A modified structure for robustness enhancement of time-delay systems with communication disturbance observer

Kenji Natori, Kouhei Ohnishi

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

4 Citations (Scopus)

Abstract

This paper presents a modified structure for robustness enhancement of time-delay systems with communication disturbance observer (CDOB). A time-delay compensation method based on network disturbance (ND) concept and CDOB has been proposed and applied to various time-delay systems. The effectiveness is the same as Smith predictor. In addition, it works even when the value of time delay is unknown, since the method compensates time-delay effects without time-delay models. However, it has a problem of the robustness on system model errors. In case there are model errors of the system, serious steady-state error occurs. In this paper, a modified structure that enhances the robustness of time-delay systems with CDOB is proposed. The structure enhances the robustness and achieves zero steady-state error. The effectiveness of the proposed structure is presented by a case study of a time-delayed motor control system. In addition, this paper addresses stability and transient characteristics of the proposed structure.

Original languageEnglish
Title of host publicationIECON Proceedings (Industrial Electronics Conference)
Pages2969-2974
Number of pages6
DOIs
Publication statusPublished - 2009
Event35th Annual Conference of the IEEE Industrial Electronics Society, IECON 2009 - Porto, Portugal
Duration: 2009 Nov 32009 Nov 5

Other

Other35th Annual Conference of the IEEE Industrial Electronics Society, IECON 2009
CountryPortugal
CityPorto
Period09/11/309/11/5

Fingerprint

Time delay
Communication
Control systems

ASJC Scopus subject areas

  • Control and Systems Engineering
  • Electrical and Electronic Engineering

Cite this

Natori, K., & Ohnishi, K. (2009). A modified structure for robustness enhancement of time-delay systems with communication disturbance observer. In IECON Proceedings (Industrial Electronics Conference) (pp. 2969-2974). [5415382] https://doi.org/10.1109/IECON.2009.5415382

A modified structure for robustness enhancement of time-delay systems with communication disturbance observer. / Natori, Kenji; Ohnishi, Kouhei.

IECON Proceedings (Industrial Electronics Conference). 2009. p. 2969-2974 5415382.

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

Natori, K & Ohnishi, K 2009, A modified structure for robustness enhancement of time-delay systems with communication disturbance observer. in IECON Proceedings (Industrial Electronics Conference)., 5415382, pp. 2969-2974, 35th Annual Conference of the IEEE Industrial Electronics Society, IECON 2009, Porto, Portugal, 09/11/3. https://doi.org/10.1109/IECON.2009.5415382
Natori K, Ohnishi K. A modified structure for robustness enhancement of time-delay systems with communication disturbance observer. In IECON Proceedings (Industrial Electronics Conference). 2009. p. 2969-2974. 5415382 https://doi.org/10.1109/IECON.2009.5415382
Natori, Kenji ; Ohnishi, Kouhei. / A modified structure for robustness enhancement of time-delay systems with communication disturbance observer. IECON Proceedings (Industrial Electronics Conference). 2009. pp. 2969-2974
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