Realization of Networked Control Systems on Ethernet with Varied Time Delay

Chieng Liang Lai*, Pau-Lo Hsu

*Corresponding author for this work

Research output: Chapter in Book/Report/Conference proceedingChapterpeer-review

6 Scopus citations

Abstract

An online delay estimation algorithm is adopted for the adaptive Smith predictor in the networked control systems (NCS) design under the significant delay time. However, the Smith predictor is sensitive to parameter uncertainties within the system model and time delay. The quantitative feedback theory (QFT) controller is suitable to cope with parameter uncertainties of the Smith predictor in this paper; moreover, a template expressed in phase and gain for the QFT design has been constructed by considering the bounded variations with the time delay and the external loading. Therefore, the adaptive Smith predictor control scheme with QFT controller provides better tolerance to parameter uncertainties. Both simulation and experimental results on AC servo motor with both the hybrid controller area network (CAN) bus and the Ethernet network have proven the feasibility and improved performance of the proposed NCS.
Original languageEnglish
Title of host publication2010 IEEE INTERNATIONAL CONFERENCE ON SYSTEMS, MAN AND CYBERNETICS (SMC 2010)
PublisherIEEE
ISBN (Print)978-1-4244-6588-0
StatePublished - 2010
Event IEEE International Conference on Systems, Man and Cybernetics - Istanbul, TURKEY, Istanbul, Turkey
Duration: 10 Oct 201013 Oct 2010

Publication series

NameIEEE International Conference on Systems Man and Cybernetics Conference Proceedings
PublisherIEEE
ISSN (Print)1062-922X

Conference

Conference IEEE International Conference on Systems, Man and Cybernetics
CountryTurkey
CityIstanbul
Period10/10/1013/10/10

Keywords

  • Networked control systems (NCS); adaptive Smith predictor; quantitative feedback theory (QFT); varied time delay

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