| 振幅耦合动态网络中相邻结点间的相同步 |
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| 引用本文： | 卢静,张荣,徐振源.振幅耦合动态网络中相邻结点间的相同步[J].海洋学报,2010,32(9):5949-5953. |
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| 作者姓名： | 卢静 张荣 徐振源 |
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| 作者单位： | 江南大学理学院,无锡 214122;江南大学理学院,无锡 214122;江南大学理学院,无锡 214122 |
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| 基金项目： | 国家自然科学基金(批准号:60875036),江南大学创新团队发展计划资助的课题. |
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| 摘 要： | 研究用适当的量化指标来刻画动态网络的相同步,为此定义了新的量化指标:相邻结点的网络平均锁相值和网络平均相频差.动态网络结点选择的是多旋转中心的Lorenz混沌振子,对Lorenz系统进行柱面坐标变换,用振幅耦合方法构造动态网络.分别对星形网络和小世界网络进行了仿真计算,结果表明随着耦合强度的增大,网络中相邻结点的两个系统之间存在相同步现象,而且相同步行为与定义的量化指标之间存在较准确的对应关系.
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| 关 键 词： | 动态网络 相同步 平均锁相值 平均相频差 |
| 收稿时间： | 9/4/2009 12:00:00 AM |
Phase synchronization between two adjacent nodes inamplitude coupled dynamical networks |
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| Lu Jing,Zhang Rong and Xu Zhen-Yuan.Phase synchronization between two adjacent nodes inamplitude coupled dynamical networks[J].Acta Oceanologica Sinica (in Chinese),2010,32(9):5949-5953. |
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| Authors: | Lu Jing Zhang Rong and Xu Zhen-Yuan |
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| Institution: | School of Scienc,Jiangnan University,Wuxi 214122,China;School of Scienc,Jiangnan University,Wuxi 214122,China;School of Scienc,Jiangnan University,Wuxi 214122,China |
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| Abstract: | The present paper aims to investigate the phase synchronization in chaotic oscillator networks by using quantitative indexes. We define two new quantitative indexes, namely the mean phase locking value and mean frequency difference of two adjacent nodes of the network. Lorenz chaotic oscillators with several rotational centers are chosen as networks nodes. We convert the original Lorenz system into the dynamics of amplitude and phase. The chaotic oscillator networks are formed via amplitude coupling. We find that for star-coupled network and small-world network the adjacent oscillation phases are locked. Moreover, phase synchronization definitely comes along with the transition of the mean phase locking value and mean frequency difference by increasing the coupling strength. |
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| Keywords: | dynamical network phase synchronization mean phase locking value mean frequency difference |
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