A filter design method in disturbance observer for improvement of robustness against disturbance in time delay system

Eiichi Saito, Seiichiro Katsura

研究成果: Conference contribution

8 被引用数 (Scopus)

抄録

Control of time delay system has been researched for a long time. In time delay system, feedback including time delay sometimes makes transient response of a system worse. In the worst case, the system becomes unstable. As time delay compensation method, various methods have been proposed, for example, smith predictor, communication disturbance observer, and so on. In particular, communication disturbance observer is superior than smith predictor in terms of no using a time delay model. However, if an error in plant model exists or disturbance is applied to the system, steady-state error occurs. As disturbance rejection method, communication disturbance observer with an disturbance observer and an integrator in outer loop was proposed in conventional research. But using this method, time delay compensation and disturbance rejection can not be designed independently. Therefore, in this paper, an integrator is not used and two degrees of freedom control is conducted by communication disturbance observer and disturbance observer. For eliminating disturbance, a novel filter design method is proposed. Using proposed filter, the effect of disturbance is suppressed. Finally, the validity of the proposed method is verified by simulation results.

本文言語English
ホスト出版物のタイトルProceedings - 2012 IEEE International Symposium on Industrial Electronics, ISIE 2012
ページ1650-1655
ページ数6
DOI
出版ステータスPublished - 2012
イベント21st IEEE International Symposium on Industrial Electronics, ISIE 2012 - Hangzhou, China
継続期間: 2012 5 282012 5 31

出版物シリーズ

名前IEEE International Symposium on Industrial Electronics

Other

Other21st IEEE International Symposium on Industrial Electronics, ISIE 2012
CountryChina
CityHangzhou
Period12/5/2812/5/31

ASJC Scopus subject areas

  • Electrical and Electronic Engineering
  • Control and Systems Engineering

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