Adaptive control of the top blown oxygen converter process considering temperature and unknown external disturbances

Author

Sokolov, Boris M. ; Shepeljavyi, Alexander I. ; Medvedev, Alexander

Author_Institution

Dept. of Math. & Mech., St. Petersburg State Univ., Russia

Volume

1

fYear

2003

fDate

20-22 Aug. 2003

Firstpage

323

Abstract

The paper considers the control of the top blown oxygen converter process by exploiting the equations of the process in order to compensate for unknown disturbances. These disturbances are caused by additives dissolving in the converter. Necessity to take into account temperature of reaction has resulted in increase of number of the equations in the in the mathematical model of process. Thus the speed of reaction now depends on the metal temperature. The dissipation region of the controller is evaluated. A nonlinear observer is developed for estimating the metal analysis in real time. It is shown that the observer is asymptotically stable and a region of attraction, where the estimation error converges, is derived. Adaptive control of this process is constructed.

Keywords

adaptive control; adaptive estimation; asymptotic stability; liquid metals; nonlinear control systems; observers; oxygen; process control; steel industry; O₂; adaptive control; asymptotic stability; compensation; controller; dissipation region; error estimation; metal analysis; metal temperature; nonlinear observer; real time estimation; top blown oxygen converter process; unknown external disturbances; Adaptive control; Equations; Information technology; Manganese; Mathematics; Oxygen; Silicon; Steel; Temperature control; Temperature dependence;

fLanguage

English

Publisher

ieee

Conference_Titel

Physics and Control, 2003. Proceedings. 2003 International Conference

Print_ISBN

0-7803-7939-X

Type

conf

DOI

10.1109/PHYCON.2003.1236841

Filename

1236841