Title
Convergence speed in distributed consensus over dynamically switching random networks
Abstract
Characterizing convergence speed is one of the most important research challenges in the design of distributed consensus algorithms for networked multi-agent systems. In this paper, we consider a group of agents that communicate via a dynamically switching random information network. Each link in the network, which represents the directed/undirected information flow between any ordered/unordered pair of agents, could be subject to failure with a certain probability. Hence we model the information flow using dynamically switching random graphs. We characterize the convergence speed for the distributed discrete-time consensus algorithm over a variety of random networks with arbitrary weights. In particular, we propose the asymptotic and per-step (mean square) convergence factors as measures of the convergence speed and derive the exact value for the per-step (mean square) convergence factor. Numerical examples are also given to illustrate our theoretical results.
Year
DOI
Venue
2009
10.1016/j.automatica.2009.01.021
Automatica
Keywords
Field
DocType
Consensus,Convergence speed,Stochastic stability,Convergence factor,Multi-agent coordination,Random networks
Consensus,Convergence (routing),Convergence of random variables,Unordered pair,Mathematical optimization,Random graph,Compact convergence,Distributed algorithm,Discrete time and continuous time,Mathematics
Journal
Volume
Issue
ISSN
45
6
0005-1098
Citations 
PageRank 
References 
31
1.43
20
Authors
2
Name
Order
Citations
PageRank
Jing Zhou132754.75
Qian Wang218412.32