Stabilization of Large-scale Distributed Control Systems using I/O Event-driven Control and Passivity

Authors: Han Yu, Feng Zhu, Panos J. Antsaklis

50th IEEE Conference on Decision and Control and European Control Conference (CDC-ECC) Orlando, FL, USA, December 12-15, 2011

Abstract:

This paper examines a passivity-based I/O approach
for stabilization of large scale networked control systems
(NCSs) with event-driven communication. We use a cellular
model to model the large scale NCSs and assume that each
subsystem is an output feedback passive (OFP) system. We
propose a distributed event-driven communication strategy,
where each subsystem broadcasts its output information to its
neighbors only when the subsystem’s local output novelty error
exceeds a specified threshold. Based on the proposed eventdriven
communication strategy, the studied large scale NCSs
is finite-gain L2 stable in the presence of bounded external
disturbances. The triggering condition is related to the topology
of the underlying communication graph. We also provide a
way to analyze the time interval between two consecutive
communication broadcasts(the inter-event time). Simulation
results are shown at the end.