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Encoder-decoder design for event-triggered feedback control over bandlimited channels
KTH, School of Electrical Engineering (EES), Communication Theory. KTH, School of Electrical Engineering (EES), Centres, ACCESS Linnaeus Centre.
KTH, School of Electrical Engineering (EES), Communication Theory. KTH, School of Electrical Engineering (EES), Centres, ACCESS Linnaeus Centre.ORCID iD: 0000-0002-7926-5081
KTH, School of Electrical Engineering (EES), Automatic Control. KTH, School of Electrical Engineering (EES), Centres, ACCESS Linnaeus Centre.ORCID iD: 0000-0001-9940-5929
2006 (English)In: 2006 American Control Conference, IEEE , 2006, Vol. 1-12, 4183-4188 p.Conference paper (Refereed)
Abstract [en]

Bandwidth limitations and energy constraints set severe restrictions on the design of control systems that utilize wireless sensor and actuator networks. It is common in these systems that a sensor node needs not be continuously monitored, but communicates to the controller only at certain instances when it detects a disturbance event. In this paper, such a scenario is studied and particular emphasis is on efficient utilization of the shared communication resources. Encoder-decoder design for an event-based control system with the plant affected by pulse disturbances is considered. A new iterative procedure is proposed which can jointly optimize encoder-decoder pairs for a certainty equivalent controller. The goal is to minimize a design criterion, in particular, a linear quadratic cost over a finite horizon. The algorithm leads to a feasible design of time-varying non-uniform encoder-decoder pairs. Numerical results demonstrate significant improvements in performance compared to a system using uniform quantization.

Place, publisher, year, edition, pages
IEEE , 2006. Vol. 1-12, 4183-4188 p.
, Proceedings of the American Control Conference, ISSN 0743-1619
Keyword [en]
Actuators, Bandwidth, Communication system control, Control systems, Costs, Event detection, Feedback control, Monitoring, Sensor systems, Wireless sensor networks
National Category
Control Engineering
URN: urn:nbn:se:kth:diva-26571DOI: 10.1109/ACC.2006.1657375ISI: 000241666308021ScopusID: 2-s2.0-34047196188ISBN: 1-4244-0209-3OAI: diva2:380457
American Control Conference 2006 Minneapolis, MN, JUN 14-16, 2006
© 2006 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 20101221Available from: 2010-12-21 Created: 2010-11-25 Last updated: 2012-02-17Bibliographically approved

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Bao, LeiSkoglund, MikaelJohansson, Karl Henrik
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