外加偏高斯噪声控制时空混沌

CONTROLLING SPATIOTEMPORAL CHAOS WITH EXTERNAL BIAS GAUSS NOISE

以一维驱动非线性漂移波方程为模型,通过对驱动波坐标系中扰动波能量和傅里叶模式相位进行模拟,研究了不同强度的外加偏高斯噪声信号对时空混沌进行非反馈控制的结果.研究发现,强度较小的偏高斯噪声不能将时空混沌成功控制,而较大强度的偏高斯噪声反而能够将时空混沌抑制到一种涨落较小的振荡运动.

Bias Gauss noise is applied to control spatiotemporal chaos in one-dimensional driven drift-wave system. It is found that the noise with lower strength can not control spatiotemporal chaos succesfully. However, the noise with higher strength can suppress spatiotemporal chaos to a kind of oscillation varying within a lesser range.