  This paper studies the distributed L2-gain control problem for
continuous-time large-scale systems under Round-Robin communication protocol.
In this protocol, each sub-controller obtains its own subsystem's state
information continuously, while communicating with neighbors at discrete-time
instants periodically. Distributed controllers are designed such that the
closed-loop system is exponentially stable and that the prescribed L2-gain is
satisfied. The design condition is obtained based on a time-delay approach and
given in terms of linear matrix inequalities. Finally, three numerical examples
are presented to illustrate the efficiency of the proposed scheme.
