Semi-Global Output Consensus for Discrete-Time Switching Networked Systems Subject to Input Saturation and External Disturbances

• Published in: IEEE transactions on cybernetics Vol. 49; no. 11; pp. 3934 - 3945
• Main Authors: Su, Housheng, Ye, Yanyan, Qiu, Yuan, Cao, Yang, Chen, Michael Z. Q.
• Format: Journal Article
• Language: English
• Published: United States IEEE 01.11.2019; The Institute of Electrical and Electronics Engineers, Inc. (IEEE)
• Subjects: Actuators; Algorithms; Biological system modeling; Computer simulation; Consensus algorithm; Discrete time systems; Disturbances; External disturbances; input saturation; Multi-agent systems; Multiagent systems; multiagent systems (MASs); output consensus; Riccati equation; Saturation; State feedback; Subsystems; Switches; switching networks; Switching theory; Synchronism; Synchronization
• ISSN: 2168-2267; 2168-2275; 2168-2275
• DOI: 10.1109/TCYB.2018.2859436

The semi-global output consensus problem for multiagent systems depicted by discrete-time dynamics subject to external disturbances and input saturation over switching networks is investigated in this paper. Assume that only a small part of subsystems have directly received the output of the exosystem. The distributed consensus algorithms are proposed by adopting the low-gain state feedback and the modified algebraic Riccati equation. Then, the outputs of all subsystems can reach synchronization asymptotically with those of the exosystem by using the proposed consensus protocols on some preconditions. Both the connected switching networks and the jointly connected switching networks are considered for the semi-global output consensus problem, respectively. Some numerical simulation results are shown to validate the theoretical analysis.