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Distributed Output-Feedback LQG Control with Delayed Information Sharing
KTH, School of Electrical Engineering (EES), Automatic Control.
KTH, School of Electrical Engineering (EES), Automatic Control.
KTH, School of Electrical Engineering (EES), Automatic Control.
2012 (English)In: Estimation and Control of Networked Systems, Volume 3, Part 1, 2012Conference paper (Refereed)
Abstract [en]

This paper develops a controller synthesis method for distributed LQG controlproblems under output-feedback. We consider a system consisting of three interconnected linearsubsystems with a delayed information sharing structure. While the state-feedback case haspreviously been solved, the extension to output-feedback is nontrivial as the classical separationprinciple fails. To nd the optimal solution, the controller is decomposed into two independentcomponents: a centralized LQG-optimal controller under delayed state observations, and a sumof correction terms based on additional local information available to decision makers. Explicitdiscrete-time equations are derived whose solutions are the gains of the optimal controller.

Place, publisher, year, edition, pages
Keyword [en]
Coordinated control and estimation over networks, Control under communication constraints: quantization, limited bandwidth, erasure channels
National Category
Control Engineering
URN: urn:nbn:se:kth:diva-109297DOI: 10.3182/20120914-2-US-4030.00043ScopusID: 2-s2.0-84881005402OAI: diva2:581194
3rd IFAC Workshop on Distributed Estimation and Control of Networked Systems (NECSYS)

QC 20130523

Available from: 2012-12-28 Created: 2012-12-28 Last updated: 2014-01-03Bibliographically approved

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