Abstract: In neutralization process,pH neutralization might be very difficult to control due to its highly nonlinear nature.A fuzzy-Controller can be used for controlling a broad range of uncertain systems in the presence of strong disturbances,and still exhibits excellent adaptability and robustness.The paper address the problem of the utilization of a fuzzy-controller for the abstract nonlinear process mentioned above.Simulation studies for pH neutralization substantiate that the fuzzy controller can provide much better set-point tracking and disturbance rejection than traditional controllers.

Key words: pH , neutralization process;fuzzy controller;simulation