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Journal of Automated Methods and Management in Chemistry
Volume 2005 (2005), Issue 2, Pages 50-54

Mathematical Modeling of Perfect Decoupled Control System and Its Application: A Reverse Osmosis Desalination Industrial-Scale Unit

1Chemical Engineering Department, University of West Indies, St. Augustine, Trinidad and Tobago
2Project Engineering Department, J. C. Engineering, Los Palos Grandes, Caracas, Venezuela

Received 5 February 2004; Accepted 20 February 2004

Copyright © 2005 Hindawi Publishing Corporation. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.


This short paper outlines the computer simulation using real data of a decoupled control system for a desalination unit. The control strategy incorporated a perfect decoupled controller for the control of the fresh water flow and conductivity. The model was estimated using real data and empirical tools instead of mass balances. The success is demonstrated in the reduction of wide fluctuations in the variables of the process and decreasing of the sensibility to the changes of pressure and/or pH and allows predicting problems of quality of water and waste of energy in the future.