Decentralized control for discrete-time LTI systems: Lower bound analysis of H performance achievable via LTI controllers

Yoshio Ebihara, Noboru Sebe

Research output: Chapter in Book/Report/Conference proceedingConference contribution

1 Citation (Scopus)


This paper is concerned with the decentralized H controller synthesis problem for discrete-time linear time-invariant (LTI) systems. In spite of intensive research efforts over the last several decades, this problem is believed to be non-convex and still outstanding in general. Therefore most existing approaches resort to heuristic optimization algorithms that do not allow us to draw any definite conclusion on the quality of the designed controllers. To get around this difficult situation, in this paper, we propose convex optimization procedures for computing lower bounds of the H performance that is achievable via decentralized LTI controllers of any order. In particular, we show that sharpened lower bounds can be obtained by making good use of structures of the LTI plant typically observed in the decentralized control setting. We illustrate via numerical examples that these lower bounds are indeed useful to ensure the good quality of decentralized controllers designed by a heuristic optimization.

Original languageEnglish
Title of host publicationProceedings of the 2010 American Control Conference, ACC 2010
Number of pages6
Publication statusPublished - Oct 15 2010
Externally publishedYes
Event2010 American Control Conference, ACC 2010 - Baltimore, MD, United States
Duration: Jun 30 2010Jul 2 2010

Publication series

NameProceedings of the 2010 American Control Conference, ACC 2010


Conference2010 American Control Conference, ACC 2010
Country/TerritoryUnited States
CityBaltimore, MD

All Science Journal Classification (ASJC) codes

  • Control and Systems Engineering


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