title: Event-triggered asynchronous intermittent communication strategy for synchronization in complex dynamical networks.
abstract: This paper presents a new framework for synchronization of complex network by introducing a mechanism of event-triggering distributed sampling information. A kind of event which avoids continuous communication between neighboring nodes is designed to drive the controller update of each node. The advantage of the event-triggering strategy is the significant decrease of the number of controller updates for synchronization task of complex networks involving embedded microprocessors with limited on-board resources. To describe the system's ability reaching synchronization, a concept about generalized algebraic connectivity is introduced for strongly connected networks and then extended to the strongly connected components of the directed network containing a directed spanning tree. Two sufficient conditions are presented to reveal the underlying relationships of corresponding parameters to reach global synchronization based on algebraic graph, matrix theory and Lyapunov control method. A positive lower bound for inter-event times is derived to guarantee the absence of Zeno behavior. Finally, a numerical simulation example is provided to demonstrate the theoretical results.
authors.affiliation: School of Electronic and Information Engineering, Southwest University, Chongqing 400715, PR China; School of Electrical and Information Engineering, The University of Sydney, Sydney 2006, Australia. Electronic address: huaqingli@hotmail.com.
authors.forename: Huaqing
authors.initials: H
authors.lastname: Li
authors.affiliation: School of Electronic and Information Engineering, Southwest University, Chongqing 400715, PR China. Electronic address: xfliao@swu.edu.cn.
authors.forename: Xiaofeng
authors.initials: X
authors.lastname: Liao
authors.affiliation: School of Electrical and Information Engineering, The University of Sydney, Sydney 2006, Australia. Electronic address: andyguochen@gmail.com.
authors.forename: Guo
authors.initials: G
authors.lastname: Chen
authors.affiliation: School of Electrical and Information Engineering, The University of Sydney, Sydney 2006, Australia; Department of Electrical and Electronic Engineering, The University of Hong Kong, Hong Kong. Electronic address: dhill@eee.hku.hk.
authors.forename: David J
authors.initials: DJ
authors.lastname: Hill
authors.affiliation: School of Electrical and Information Engineering, The University of Sydney, Sydney 2006, Australia. Electronic address: joe.dong@sydney.edu.au.
authors.forename: Zhaoyang
authors.initials: Z
authors.lastname: Dong
authors.affiliation: The Texas A & M University at Qatar, Doha, P. O. Box 23874, Qatar. Electronic address: tingwen.huang@qatar.tamu.edu.
authors.forename: Tingwen
authors.initials: T
authors.lastname: Huang
mesh_terms: D000465:Algorithms; D016571:Neural Networks, Computer; D017711:Nonlinear Dynamics
keywords: Complex networks; Directed spanning tree; Distributed control; Event-triggering; Strongly connected network; Synchronization