Abstract
This work has focused on the development of a Low-Cost Fuzzy Gain Schedule Neutralization Control System. The implementation of a typical Neutralization System, with an appropriate monitoring, control and data acquisition has been successfully implemented, as well as the controller. For the Fuzzy Controller project, the system dynamics has been identified and the empirical models parameters were calculated. As inputs it has been used the Auxiliary Variable, defined with the linguist terms as Acid, Neutral and Alkaline by three trapezoidal membership functions, as well as the control error and the change in the control error, both defined by five triangular membership functions. The controller outputs were defined for the Acid and Alkali pumps by 18 triangular membership functions and it was defined a set of 50 fuzzy rules. The development of the control system considered in this paper reveals an attractive industrial application, representing an application for water consumption reduction in industry.
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