  This paper studies the tracking control problem of networked multi-agent
systems under both multiple networks and event-triggered mechanisms. Multiple
networks are to connect multiple agents and reference systems with
decentralized controllers to guarantee their information transmission, whereas
the event-triggered mechanisms are to reduce the information transmission via
the networks. In this paper, each agent has a network to communicate with its
controller and reference system, and all networks are independent and
asynchronous and have local event-triggered mechanisms, which are based on
local measurements and determine whether the local measurements need to be
transmitted via the corresponding network. To address this scenario, we first
implement the emulation-based approach to develop a novel hybrid model for the
tracking control of networked multi-agent systems. Next, sufficient conditions
are derived and decentralized event-triggered mechanisms are designed to
guarantee the desired tracking performance. Furthermore, the proposed approach
is applied to derive novel results for the event-triggered observer design
problem of networked multi-agent systems. Finally, two numerical examples are
presented to illustrate the validity of the developed results.
