A fuzzy logic controller of two-position pump with time-delay in heavy metal precipitation process

Research output: Chapter in Book/Report/Conference proceedingConference contribution

7 Citations (Scopus)

Abstract

The process control of pH in wastewater neutralisation and metal precipitation processes has been identified difficult to achieve via a normal conventional PID controller due to its non-linear and time-varying characteristics. Recently, controlling pH via fuzzy logic system that makes use of uncertain information and valuable human experience, has gained new attention and been proved efficient in controlling pH. Normally, in fuzzy logic controller, the speed of variable speed pumps are varied according to fuzzy rule base, in order to control the addition of caustic solution in metal hydroxide precipitation. However, in Malaysia, most of the small and medium scale industries are still using traditional instruments of on-off pumps (also known as two-position pumps) in controlling their processes. The management are reluctant to purchase new variable speed pumps due to the high cost constraint. The aim of this study was to develop a low-cost and reliable fuzzy logic pH controller, by making use of the traditional pumps. A set of fuzzy rules was developed based on two controller inputs, error (e) and change of error (e). Instead of pump speed (u), time-delay in switching on or off the pumps is used as the controller output in order to control the addition of caustic solution. The fuzzy logic controller successfully increased the pH of acidic wastewater to pH 9 and maintained this pH for all runs regardless the initial metal concentration of the wastewater. The results proved that the fuzzy concept is still applicable and yet, the present instruments can be used.

Original languageEnglish
Title of host publicationProceedings of the 2011 International Conference on Pattern Analysis and Intelligent Robotics, ICPAIR 2011
Pages171-176
Number of pages6
Volume1
DOIs
Publication statusPublished - 2011
Event2011 International Conference on Pattern Analysis and Intelligent Robotics, ICPAIR 2011 - Putrajaya
Duration: 28 Jun 201129 Jun 2011

Other

Other2011 International Conference on Pattern Analysis and Intelligent Robotics, ICPAIR 2011
CityPutrajaya
Period28/6/1129/6/11

Fingerprint

Heavy metals
Fuzzy logic
Time delay
Pumps
Controllers
Wastewater
Fuzzy rules
Metals
Process control
Costs
Industry

Keywords

  • fuzzy logic
  • heavy metal
  • precipitation
  • time-delay
  • two position pump

ASJC Scopus subject areas

  • Artificial Intelligence
  • Computer Vision and Pattern Recognition
  • Human-Computer Interaction

Cite this

Sheikh Abdullah, S. R., Mustafa, M. M., Rahman, R. A., Imm, T. O. S., & Abu Hasan, H. (2011). A fuzzy logic controller of two-position pump with time-delay in heavy metal precipitation process. In Proceedings of the 2011 International Conference on Pattern Analysis and Intelligent Robotics, ICPAIR 2011 (Vol. 1, pp. 171-176). [5976890] https://doi.org/10.1109/ICPAIR.2011.5976890

A fuzzy logic controller of two-position pump with time-delay in heavy metal precipitation process. / Sheikh Abdullah, Siti Rozaimah; Mustafa, Mohd. Marzuki; Rahman, Rakmi Abdul; Imm, Tracy Ong Suan; Abu Hasan, Hassimi.

Proceedings of the 2011 International Conference on Pattern Analysis and Intelligent Robotics, ICPAIR 2011. Vol. 1 2011. p. 171-176 5976890.

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Sheikh Abdullah, SR, Mustafa, MM, Rahman, RA, Imm, TOS & Abu Hasan, H 2011, A fuzzy logic controller of two-position pump with time-delay in heavy metal precipitation process. in Proceedings of the 2011 International Conference on Pattern Analysis and Intelligent Robotics, ICPAIR 2011. vol. 1, 5976890, pp. 171-176, 2011 International Conference on Pattern Analysis and Intelligent Robotics, ICPAIR 2011, Putrajaya, 28/6/11. https://doi.org/10.1109/ICPAIR.2011.5976890
Sheikh Abdullah SR, Mustafa MM, Rahman RA, Imm TOS, Abu Hasan H. A fuzzy logic controller of two-position pump with time-delay in heavy metal precipitation process. In Proceedings of the 2011 International Conference on Pattern Analysis and Intelligent Robotics, ICPAIR 2011. Vol. 1. 2011. p. 171-176. 5976890 https://doi.org/10.1109/ICPAIR.2011.5976890
Sheikh Abdullah, Siti Rozaimah ; Mustafa, Mohd. Marzuki ; Rahman, Rakmi Abdul ; Imm, Tracy Ong Suan ; Abu Hasan, Hassimi. / A fuzzy logic controller of two-position pump with time-delay in heavy metal precipitation process. Proceedings of the 2011 International Conference on Pattern Analysis and Intelligent Robotics, ICPAIR 2011. Vol. 1 2011. pp. 171-176
@inproceedings{a4abc8c16615449382ccfe9de00ef4a2,
title = "A fuzzy logic controller of two-position pump with time-delay in heavy metal precipitation process",
abstract = "The process control of pH in wastewater neutralisation and metal precipitation processes has been identified difficult to achieve via a normal conventional PID controller due to its non-linear and time-varying characteristics. Recently, controlling pH via fuzzy logic system that makes use of uncertain information and valuable human experience, has gained new attention and been proved efficient in controlling pH. Normally, in fuzzy logic controller, the speed of variable speed pumps are varied according to fuzzy rule base, in order to control the addition of caustic solution in metal hydroxide precipitation. However, in Malaysia, most of the small and medium scale industries are still using traditional instruments of on-off pumps (also known as two-position pumps) in controlling their processes. The management are reluctant to purchase new variable speed pumps due to the high cost constraint. The aim of this study was to develop a low-cost and reliable fuzzy logic pH controller, by making use of the traditional pumps. A set of fuzzy rules was developed based on two controller inputs, error (e) and change of error (e). Instead of pump speed (u), time-delay in switching on or off the pumps is used as the controller output in order to control the addition of caustic solution. The fuzzy logic controller successfully increased the pH of acidic wastewater to pH 9 and maintained this pH for all runs regardless the initial metal concentration of the wastewater. The results proved that the fuzzy concept is still applicable and yet, the present instruments can be used.",
keywords = "fuzzy logic, heavy metal, precipitation, time-delay, two position pump",
author = "{Sheikh Abdullah}, {Siti Rozaimah} and Mustafa, {Mohd. Marzuki} and Rahman, {Rakmi Abdul} and Imm, {Tracy Ong Suan} and {Abu Hasan}, Hassimi",
year = "2011",
doi = "10.1109/ICPAIR.2011.5976890",
language = "English",
isbn = "9781612844046",
volume = "1",
pages = "171--176",
booktitle = "Proceedings of the 2011 International Conference on Pattern Analysis and Intelligent Robotics, ICPAIR 2011",

}

TY - GEN

T1 - A fuzzy logic controller of two-position pump with time-delay in heavy metal precipitation process

AU - Sheikh Abdullah, Siti Rozaimah

AU - Mustafa, Mohd. Marzuki

AU - Rahman, Rakmi Abdul

AU - Imm, Tracy Ong Suan

AU - Abu Hasan, Hassimi

PY - 2011

Y1 - 2011

N2 - The process control of pH in wastewater neutralisation and metal precipitation processes has been identified difficult to achieve via a normal conventional PID controller due to its non-linear and time-varying characteristics. Recently, controlling pH via fuzzy logic system that makes use of uncertain information and valuable human experience, has gained new attention and been proved efficient in controlling pH. Normally, in fuzzy logic controller, the speed of variable speed pumps are varied according to fuzzy rule base, in order to control the addition of caustic solution in metal hydroxide precipitation. However, in Malaysia, most of the small and medium scale industries are still using traditional instruments of on-off pumps (also known as two-position pumps) in controlling their processes. The management are reluctant to purchase new variable speed pumps due to the high cost constraint. The aim of this study was to develop a low-cost and reliable fuzzy logic pH controller, by making use of the traditional pumps. A set of fuzzy rules was developed based on two controller inputs, error (e) and change of error (e). Instead of pump speed (u), time-delay in switching on or off the pumps is used as the controller output in order to control the addition of caustic solution. The fuzzy logic controller successfully increased the pH of acidic wastewater to pH 9 and maintained this pH for all runs regardless the initial metal concentration of the wastewater. The results proved that the fuzzy concept is still applicable and yet, the present instruments can be used.

AB - The process control of pH in wastewater neutralisation and metal precipitation processes has been identified difficult to achieve via a normal conventional PID controller due to its non-linear and time-varying characteristics. Recently, controlling pH via fuzzy logic system that makes use of uncertain information and valuable human experience, has gained new attention and been proved efficient in controlling pH. Normally, in fuzzy logic controller, the speed of variable speed pumps are varied according to fuzzy rule base, in order to control the addition of caustic solution in metal hydroxide precipitation. However, in Malaysia, most of the small and medium scale industries are still using traditional instruments of on-off pumps (also known as two-position pumps) in controlling their processes. The management are reluctant to purchase new variable speed pumps due to the high cost constraint. The aim of this study was to develop a low-cost and reliable fuzzy logic pH controller, by making use of the traditional pumps. A set of fuzzy rules was developed based on two controller inputs, error (e) and change of error (e). Instead of pump speed (u), time-delay in switching on or off the pumps is used as the controller output in order to control the addition of caustic solution. The fuzzy logic controller successfully increased the pH of acidic wastewater to pH 9 and maintained this pH for all runs regardless the initial metal concentration of the wastewater. The results proved that the fuzzy concept is still applicable and yet, the present instruments can be used.

KW - fuzzy logic

KW - heavy metal

KW - precipitation

KW - time-delay

KW - two position pump

UR - http://www.scopus.com/inward/record.url?scp=80052223416&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=80052223416&partnerID=8YFLogxK

U2 - 10.1109/ICPAIR.2011.5976890

DO - 10.1109/ICPAIR.2011.5976890

M3 - Conference contribution

SN - 9781612844046

VL - 1

SP - 171

EP - 176

BT - Proceedings of the 2011 International Conference on Pattern Analysis and Intelligent Robotics, ICPAIR 2011

ER -