Architectures for distributed controller with sub-controller communication uncertainty

Vikas Yadav, Murti V. Salapaka, Petros G. Voulgaris

Research output: Contribution to journalArticlepeer-review

5 Scopus citations

Abstract

Recent technology has led to systems with architectures that distribute the controller effort over sub-controllers to respect information flow and/or resource constraints. The associated communication uncertainty between sub-controllers partly governs the performance of the controller. The related controller synthesis methodology has to address internal stability concerns and has to incorporate the effect of communication uncertainty into the performance metric. In this article, it is demonstrated that different canonical distributed architectures derived from a centralized design can result in appreciably different performance. Architectures of information flow that result in convex optimization problems are developed and synthesis methods to incorporate robustness with respect to model uncertainty of communication channels are obtained. The efficacy of the approach is demonstrated on application problems.

Original languageEnglish (US)
Article number5532326
Pages (from-to)1765-1780
Number of pages16
JournalIEEE Transactions on Automatic Control
Volume55
Issue number8
DOIs
StatePublished - Aug 2010

Bibliographical note

Funding Information:
Manuscript received November 12, 2007; revised September 09, 2008; accepted February 18, 2010. Current version published July 30, 2010. This work was supported in part by National Science Foundation under Grants ECS-0814612 and CMMI-0814615. Recommended by Associate Editor K. H. Johansson.

Keywords

  • Banded structure
  • Youla parameter
  • communication noise
  • coprime factorization
  • distributed system
  • nested system
  • observer based controller
  • structured system
  • uncertainty

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