A study on decentralized H∞ feedback control systems with local quantizers

Guisheng Zhai, Chen Ning, Gui Weihua

Research output: Contribution to journalArticle

5 Citations (Scopus)


In this paper, we study decentralized H∞ feedback control systems with quantized signals in local input-output (control) channels. We first assume that a decentralized output feedback controller has been designed for a multi-channel continuous-time system so that the closed-loop system is Hurwitz stable and a desired ifoo disturbance attenuation level is achieved. However, since the local measurement outputs are quantized by a general quantizer before they are passed to the controller, the system's performance is not guaranteed. For this reason, we propose a local-output-dependent strategy for updating the quantizers' parameters, so that the closed-loop system is asymptotically stable and achieves the same H∞ disturbance attenuation level. We also extend the discussion and the result to the case of multi-channel discrete-time .H∞ feedback control systems.

Original languageEnglish
Pages (from-to)137-150
Number of pages14
Issue number1
Publication statusPublished - 2009 Jun 9



  • Decentralized H∞ feedback control system
  • Matrix inequality
  • Output feedback
  • Quantization
  • Quantizer

ASJC Scopus subject areas

  • Software
  • Control and Systems Engineering
  • Theoretical Computer Science
  • Information Systems
  • Artificial Intelligence
  • Electrical and Electronic Engineering

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