Enhancing consensus in weighted networks with coupling time-delay

We study the consensus problem in a weighted and directed network composed of self-propelled agents. The weight which quantifies the relationship between the agents is adjusted according to their state incoherence to suppress the heterogeneity in state. The proposed consensus protocol enhances the c...

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Bibliographic Details
Published in:Physica A 2012-06, Vol.391 (11), p.3061-3068
Main Authors: Ning, Bo, Ren, Quansheng, Zhao, Jianye
Format: Article
Language:English
Subjects:
Consensus
Convergence
Convergence efficiency
Coupling time-delay
Heterogeneity
Incoherence
Joining
Networks
Robustness
Statistical mechanics
Topology
Vicsek model
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Summary:We study the consensus problem in a weighted and directed network composed of self-propelled agents. The weight which quantifies the relationship between the agents is adjusted according to their state incoherence to suppress the heterogeneity in state. The proposed consensus protocol enhances the convergence efficiency of consensus greatly and has better performance than that of two other protocols. The convergence efficiency can be further improved by adjusting the parameter of this protocol. Furthermore, the robustness of the system against coupling time-delay is significantly increased. Unlike most consensus acceleration methods, no topological information is needed in our model. Networks with different stuctures are investigated to demonstrate the generality of the method. ► We study the performance of consensus in networks with mobile agents. ► Performances are enhanced by suppressing the heterogeneity in the states of the agents. ► Unlike other acceleration schemes, knowledge of topology is not needed here. ► Two other typical methods are used for comparison. ► We find that the robustness against coupling time-delay is also increased.
ISSN:0378-4371
1873-2119
DOI:10.1016/j.physa.2011.12.057