An optimal observer design for 2-inertia system via ILQ design method

Atsushi Tokunaga, Masashi Nakamura, Hiroshi Takami, Tetsuya Okamoto

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

4 Citations (Scopus)

Abstract

This paper presents a novel optimal observer for speed control in 2-inertia dynamic system such as a large scale rolling mill, coupled with flexible shaft which has resonant torsional oscillation. For suppressing oscillation and reducing disturbance load torque, we introduce a full-order observer with concept of Kalman filter on a basis of inverse linear quadratic (ILQ) design method, including disturbance observer. In this paper, the ILQ design method improved by polynomial pole assignment gives an analytical optimal gain, and makes the errors of outputs converge to zero in steady-state. The proposed observer enables to suppress vibration and to control at high precise speed control in the 2-inertia system in spite of the quick speed response.

Original languageEnglish
Title of host publication2012 IEEE Industry Applications Society Annual Meeting, IAS 2012
DOIs
Publication statusPublished - 2012 Dec 1
Event2012 IEEE Industry Applications Society Annual Meeting, IAS 2012 - Las Vegas, NV, United States
Duration: 2012 Oct 72012 Oct 11

Publication series

NameConference Record - IAS Annual Meeting (IEEE Industry Applications Society)
ISSN (Print)0197-2618

Conference

Conference2012 IEEE Industry Applications Society Annual Meeting, IAS 2012
CountryUnited States
CityLas Vegas, NV
Period12/10/712/10/11

Keywords

  • 2-inertia system
  • Disturbance observer
  • Full-order observer
  • ILQ design method
  • Optimal observer
  • State feedback control
  • Torsional system

ASJC Scopus subject areas

  • Control and Systems Engineering
  • Industrial and Manufacturing Engineering
  • Electrical and Electronic Engineering

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  • Cite this

    Tokunaga, A., Nakamura, M., Takami, H., & Okamoto, T. (2012). An optimal observer design for 2-inertia system via ILQ design method. In 2012 IEEE Industry Applications Society Annual Meeting, IAS 2012 [6374005] (Conference Record - IAS Annual Meeting (IEEE Industry Applications Society)). https://doi.org/10.1109/IAS.2012.6374005