Finite-Time Fault Estimation and Tolerant Control for Nonlinear Interconnected Distributed Parameter Systems with Markovian Switching Channels

Xiaona Song, Jingtao Man, Shuai Song, Choon Ki Ahn

Research output: Contribution to journalArticlepeer-review

Abstract

This work investigates the problems of decentralized fault estimation within a finite-time interval (FTI) and fault-tolerant control for nonlinear interconnected distributed parameter systems under the situation of unpredictable faults. First, the fault estimator using interconnected information is designed to estimate the occurred faults over an FTI. Second, the designed fault-tolerant controller has a non-fragile characteristic and can make the considered system satisfy the prescribed performance index. Additionally, this article considers a real scenario where multiple switching channels exist in the network and supposes that the channel switching follows a Markovian switching law with discrete state. Furthermore, by establishing a global Lyapunov functional based on graph theory and employing the canonical Bessel-Legendre inequality method, the final results that are less conservative can be obtained reasonably. Finally, the feasibility, practicability and superiority of the main results are illustrated through three simulations.

Original languageEnglish
Pages (from-to)1347-1359
Number of pages13
JournalIEEE Transactions on Circuits and Systems I: Regular Papers
Volume69
Issue number3
DOIs
Publication statusPublished - 2022 Mar 1

Keywords

  • Fault estimation and tolerant control
  • Finite-time interval
  • Global Lyapunov functional
  • Markovian switching channels
  • Nonlinear interconnected distributed parameter systems

ASJC Scopus subject areas

  • Electrical and Electronic Engineering

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