal driving with different periods might result in a lot of rich spot patterns,and proper driving periods and signal amplitudes might make the system to be controlled into stable and homogeneous condition.The most effective driving period was adjacent to the intrinsic one of the system.When the influence of spatio-temporal noise on dynamics of spiral waves was further taken into account,it would be found that the spiral waves already was destructed.