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.

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Abstract

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)
Uncontrolled Keywords: 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: ?? TK7800-8360 ??
?? QD450-801 ??
Divisions: SCHOOL > School of Engineering and Information Technology
Depositing User: Unnamed user with email storage.bpmlib@ums.edu.my
Date Deposited: 24 Feb 2011 12:02
Last Modified: 10 Sep 2014 03:58
URI: http://eprints.ums.edu.my/id/eprint/1855

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