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Adaptive controller placement for wireless sensor-actuator networks with erasure channels
Univ of Newcastle, Australien.
Uppsala University, Disciplinary Domain of Science and Technology, Technology, Department of Engineering Sciences, Signals and Systems Group.
2013 (English)In: Automatica, ISSN 0005-1098, Vol. 49, no 11, 3458-3466 p.Article in journal (Refereed) Published
Abstract [en]

Wireless sensor-actuator networks offer flexibility for control design. One novel element which may arise in networks with multiple nodes is that the role of some nodes does not need to be fixed. In particular, there is no need to pre-allocate which nodes assume controller functions and which ones merely relay data. We present a flexible architecture for networked control using multiple nodes connected in series over analog erasure channels without acknowledgments. The control architecture proposed adapts to changes in network conditions, by allowing the role played by individual nodes to depend upon transmission outcomes. We adopt stochastic models for transmission outcomes and characterize the distribution of controller location and the covariance of system states. Simulation results illustrate that the proposed architecture has the potential to give better performance than limiting control calculations to be carried out at a fixed node.

Place, publisher, year, edition, pages
2013. Vol. 49, no 11, 3458-3466 p.
Keyword [en]
Wireless sensor-actuator networks, Packet dropouts
National Category
Engineering and Technology
Research subject
Electrical Engineering with specialization in Signal Processing
URN: urn:nbn:se:uu:diva-211766DOI: 10.1016/j.automatica.2013.08.024ISI: 000326553300035OAI: oai:DiVA.org:uu-211766DiVA: diva2:669117
Available from: 2013-12-03 Created: 2013-12-02 Last updated: 2014-10-23Bibliographically approved

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