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arXiv 1408.4471math.OC
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不确定共识网络的鲁棒性研究

On the Robustness of Uncertain Consensus Networks

Daniel Zelazo, Mathias Bürger

摘要:

这项工作考虑了不确定共识网络的鲁棒性。第一组结果研究了具有负边权重的共识网络的稳定性。我们表明,如果负权边形成一个削减在图中,或任何一个单一的负边权重的幅度小于的两个事件节点之间的有效电阻的倒数,那么由此产生的网络是不稳定的。这些结果,然后应用于分析的一致性网络的鲁棒性与添加剂,但有界扰动的边缘权重。它示出的小增益条件是有关的再次削减在图中和有效电阻。对于单边缘的情况下,小增益条件也被证明是准确的。然后,将结果扩展到具有非线性耦合的共识网络。

英文摘要:

This work considers the robustness of uncertain consensus networks. The first set of results studies the stability properties of consensus networks with negative edge weights. We show that if either the negative weight edges form a cut in the graph, or any single negative edge weight has magnitude less than the inverse of the effective resistance between the two incident nodes, then the resulting network is unstable. These results are then applied to analyze the robustness properties of the consensus network with additive but bounded perturbations of the edge weights. It is shown that the small-gain condition is related again to cuts in the graph and effective resistance. For the single edge case, the small-gain condition is also shown to be exact. The results are then extended to consensus networks with non-linear couplings.

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