Fuzzy PID controller to control the pH neutralization process

Tiong Ghee, Nio and Sivakumar Kumaresan and Chung Fan', Liau (2002) Fuzzy PID controller to control the pH neutralization process. In: Conference on Research and Development Proceedings, 16-17 July 2002, Shah Alam, Malaysia.

Full text not available from this repository.


Research and experiments were conducted to build a fuzzy controlled PID controller to control a pH neutralization process. Process modeling and control was performed chiefly with the SIMULINK software in MATLAB based on the McAvoy model. A gain scheduling method was studied to aid in tuning the P control of the PID. A PID controller was designed first, and then a fuzzy Kc controller was built using a Mamdani type fuzzy inference system (FIS) with the controller settings based on the results obtained from gain scheduling testing. Next, the Sugeno FIS was used to create a fuzzy τ1 controller to complement the fuzzy P controller. The compiled fuzzy PI controller was then tested on servo and regulator problems. The servo test used a uniform random number generator to simulate set points between pH=3 to pH= 11 and the simulation was run over 100 s. The regulator test was run at ±5% of acid flow, Fa. The result of the servo test was a near perfect response with no overshoot or oscillatory responses. The response time was very quick with practically no lag time. The result of the regulator test was a response that changed in tandem with the disturbances but was limited to a narrow range of <0.01 pH units.

Item Type: Conference or Workshop Item (UNSPECIFIED)
Keyword: MATLAB, Mamdani type fuzzy inference system, McAvoy model, SIMULINK software, Sugeno fuzzy inference system, continuously stirred tank reactor, Fuzzy PID controller, Gain scheduling method, pH neutralization process control , Process modeling, Regulator test, Response time, Servo test, Uniform random number generator
Subjects: T Technology > TK Electrical engineering. Electronics Nuclear engineering > TK1-9971 Electrical engineering. Electronics. Nuclear engineering > TK7800-8360 Electronics
Q Science > QD Chemistry > QD1-999 Chemistry > QD450-801 Physical and theoretical chemistry
Department: SCHOOL > School of Engineering and Information Technology
Depositing User: ADMIN ADMIN
Date Deposited: 24 Feb 2011 20:02
Last Modified: 10 Sep 2014 11:58
URI: https://eprints.ums.edu.my/id/eprint/1855

Actions (login required)

View Item View Item