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Self-triggered control over wireless sensor and actuator networks
KTH, School of Electrical Engineering (EES), Automatic Control. KTH, School of Electrical Engineering (EES), Centres, ACCESS Linnaeus Centre.
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2011 (English)Conference paper (Refereed)
Abstract [en]

Energy and communication bandwidth are scarce resources in wireless sensor and actuator networks. Recent research efforts considered the control of physical processes over such resource limited networks. Most of the existing literature addressing this topic is dedicated to periodically sampled control loops and scheduled communication, because it simplifies the analysis and the implementation. We propose instead an aperiodic network transmission scheme that reduces the number of transmission instances for the sensor and control nodes, thereby reducing energy consumption and increasing network lifetime, without sacrificing control performance. As an added benefit, we show the possibility of dynamically allocating the network bandwidth based on the physical system state and the available resources. In order to allow timely, reliable, and energy efficient communication, we propose a new co-design framework for the wireless medium access control, compatible with the IEEE 802.15.4 standard. Furthermore, we validate our approach in a real wireless networked control implementation.

Place, publisher, year, edition, pages
IEEE , 2011. 1-9 p.
Keyword [en]
Actuators, IEEE 802.15 Standards, Protocols, Wireless networks, Wireless sensor networks
National Category
Control Engineering
URN: urn:nbn:se:kth:diva-79924DOI: 10.1109/DCOSS.2011.5982135ISI: 000299427700001ScopusID: 2-s2.0-80052513040ISBN: 978-1-4577-0512-0OAI: diva2:495849
International Conference on Distributed Computing in Sensor Systems and Workshops (DCOSS), 2011
© 2011 IEEE. Personal use of this material is permitted. Permission from IEEE must be obtained for all other uses, in any current or future media, including reprinting/republishing this material for advertising or promotional purposes, creating new collective works, for resale or redistribution to servers or lists, or reuse of any copyrighted component of this work in other works. Qc 20120214Available from: 2012-02-14 Created: 2012-02-09 Last updated: 2012-04-03Bibliographically approved

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