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Development of Fuzzy Logic pH controller for pH Neutralization in Waste Water Treatment Plant (WWTP)

Johar, Nor Mohd Hafiz (2011) Development of Fuzzy Logic pH controller for pH Neutralization in Waste Water Treatment Plant (WWTP). Universiti Teknologi PETRONAS. (Unpublished)

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Abstract

pH neutralization is one of the important processes in Wastewater Treatment Plant (WWTP). As WWTP used to treat eftluent and discharged water to public sewage, the right pH is important to save the enviromnent, safety, fulfill the rules and regulations and keep the plant equipment in safe condition. pH neutralization is well known fur highly non-linear characteristic with high sensitivity at the neutral region. Thus, pH neutralization is of the hardest parameter to be controlled in WWTP. From the literature review, current and most popular control strategy like PI controller produces certain range of errors. This is due to PI controller unable to compensate the non-linear characteristic of pH neutralization process. Advanced control strategy is believed to be the solution to control pH neutralization process in WWTP. Therefore, the objective of this project is to investigate and design advanced control strategy. A mathematical modeling is used to develop a plant model based on McAvoy Model. The plant model is obtained from previous researcher. From the validation of the mode~ the plant is accepted to be used throughout the project. Both conventional and advanced control strategy is developed. The development of controller is carried out in SIMULINK enviromnent. Evaluation of the controller performance is based on few parameters such as settling time, rise time and integral of absolute error. Based on the simulation results, Fuzzy Logic has given a excellent control performance compared to PI controller. Fuzzy logic is able to compensate any changes in high sensitivity in neutral region. In conclusion, advanced control strategy of Fuzzy Logic able to deal with high nonlinearity of pH neutralization process compared to conventional control strategy which is PI controller. The findings in this project will encourage other researcher to implement it fur other non-linear processes and being implemented in real time industry.

Item Type: Final Year Project
Academic Subject : Academic Department - Electrical And Electronics - Power Electronics - Power Electronics - Control Devices
Subject: T Technology > TK Electrical engineering. Electronics Nuclear engineering
Divisions: Engineering > Electrical and Electronic
Depositing User: Users 2053 not found.
Date Deposited: 08 Nov 2013 11:41
Last Modified: 25 Jan 2017 09:42
URI: http://utpedia.utp.edu.my/id/eprint/10393

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