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Research Article |

Design of Subtractive Fuzzy Clustering-Based PI Controller for Level Control of Quadruple Tank System with Dead Time

Author(s): Mahammedrafi. G1, R. Dhanalakshmi2, Rambabu Busi3

Published In : International Journal of Electrical and Electronics Research (IJEER)        Volume 14, Issue 2

Publisher : FOREX Publication

Published : 30 June 2026

e-ISSN : 2347-470X

Page(s) : 562-571

DOI: https://doi.org/10.37391/IJEER.140231

Abstract

The performances of the Proportional-Integral controller, Fuzzy Logic controller, and Subtractive Fuzzy Clustering-based PI controller (SFC-PI) have been investigated for regulating the level in a Quadruple Tank System with Dead Time (QTSWDT). The QTSWDT is an ideal benchmark to test various control approaches since it has nonlinear dynamics and complicated interactions between tanks. While classic PI controllers are successful in controlling linear systems, they face difficulties in regulating the nonlinearities and cross-couplings inherent in QTSWDT. Fuzzy logic controllers offer extended adaptation to nonlinearities but require substantial tuning. The SFC-PI controller, which offers subtractive fuzzy clustering to instinctively generate fuzzy rules, surpasses the other techniques by significantly reducing ISE, IAE, settling time, and peak overshoot. Simulation outputs disclose that the SFC-PI controller has the best overall performance, making it a competent choice for complex nonlinear control applications.

Keywords: Quadruple Tank System with Dead Time (QTSWDT), Level Control, PI Controller, Nonlinear, Subtractive Fuzzy Clustering.




Mahammedrafi. G, Research Scholar, Department of Electronics and Instrumentation Engineering, Annamalai University, Tamil Nadu, India; Email: ramahammed@gmail.com

R. Dhanalakshmi, Department of Electronics and Communication Engineering, Thanthai Periyar Government Institute of Technology, Vellore-02, Tamil Nadu, India; Email: Email: dhanavishnu02@gmail.com

Rambabu Busi, Department of Electronics and Communication Engineering, Lakireddy Bali Reddy College of Engineering(A), Mylavaram, India; Email: rams1315@gmail.com

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Mahammedrafi. G, R. Dhanalakshmi, and Rambabu Busi (2026), Design of Subtractive Fuzzy Clustering-Based PI Controller for Level Control of Quadruple Tank System with Dead Time. IJEER 14(2), 562-571. DOI: 10.37391/IJEER.140231.