Identifiability Of Links And Nodes In Multi-Agent Systems Under The Agreement Protocol

In this paper, the question of identifying various links and nodes in the network based on the observed agent dynamics is addressed. The focus is on a multi-agent network that evolves under the linear agreement protocol. The results help determine if various components of the network are distinguishable from each other, based on the choice of initial conditions and the observed output responses. Identifiability of links and nodes are studied separately, and in each case, the role of symmetries in the network information flow graph are analyzed. Examples are provided to elucidate the results.