A novel event-triggered extended state observer for networked control systems subjected to external disturbances

Yang Yu, Yuan Yuan, Hongjiu Yang, Huaping Liu

Research output: Contribution to journalArticlepeer-review

25 Scopus citations

Abstract

In this paper, the event-triggered-based state estimation problem is investigated for a class of nonlinear networked control systems subjected to external disturbances. A novel event-triggered extended state observer (ESO) is utilized to estimate the so-called total disturbance, and an output predictor is adopted for the proposed ESO between two consecutive transmission instants. It is also worth pointing out that, in the newly proposed ESO, an event-triggered mechanism is adopted to update the measurement signal so as to save the communication resource. The sufficient conditions are provided such that the estimation error dynamics is exponentially ultimately bounded. Furthermore, it is proven that the Zeno behavior does not exist for the event-triggering rules. A number of numerical simulations are conducted to verify the validity of the theoretical results.

Original languageEnglish
Pages (from-to)2026-2040
Number of pages15
JournalInternational Journal of Robust and Nonlinear Control
Volume29
Issue number6
DOIs
StatePublished - 1 Apr 2019

Keywords

  • event-triggered scheme
  • extended state observer
  • networked control systems
  • Zeno behavior

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