By Topic

Toward wireless Networked Control Systems: An experimental study on real-time communications in 802.11 WLANs

Sign In

Cookies must be enabled to login.After enabling cookies , please use refresh or reload or ctrl+f5 on the browser for the login options.

Formats Non-Member Member
$31 $13
Learn how you can qualify for the best price for this item!
Become an IEEE Member or Subscribe to
IEEE Xplore for exclusive pricing!
close button

puzzle piece

IEEE membership options for an individual and IEEE Xplore subscriptions for an organization offer the most affordable access to essential journal articles, conference papers, standards, eBooks, and eLearning courses.

Learn more about:

IEEE membership

IEEE Xplore subscriptions

4 Author(s)
Boggia, G. ; Dipt. di Elettrotec. ed Elettron., Politec. di Bari, Bari ; Camarda, P. ; Grieco, L.A. ; Zacheo, G.

Networked control systems (NCSs) exploit a packet switching network to fulfill complex control tasks without cumbersome point-to-point wiring infrastructures. But their performances are greatly influenced by time-varying packet delays and losses due to the communication system. As a consequence, real time operating systems are usually employed at NCS nodes to timely serve events scheduled by control applications. So far NCS issues have been mainly investigated assuming a wired network infrastructure. Anyway the trend is toward wireless communications. For these reasons, this paper proposes a real-time communication architecture based on the leading wireless 802.11 technology and on the real-time networking framework RTnet. The QoS offered by the proposed system, in terms of packet loss ratio and end-to-end delay, has been experimentally evaluated by varying protocol parameters. Results show that a proper tuning of system parameters can ensure robust real-time wireless communications. Thus, the present work can be considered an important step toward the design of a wireless networked control system.

Published in:

Factory Communication Systems, 2008. WFCS 2008. IEEE International Workshop on

Date of Conference:

21-23 May 2008