Switched Multiagent System Consensus With Event-Triggered Output Feedback and Interval Type-2 Fuzzy Approximation

In this paper, an output feedback adaptive fuzzy leader-following event-triggered consensus (ETC) problem for switched nonlinear multi-agent systems (SNMASs) is investigated. In the considered systems, only outputs of leader and followers are measurable at sampling instants. To deal with this problem, a novel auxiliary system and observers are employed. Then, corresponding error systems are established and the consensus problem is transformed into a stabilization problem. To achieve better approximation ability for nonlinear uncertainties, the interval type-2 fuzzy logic systems (IT2FLSs) are utilized. In order to reduce the wastage of communication resources (WCRs), an adaptive fuzzy ETC protocol with a discrete-time switching threshold event-triggering mechanism (ETM) which is monitored only at sampling instants is provided. It is proved that the output feedback adaptive fuzzy ETC protocol enables the realization of the consensus target. Finally, to verify the effectiveness of the proposed scheme, the ETC protocol is applied to a practical example.