This Letter reports the finding of a new chaotic at tractor in simple three-dimensional autonomous system, which resembles some familiar features from both Lorenz and Rossler tractors.

This paper addresses the consensus problem of multiagent systems with a time-invariant communication topology consisting general linear node dynamics. A distributed observer-type protocol based on relative output measurements is proposed. new framework introduced to address in unified way and synchronization complex networks. Under this framework, having spanning tree can be cast into stability set matrices same low dimension. The notion region then analyzed. It shown that there exists an...

This paper reviews some main results and progress in distributed multi-agent coordination, focusing on papers published major control systems robotics journals since 2006. Distributed coordination of multiple vehicles, including unmanned aerial ground underwater has been a very active research subject studied extensively by the community. The recent this area are categorized into several directions, such as consensus, formation control, optimization, estimation. After review, short...

This letter reports the finding of a new chaotic attractor in simple three-dimensional autonomous system, which connects Lorenz and Chen's represents transition from one to other.

In the past few years, discovery of small-world and scale-free properties many natural artificial complex networks has stimulated a great deal interest in studying underlying organizing principles various networks, which led to dramatic advances this emerging active field research. The present article reviews some basic concepts, important progress, significant results current studies with emphasis on relationship between topology dynamics such networks. Some fundamental typical network...

Recently, it has been demonstrated that many large complex networks display a scale-free feature, is, their connectivity distributions are in the power-law form. In this paper, we investigate synchronization phenomenon dynamical networks. We show if coupling strength of network is greater than positive threshold, then will synchronize no matter how is. synchronizability robust against random removal nodes, but fragile to specific most highly connected nodes.

This paper considers a second-order consensus problem for multiagent systems with nonlinear dynamics and directed topologies where each agent is governed by both position velocity terms time-varying asymptotic velocity. To describe the system's ability reaching consensus, new concept about generalized algebraic connectivity defined strongly connected networks then extended to components of network containing spanning tree. Some sufficient conditions are derived in based on graph theory,...

Today, complex networks have attracted increasing attention from various fields of science and engineering. It has been demonstrated that many display synchronization phenomena. In this note, we introduce a time-varying dynamical network model. We then further investigate its phenomenon prove several theorems. Especially, show such is completely determined by the inner-coupling matrix, eigenvalues corresponding eigenvectors coupling configuration matrix network.

It is now known that the complexity of network topology has a great impact on stabilization complex dynamical networks. In this work, we study control random networks and scale-free Conditions are investigated for globally or locally stabilizing such Our strategy to apply local feedback small fraction nodes. We propose concept virtual microscopic dynamics throughout process with different pinning schemes both explain main reason why significantly less controllers required by specifically...

This paper introduces a unified chaotic system that contains the Lorenz and Chen systems as two dual at extremes of its parameter spectrum. The new represents continued transition from to is over entire spectrum key parameter. Dynamical behaviors are investigated in somewhat detail.

We investigate synchronization in a network of continuous-time dynamical systems with small-world connections. The is obtained by randomly adding small fraction connection an originally nearest-neighbor coupled network. show that, for any given coupling strength and sufficiently large number cells, the will synchronize, even if original cannot achieve under same condition.

Distributed consensus tracking is addressed in this paper for multi-agent systems with Lipschitz-type node dynamics. The main contribution of work solving the problem without assumption that topology among followers strongly connected and fixed. By using tools from M-matrix theory, a class protocols based only on relative states neighboring agents designed. appropriately constructing Lyapunov function, it proved closed-loop fixed having directed spanning tree can be achieved if feedback gain...

Symmetric block encryption schemes, designed on invertible two-dimensional chaotic maps a torus or square, prove feasible and secure for real-time image according to the commonly used criteria given in literature. In this paper, typical map of kind, namely, baker map, is further extended be three-dimensional then speed up while retaining its high degree security. The proposed algorithm described detail, along with security analysis implementation. Experimental results show that 2–3 times...