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The Centre of Research Excellence for Advanced Cooperative Systems (ACROSS) is an interdepartmental research centre at the University of Zagreb Faculty of Electrical Engineering and Computing. The centre performs research in cooperative systems related to robotics, networked embedded systems and renewable energy systems. Its establishment and operation is funded by the European FP-7 Capacities "Research Potential" program [285939, FP7-REGPOT-2011-1].

Published: 2013-04-18 at 11:11
Edited: 2013-04-18 at 11:11
Colloquium "Decentralized Output...

The Centre of Research Excellence for Advanced Cooperative Systems (ACROSS) invites you to the colloquium

"Decentralized Output Synchronization via Self-Triggered Communication in Wireless Sensor Networks"

held by dipl. ing. Vana Jeličić ? and dr. sc. Domagoj Tolić

Colloquium details
Title Decentralized Output Synchronization via Self-Triggered Communication in Wireless Sensor Networks
Speakers dipl. ing. Vana Jeličić, dr. sc. Domagoj Tolić
Date 19. 4. 2013. 14:15 - 15:15
Location Faculty of Electrical Engineering and Computing, TCR

More about the speakers and colloquium can be found in the detailed news content.


A classical problem to tackle in Wireless Sensor Networks (WSNs), in order to extend the nodes' lifetime, is to reduce idle listening of the communication units. A particular application that relies on WSNs is  decentralized output synchronization of heterogeneous linear systems. Motivated by a decrease in energy consumption of wireless nodes, we develop a self-triggered output broadcasting policy for the interconnected systems. Self-triggering reduces energy consumption of embedded processors, communication and sensing units by exchanging and processing up-to-date information only when necessary. In other words, based on the currently available (but outdated) measurements of the neighbors' outputs and network topology, a mechanism triggering when to broadcast new measurements and update the control inputs is provided. Broadcasting time instants adapt to the current communication topology. For a fixed topology, our broadcasting policy yields global exponential output synchronization, and Lp-stable output synchronization in the presence of disturbances. Preliminary experimental results on consensus control of single-integrator dynamics utilizing Texas Instruments eZ430-RF2500 wireless sensor nodes will be presented. Finally, future research avenues will be discussed. 

Mirko Sužnjević
News list

ACROSS project has received research funding from the Seventh Framework Programme of the European Union (Grant Agreement No. 285939 FP7-REGPOT-2011-1).


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