Improvement in steady-state accuracy of time-delayed control systems with communication disturbance observer by low-frequency model error feedback

Atsushi Suzuki, Kouhei Ohnishi

Research output: Contribution to journalArticle

7 Citations (Scopus)

Abstract

This paper proposes a method to improve the steady-state accuracy of time-delayed control systems with a communication disturbance observer (CDOB) by low-frequency model error feedback. The advantageous feature of time delay compensation by the CDOB is that it can be utilized without a delay time model. However, the CDOB needs a model of controlled system, and the model error occurs as the steady-state error. To solve this problem, this paper proposes model error feedback only in the low-frequency area. The proposed method achieves both high robust stability and steady state accuracy.

Original languageEnglish
Pages (from-to)861-867
Number of pages7
Journalieej transactions on industry applications
Volume133
Issue number9
DOIs
Publication statusPublished - 2013 Oct 7

Keywords

  • Communication disturbance observer (CDOB)
  • Low frequency model error feedback
  • Model error
  • Robust stability
  • Steday state error
  • Time delay system

ASJC Scopus subject areas

  • Industrial and Manufacturing Engineering
  • Electrical and Electronic Engineering

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