Implementation of MATLAB-GUI based Fuzzy Logic Controllers for Liquid Level Control System
نویسنده
چکیده
This paper presents the design and implementation of MATLAB graphical user interface (GUI) based fuzzy and integrated fuzzy logic controllers (IFLC) for liquid level control system. The control algorithms are developed in MATLAB. The fuzzy tool box in MATLAB is used to design fuzzy logic controller. An indigenously designed ADDA board is interfaced to PC through PCI DIOT card to acquire signals from sensor and send control output to the actuator. The GUI designed for the present study is used to control liquid level in real-time mode. Also, the simulation study of PIDC, FLC and IFLC is carried out. Simulation models are created using the MATLAB/SIMULINK software. The liquid level is acquired by PC and displayed on GUI. The control action is sent to the control valve to maintain the liquid level at desired set point. The inflow of the water is controlled by varying the opening and closing of inlet valve. The proposed GUI not only compares the simulation and real-time results of PIDC, FLC, and IFLC controllers but also allows user to test and tune the controller of interest. The step input of 15cm and staircase input of 15cm, 30cm and 45cm are applied. From both the studies it is observed that for step and staircase, the performance of IFLC is better in terms of faster settling-time, lesser rise-time, and with no steady state error.
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