PhD Seminar Course on

Distributed Function Calculation in Control Systems

Cagliari, May 7, 2012



This activity was made possible by the "Visiting Professors 2011" program of the University of Cagliari, sponsored by the Autonomous Region of Sardinia

Instructor: Prof. Christoforos Hadjicostis
University of Cyprus
Duration: 2 hours
Schedule: Monday May 7, 2012 - h: 11:00 am
Venue: Meeting Room (DIEE, Stand B)
Topics: This talk addresses aspects of the problem of distributed coordination and regulation in control systems. This type of systems have sustained tremendous growth rates recently due to the proliferation of digital and networking technologies, and include a variety of sensor/actuator networks, such as electric power distribution systems (e.g., smart grids), robotic networks, and transportation systems of various sorts. In the talk, we consider a distributed system whose components posses some initial values and can locally exchange information in an iterative fashion via interconnections that form an arbitrary communication topology. We focus on developing distributed strategies for computing linear functions (such as the average) of the initial values of the components using linear iterative updates. These are iterative updates in which each node calculates a new value based on a linear combination that involves the node's previous value and the previous values of its neighbors. We describe strategies for the nodes to asymptotically reach consensus to the average of their initial values, including cases where the underlying communication topology is possibly directed and/or time-varying, and cases where the communication links might undergo arbitrary but bounded delays.
Organizer: Carla Seatzu
Dep. of Electrical and Electronic Engineering
University of Cagliari, Italy
Email: seatzu@diee.unica.it