Consensus of interconnected systems via event‐triggered control with different cyber‐physical topologies

• Published in: International journal of robust and nonlinear control 2023-08, Vol.33 (12), p.6950-6968
• Main Authors: Yu, Guan‐Nan, Xiao, Jiang‐Wen, Liu, Xiao‐Kang, Zeng, Ze‐Hong, Wang, Yan‐Wu
• Format: Article
• Language: English
• Subjects: consensus; Control methods; cyber‐physical framework; Event triggered control; interconnected system; jointly connected topology; Network topologies
• ISSN: 1049-8923; 1099-1239
• DOI: 10.1002/rnc.6733

In this paper, the consensus problem for a class of interconnected systems with different cyber‐physical topologies is investigated. A two‐layer control framework is proposed where two different connections exist among the systems in physical and cyber layers, respectively. The former directly reflects the physical coupling among systems, while the latter uses the states' information transferred by communication channels to generate control. The physical and cyber topologies are undirected and not required to be connected. An event‐triggered protocol based on cyber local sampled information is designed with no need to solve any matrix equation or inequality. Theoretical sufficient conditions for consensus are derived in terms of algebraic inequality and Zeno behavior is excluded. A novel expandable construction scheme is proposed to construct switching topologies for cyber layer. Numerical simulation and comparison show the effectiveness of the proposed control method and the advantage on saving communication network constructions.