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Nonlinear Adaptive Control of a pH Process

Authors: Duraid Fadhel Ahmed --- Hameed Ali Omran Al-Anbari --- Salam K. Al-Dawery
Journal: Iraqi Journal of Chemical and Petroleum Engineering المجلة العراقية للهندسة الكيمياوية وهندسة النفط ISSN: 19974884/E26180707 Year: 2009 Volume: 10 Issue: 1 Pages: 9-16
Publisher: Baghdad University جامعة بغداد

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Abstract

In this paper a nonlinear adaptive control method is presented for a pH process, which is difficult to control due to the nonlinear and uncertainties. A theoretical and experimental investigation was conducted of the dynamic behavior of neutralization process in a continuous stirred tank reactor (CSTR). The process control was implemented using different control strategies, velocity form of PI control and nonlinear adaptive control. Through simulation studies it has been shown that the estimated parameters are in good agreement with the actual values and that the proposed adaptive controller has excellent tracking and regulation performance.

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