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

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.