Journal
INTERNATIONAL JOURNAL OF ROBUST AND NONLINEAR CONTROL
Volume 24, Issue 16, Pages 2560-2573Publisher
WILEY
DOI: 10.1002/rnc.3010
Keywords
multi-agent systems; second-order consensus; sampled data; unavailable velocity information; directed spanning tree
Funding
- National Natural Science Foundation of China [61074043, 61174137]
- Specialized Research Fund for the Doctoral Program of Higher Education [20113219110026]
- 333 Project [BRA2011143]
- Qing Lan Project
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This paper deals with the consensus problem of second-order multi-agent systems with sampled data. Because of the unavailable velocity information, consensus problem is studied only by using the sampled position information. The final consensus states of multi-agent system are given. And a necessary and sufficient consensus condition is provided, which depends on the parameters of sampling interval, eigenvalues of Laplacian matrix, and coupling strengths. Then, the case that both the sampled position and velocity information can be obtained is discussed. On the basis of introducing a time-varying piecewise-continuous delay and proposing a novel time-dependent Lyapunov functional, the sufficient consensus condition is presented, and the upper bound of sampling interval can be estimated. Simulation examples are provided finally to demonstrate the effectiveness of the proposed design methods. Copyright (c) 2013 John Wiley & Sons, Ltd.
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