【摘要】 当外加适当频率和强度的周期信号时,一维等离子体驱动耗散非线性漂移波方程中的时空混沌态能够被成功控制到空间有规的层流态;通过在驱动波坐标系中将系统变换成一组在周期势中运动的耦合振子(模式),模式之间的广义相同步被认为是控制的机制之一.本文的研究则发现,足够强的外加噪声可以使控制后空间有规的系统出现时空混沌的阵发;.在逐渐增大噪声强度时,层流态被越来越多阵发的时空混沌运动打断,直至最后都变成了无规运动;.而在时空混沌的阵发阶段,相位滑移导致模式之间的广义相同步也失去了.更多还原

【Abstract】 Intermittent spatiotemporal chaos is observed when Gaussian white noise is applied after suppressing spatiotemporal chaos by a proper periodic signal in one-dimensional driven drift-wave system.By transforming the driving frame to a set of coupled oscillators moving in a periodic potential,phase synchronization between these oscillators in the controlled state,is found missing due to phase slips in the intermittent stage.Phase synchronization between these oscillators in the controlled state is regarded as a mechanism of spatiotemporal chaos control.更多还原