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Volume :23 Issue : 1 1996
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Parameter estimation and scheduling approach to the pH control problem
Auther : IMAD M. ALATIQI AND A. MAKBOOL
Department of Chemical Engineering, Kuwait University, PO Box 5969, Safat 13060, Kuwait
ABSTRACT
Feed back control of the pH processes is quite difficult and highly nonlinear. In this paper parameter scheduling control-strategy has been proposed, which takes care of the non-linearity, by identifying the pH process as a variable structure problem. Since the system parameters like dead time, process gain and time constants vary with acid/alkali ratio, one could parameterize the control parameters to vary accordingly.