Distributed Output-Feedback LQG Control with Delayed Information Sharing
2012 (English)In: Estimation and Control of Networked Systems, Volume 3, Part 1, 2012Conference paper (Refereed)
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
Coordinated control and estimation over networks, Control under communication constraints: quantization, limited bandwidth, erasure channels
IdentifiersURN: urn:nbn:se:kth:diva-109297DOI: 10.3182/20120914-2-US-4030.00043ScopusID: 2-s2.0-84881005402OAI: oai:DiVA.org:kth-109297DiVA: diva2:581194
3rd IFAC Workshop on Distributed Estimation and Control of Networked Systems (NECSYS)
QC 201305232012-12-282012-12-282014-01-03Bibliographically approved