Nonlinear Adaptive Control of a pH Process

Authors

  • Salam K. Al-Dawery
  • Hameed Ali Omran Al-Anbari
  • Duraid Fadhel Ahmed

DOI:

https://doi.org/10.31699/IJCPE.2009.1.2

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.

References

Ylostalo, T., Hyotyniemi, H. and Jutile, P., "Comparison of adaptive control methods in pH process control" ISA research triangle part C, North Caroline, 2000.

Hoyle, D. L., "Designing for pH Control", Chem. Eng., Vol. 48, No. 24,P. 121, (1976).

Orava, P. J., and Niemi, A. J., "State Model and Stability Analysis of a pH Control process", Int. J. Control, Vol. 20, No. 4,P. 557, (1974).

Wright, R. A. and Kravaris, C., “Nonlinear pH control in a CSTR “, American Control Conference Proceeding, P.21, Sep. 1986.

Jacobs, M. A., Hewkin, M. A., "Online Computer Control of pH in an Industrial Process", IEE Proc., Vol. 127, Pt. D, No. 4,P. 161, (1980).

Tae Chul Lee and Dae Ryook Yang, "Indirect Adaptive Backstepping Control of a pH Neutralization", Ind. Eng. Chem. Res., Vol. 40, P. 4102, (2001).

Gustafsson, T. K., Waller, K. V., "Dynamic Modeling and Reaction Invariant Control of pH ", Chem., Eng., Sci., Vol. 38, P. 389, (1983).

Patwardhan, R. S., Lakshminarayanan, S. and Shah, S. L., “Nonlinear Model Predictive Control Using PLS Based Hammerstein and Wiener Models”, Presented at the A. I. Ch. E. Meeting, LA, Session 217,Nov., (1997).

Yoon, S. S., Yoon, T. W., Yang, D. R. and Kang, T. S., “Indirect Adaptive Nonlinear Control of a pH Process”, IFAC 99 (China), (1999), pp. 139.

Pradeep, B. Deshpande, and Raymond, H. Ash, ” Elements of Computer Process Control”, (1981).

George, Stephanopoulos, “Chemical Process Control An Introduction to Theory and Practice”, Prentice/Hall International, Inc., (1984).

Shinskey, F. G., “pH and pION Control in Process and Waste Stream”, John Wiley & Sons, (1973).

Downloads

Published

2009-03-30

How to Cite

K. Al-Dawery, S., Ali Omran Al-Anbari, H., & Fadhel Ahmed, D. (2009). Nonlinear Adaptive Control of a pH Process. Iraqi Journal of Chemical and Petroleum Engineering, 10(1), 9-16. https://doi.org/10.31699/IJCPE.2009.1.2

Publication Dates