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Zbl 1125.34031
Lu, Jianquan; Cao, Jinde
Adaptive synchronization in tree-like dynamical networks.
(English)
[J] Nonlinear Anal., Real World Appl. 8, No. 4, 1252-1260 (2007). ISSN 1468-1218

The authors investigate the synchronization in three-like dynamical networks, which can be described by the following system of coupled ordinary differential equations $$\dot x_i = f(x_i) + c \sum_{j=1}^{N} a_{ij} \Gamma x_j, \quad i=1,\dots, N,$$ where $f(x_i)=(f_1(x_i),\dots,f_n(x_i))^T$: $\Bbb R^n\to \Bbb R^n$, $x_i=(x_{i1},\dots,x_{in})\in R^n$ are the state variables of the nodes, $c>0$ is the coupling strength, $\Gamma$ is a diagonal matrix. The structure of the network is described by the coupling matrix $A=(a_{ij})$. The main result reports the possibility of finding a coupling $c(x)$ such that the system will be completely synchronized, i.e. $\Vert x_i(t)-x_j(t)\Vert \to 0$ for $t\to \infty$, any $i,j$ and all initial conditions.
[Sergiy Yanchuk (Berlin)]
MSC 2000:
*34D05 Asymptotic stability of ODE
34C15 Nonlinear oscillations of solutions of ODE
34H05 ODE in connection with control problems
34D23 Global stability

Keywords: synchronization; thee-like network; adaptive control

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