Kombinasi Sistem Kontrol Feedforward-Feedback Loop Pada Water Level Tank

Rohman, Muhammad Syauqi Taufiqur (2025) Kombinasi Sistem Kontrol Feedforward-Feedback Loop Pada Water Level Tank. Other thesis, Institut Teknologi Sepuluh Nopember.

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Abstract

Gangguan laju aliran masuk pada sistem level tangki sering memicu overshoot atau undershoot besar pada kontrol umpan balik tunggal (single-loop feedback), memperpanjang waktu stabilisasi dan berpotensi meningkatkan risiko operasional. Studi ini mengevaluasi strategi kontrol gabungan feedforward feedback untuk meminimalisir gangguan yang masuk (inlet flow) pada Water Level Tank Plant dengan setpoint 35 cm. Model proses diidentifikasi menggunakan pendekatan First Order Plus Dead Time (FOPDT) dan diimplementasikan dalam MATLAB/Simulink sebelum divalidasi secara eksperimental melalui skenario lonjakan debit 3 L/min selama 105 s. Dibandingkan umpan balik tunggal, arsitektur gabungan menurunkan overshoot dari 3 cm (8,57%) menjadi 2 cm (5,71%)dan mengurangi undershoot dari 3 cm (8,57%) menjadi 1 cm (2,85%). Analisis error steady state (ess) menunjukkan penurunan dari 1,49% menjadi 1,11% pada gangguan metode up, dan dari 5,60% menjadi 2,09% pada metode down. Peningkatan ini berkorelasi dengan waktu stabilisasi yang lebih cepat. Hasil penelitian menunjukkan bahwa kontrol feedforward feedback memberikan peningkatan kinerja signifikan dibanding kontrol umpan balik tunggal dan berpotensi diterapkan pada sistem laboratorium maupun proses industri berskala kecil.
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Inflow disturbances in tank level systems often induce significant overshoot or undershoot in single-loop feedback control, resulting in prolonged stabilization times and increased operational risks. This study evaluates a combined feedforward–feedback control strategy to minimize inlet flow disturbances in a Water Level Tank Plant with a setpoint of 35 cm. The process model is identified using the First-Order Plus Dead Time (FOPDT) approach and implemented in MATLAB/Simulink, followed by experimental validation under a 3 L/min inflow surge scenario lasting 105 s. Compared to single-loop feedback, the combined architecture reduces overshoot from 3 cm (8.57%) to 2 cm (5.71%) and decreases undershoot from 3 cm (8.57%) to 1 cm (2.85%). The steady-state error (ess) analysis shows a reduction from 1.49% to 1.11% under the up-disturbance scenario, and from 5.60% to 2.09% under the down-disturbance scenario. These improvements correlate with faster stabilization times. The results demonstrate that the feedforward–feedback control strategy significantly enhances system performance compared to single-loop feedback control and has strong potential for application in laboratory setups as well as small-scale industrial process.

Item Type:	Thesis (Other)
Uncontrolled Keywords:	Feedforward–feedback control, single-loop feedback, water level tank system, gangguan, FOPDT Model, PID control, steady-state error, MATLAB/Simulink, Feedforward–feedback control, single-loop feedback, water level tank system, disturbance rejection, FOPDT modeling, PID control, steady-state error, MATLAB/Simulink.
Subjects:	T Technology > TJ Mechanical engineering and machinery > TJ217.6 Predictive Control T Technology > TJ Mechanical engineering and machinery > TJ219 Pneumatic control systems T Technology > TJ Mechanical engineering and machinery > TJ223.A25 Actuators. T Technology > TJ Mechanical engineering and machinery > TJ223.P76 Programmable controllers T Technology > TJ Mechanical engineering and machinery > TJ357 Pressure regulators T Technology > TJ Mechanical engineering and machinery > TJ223 PID controllers T Technology > TK Electrical engineering. Electronics Nuclear engineering > TK1007 Electric power systems control T Technology > TK Electrical engineering. Electronics Nuclear engineering > TK1010 Electric power system stability. Electric filters, Passive. T Technology > TK Electrical engineering. Electronics Nuclear engineering > TK2791 D.C. to A.C. transforming machinery. T Technology > TK Electrical engineering. Electronics Nuclear engineering > TK2861 Electric relays. Protective relays--Security measures. T Technology > TK Electrical engineering. Electronics Nuclear engineering > TK3030 Electric power distribution systems T Technology > TK Electrical engineering. Electronics Nuclear engineering > TK3070 Automatic control T Technology > TK Electrical engineering. Electronics Nuclear engineering > TK5102.9 Signal processing. T Technology > TK Electrical engineering. Electronics Nuclear engineering > TK5105 Data Transmission Systems T Technology > TK Electrical engineering. Electronics Nuclear engineering > TK7870.23 Reliability. Failures T Technology > TK Electrical engineering. Electronics Nuclear engineering > TK7878 Electronic instruments T Technology > TP Chemical technology > TP1151 Special molding and casting processes T Technology > TP Chemical technology > TP155.5 Chemical plants--Design and construction T Technology > TP Chemical technology > TP155.7 Chemical processes.
Divisions:	Faculty of Vocational > Instrumentation Engineering
Depositing User:	Muhammad Syauqi Taufiqur Rohman
Date Deposited:	30 Jul 2025 07:22
Last Modified:	30 Jul 2025 07:22
URI:	http://repository.its.ac.id/id/eprint/123235

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