Synthesis water level control by fuzzy logic

• Autorzy: Berk P. , Stajnko D. , Vindis P. , Mursec B. , Lakota M.
• Języki publikacji: EN

Abstrakty

EN

Purpose: This paper focuses on evolving of two types fuzzy and classical PID liquid level controller and examining whether they are better able to handle modelling uncertainties. A two stage strategy is employed to design the synthesis fuzzy and classical PID controller with the process of the first and second order and implements disorder (quadratic function). Design/methodology/approach: The synthesis of fuzzy and classical PID liquid level controller was realized with the HP laptop 6830s Compaq NA779ES, software Matlab/Simulink 2008b, FIS (Fuzzy Inference System) soft logical tool, input-output unit 500 Dragon Rider and ultrasonic sensor. Using the simulation program Matlab/Simulink/FIS we simulate the operation of fuzzy and classical controller in the liquid level regulating cycle and made a comparison between fuzzy and classical controller functioning. Findings: From the responses to step fuzzy and classical controller for first-order process shows that the actual value of the controlled variable takes the value one. Fuzzy and classical PID controller does not allow control derogation, which is also inappropriate for fuzzy and classical control cycle with incorporating disturbance. Classical PID controller in the first-order process provides short-term regulation, such as fuzzy PID controller. In fuzzy control cycle with fuzzy PID controller and incorporating disturbance in the process of second-order the control cycle is stable and at certain predetermined parameters (integral gain) a control does not allow deviations. Research limitations/implications: In future research, the robustness of the fuzzy logic controller will be investigated in more details. Practical implications: Using fuzzy liquid level controller can reduce power consumption by 25%. Originality/value: Fuzzy logic controller is useful in applications of nonlinear static characteristic, where classical methods with usually classical PID controllers cannot be a satisfactory outcome.

Słowa kluczowe

EN

automation engineering processes; controller; fuzzy logic; synthesis

• Wydawca: International OCSCO World Press
• Czasopismo: Journal of Achievements in Materials and Manufacturing Engineering
• Rocznik: 2011
• Tom: Vol. 45, nr 2
• Strony: 204--210
• Opis fizyczny: Bibliogr. 15 poz., rys., tab.

Twórcy

autor

Berk P.

• Faculty of Agriculture and Life Sciences, University of Maribor, Pivola 10, 2311 Hoce, Slovenia

autor

Stajnko D.

• Faculty of Agriculture and Life Sciences, University of Maribor, Pivola 10, 2311 Hoce, Slovenia

autor

Vindis P.

• Faculty of Agriculture and Life Sciences, University of Maribor, Pivola 10, 2311 Hoce, Slovenia

autor

Mursec B.

• Faculty of Agriculture and Life Sciences, University of Maribor, Pivola 10, 2311 Hoce, Slovenia

autor

Lakota M.

• Faculty of Agriculture and Life Sciences, University of Maribor, Pivola 10, 2311 Hoce, Slovenia

Bibliografia

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• [12] P. Vindis, B. Mursec, M. Janzekovic, F. Cus, The impact of mesophilic and thermophilic anaerobic digestion on biogas production, Journal of Achievements in Materials and Manufacturing Engineering 36/2 (2009) 192-198.
• [13] D. Stajnko, M. Janzekovic, B. Mursec, P. Vindis, F. Cus, The efficiency of different machines for controlling of western corn rootworm adults, Journal of Achievements in Materials and Manufacturing Engineering 40/1 (2010) 79-86.
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