Event-Triggered Formation Control for a Class of Uncertain Euler–Lagrange Systems: Theory and Experiment.

A distributed event-triggered protocol is proposed to deal with the time-varying formation control problem of Euler–Lagrange systems with uncertain model parameters in this research. By utilizing the small-gain theorem and matrix transformation, we show the input–output stability of the closed-loop cascade system with Euler–Lagrange dynamics. An event-triggered condition (ETC) is designed by only using the local information of each agent, which avoids the continuous communication in the event detection and excludes the Zeno behavior. Finally, the proposed methods are applied to the practical flight platform for quadrotors. The experiment using three quadrotors in the outdoor environment is demonstrated to test the effectiveness of the formation protocol. [ABSTRACT FROM AUTHOR]