Consensus of networked multi-agent systems with communication delays based on the networked predictive control scheme

Abstract

The consensus problem of discrete-time networked multi-agent systems (NMASs) with a communication delay is investigated in this article, where the dynamics of agents described by discrete-time linear time-invariant systems can be either uniform or non-uniform. For the NMASs with a directed topology and constant delay, a novel protocol based on the networked predictive control scheme is proposed to compensate for communication delay actively. Using algebraic graph theories and matrix theories, necessary and/or sufficient conditions of achieving consensus are obtained, which indicates that, under the proposed protocol, the consensus is independent of the network delay and only dominated by agents' dynamics and communication topology. Meanwhile, the protocol design and consensus analysis are also presented in the case of no network delay. Simulation results are further presented to demonstrate the effectiveness of theoretical results.

Keywords:

• consensus
• networked multi-agent systems
• networked predictive control
• discrete-time linear time-invariant systems

Acknowledgements

This work was supported in part by the National Natural Science Foundation of China (61028010, 61021002). The authors also gratefully acknowledge the helpful comments and suggestions of the reviewers, which have improved the presentation.