Title :
A PI controller based on asymmetric gossip communications for clocks synchronization in wireless sensors networks
Author :
Carli, Ruggero ; D´Elia, Edoardo ; Zampieri, Sandro
Author_Institution :
Dept. of Inf. Eng., Univ. of Padova, Padova, Italy
Abstract :
In this paper a distributed clock synchronization algorithm is proposed. The algorithm requires asymmetric gossip communications between the nodes of the network, and is based on an PI-like consensus protocol where the proportional part compensates the different clock speeds while the integral part eliminates the different clock offsets. Convergence of the algorithm is proved and analyzed with respect to the controller parameter, when the underlying graph is the complete graph. Simulations results show the effectiveness of the proposed strategy also for more general communication topologies.
Keywords :
PI control; graph theory; protocols; synchronisation; telecommunication control; telecommunication network topology; wireless sensor networks; PI controller parameter; PI-like consensus protocol; asymmetric gossip communication; clock offset; communication topology; distributed clock synchronization algorithm; graph theory; wireless sensor network node; Algorithm design and analysis; Clocks; Convergence; Oscillators; Protocols; Synchronization; Vectors;
Conference_Titel :
Decision and Control and European Control Conference (CDC-ECC), 2011 50th IEEE Conference on
Conference_Location :
Orlando, FL
Print_ISBN :
978-1-61284-800-6
Electronic_ISBN :
0743-1546
DOI :
10.1109/CDC.2011.6161101