Department of Electrical Engineering and Automation

Distributed and Networked Control Systems

We are now witnessing an explosion in networked systems: everything is connected and massive amounts of devices are required to be coordinated.
Aalto-yliopisto, liput / kuvaaja: Aino Huovio

Scientific breakthroughs enable new technology whereas at the same time, technology makes it into transformative applications (see, for example, the Internet and wireless communication systems). It is evident that the advancement of smart devices with impressive sensing, computing and control capabilities makes it possible for our cities, transportation systems, factories and living environments to become more intelligent, energy-efficient, safe and secure.  We are now witnessing an explosion in networked systems: everything is connected and massive amounts of devices are required to be coordinated. However, the overall system is distributed and a service should be delivered cooperatively, rather than by a unique provider that knows and owns all data. Many researchers and practitioners are interested in understanding the complexity and possible solution approaches, since distributed systems apply to different areas and applications and are anticipated to play a central role in the near future. 

In applications that can be characterized as distributed systems, dynamical systems are controlled or communicate and interact with other dynamical systems via a network of sensors and actuators transmitting and receiving information over a digital communication network. Real communication channels suffer from various problems (such as limited capacity, bit errors, erasures and random delays) that can affect the stability and/or performance of the whole system. Given the multidisciplinary nature of distributed systems, many studies are necessarily restricted to contributions that solve problems partially, ignoring important aspects of such systems due to modular approaches to the problem. In order to be able to deal with distributed systems, we need to better understand information, and the interplay between information and decisions. However, communication and control/decision making have traditionally been treated separately whereas recent emerging applications necessitate a more holistic approach, since communication and control are no longer independent. 

The main objective of this line or research is to develop the framework on how to treat the interplay between communications and control to solve distributed control and optimization problems arising in distributed systems and in Cyber-Physical Systems (CPS), in general. 

The group is led by Professor Themistoklis Charalambous

Group members

Latest publications

On Time Headway Selection in Platoons Under the MPF Topology in the Presence of Communication Delays

Elham Abolfazli, Bart Besselink, Themistoklis Charalambous 2021 IEEE Transactions on Intelligent Transportation Systems

Multi-agent consensus with heterogeneous time-varying input and communication delays in digraphs

Wei Jiang, Kun Liu, Themistoklis Charalambous 2021 Automatica

Reducing time headway in platoons under the MPF topology when using sensors and wireless communications

Elham Abolfazli, Bart Besselink, Themistoklis Charalambous 2021 Proceedings of the 59th IEEE Conference on Decision and Control, CDC 2020

Joint Rate Distortion Function of a Tuple of Correlated Multivariate Gaussian Sources with Individual Fidelity Criteria

Evagoras Stylianou, Charalambos D. Charalambous, Themistoklis Charalambous 2021 Proceedings of IEEE International Symposium on Information Theory, ISIT 2021

When buffer-aided relaying meets full duplex and NOMA

Nikolaos Nomikos, Themistoklis Charalambous, Demosthenes Vouyioukas, George K. Karagiannidis 2021 IEEE WIRELESS COMMUNICATIONS

LoLa4SOR

Nikolaos Nomikos, Themistoklis Charalambous, Nikolaos Pappas, Demosthenes Vouyioukas, Risto Wichman 2021 IEEE Open Journal of the Communications Society

Bandit-Based Power Control in Full-Duplex Cooperative Relay Networks

Nikolaos Nomikos, Themistoklis Charalambous, Risto Wichman 2021 ICC 2021 - IEEE International Conference on Communications, Proceedings

Consensus of General Linear Multi-Agent Systems with Heterogeneous Input and Communication Delays

Wei Jiang, Yiyang Chen, Themistoklis Charalambous 2021 IEEE Control Systems Letters

Information freshness and packet drop rate interplay in a two-user multi-access channel

Emmanouil Fountoulakis, Themistoklis Charalambous, Nikolaos Nomikos, Anthony Ephremides, Nikolaos Pappas 2021 Proceedings of IEEE Information Theory Workshop, ITW 2020
More information on our research in the Research database.
Research database
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