The Design of a Microcontroller-based Automatic Liquid Level Control System

 
 
 
  • Abstract
  • Keywords
  • References
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  • Abstract


    In this paper, a liquid level control system was designed and fabricated. Control of the liquid level was accomplished by adjusting the sup-ply voltage to a centrifugal pump that is delivering the liquid from a reservoir tank to an upper tank. The liquid level control system was implemented on an ATmega328 microcontroller. Three control strategies are implemented, manual mode, ON/OFF controller, and PID controller. Serial communication is used to establish the communication between the ATmega328 and a computer running MATLAB soft-ware. A graphical user interface was constructed to allow users to interact with the system. The system model is obtained using an experi-mental approach. The obtained model is then used for the design of the PID controller. Experimental results are provided to highlight the performance of the implemented controllers.

     

     


  • Keywords


    Liquid Level Control; ON/OFF Controller; PID Controller; MATLAB GUI.

  • References


      [1] J. D. Wagoner, N. F. Macia, “Automatic Liquid Level Controller Using A LabVIEW Based Pc”, Department of Electronics & Computer Technology Arizona State University East.

      [2] T. Cheung, “Liquid-Level Control in Single Tanks and Cascades of Tanks with Proportional-Only and Proportional-Integral Feedback Controllers”, Industrial & Engineering Chemistry Fundamentals, 1979 18 (1), 15-21 https://doi.org/10.1021/i160069a004.

      [3] M. Lee, J. Shin, “Constrained optimal control of liquid level loop using a conventional proportional-integral controller”, Taylor and Francis, Chem. Eng. Commun. vol. 196, pp. 729–745, 2009. https://doi.org/10.1080/00986440802557393.

      [4] L. Yu, W. Liu, and H. Wu, “Automatic Liquid Level Detection System Based on LabVIEW”, Advanced Materials Research, 605-607, pp.1772-1775, 2012. https://doi.org/10.4028/www.scientific.net/AMR.605-607.1772.

      [5] R. Paul, A. Sengupta, R. R. Pathak, “Wavelet based denoising technique for liquid level system”, Measurement, vol. 46, pp. 1979–1994, 2013. https://doi.org/10.1016/j.measurement.2013.02.004.

      [6] B. N. Getu and H. A. Attia, "Automatic water level sensor and controller system," 2016 5th International Conference on Electronic Devices, Systems and Applications (ICEDSA), Ras Al Khaimah, pp. 1-4, 2016. https://doi.org/10.1109/ICEDSA.2016.7818550.

      [7] A. Piazzi and A. Visioli, “A Noncausal Approach for PID control”, Journal of Process Control, 4 March 2006. https://doi.org/10.1016/j.jprocont.2006.03.001.

      [8] M. A. Fellani and A. M. Gabaj, “PID controller design for two tanks liquid level control system using MATLAB", International Journal of Electrical and Computer Engineering (IJECE), vol. 5, ISSN 2088-8708, p. 336-342, 2015.

      [9] S. Panda, B.K. Sahu, P.K. Mohanty, “Design and performance analysis of PID controller for an automatic voltage regulator system using simplified particle swarm optimization”, Journal of the Franklin Institute, Volume 349, Issue 8, 2012, Pages 2609-2625, ISSN 0016-0032. https://doi.org/10.1016/j.jfranklin.2012.06.008.

      [10] S. Kumar, R. Negi, “A comparative study of PID tuning methods using anti-windup controller”, Power Control and Embedded Systems (ICPCES) 2012 2nd International Conference on, pp. 1-4, 2012. https://doi.org/10.1109/ICPCES.2012.6508138.

      [11] D. K. Sambariya, R. Prasad and D. Birla, “Design and performance analysis of PID based controller for SMIB power system using Firefly algorithm”, 2015 2nd International Conference on Recent Advances in Engineering & Computational Sciences (RAECS), Chandigarh, 2015, pp. 1-8.. https://doi.org/10.1109/RAECS.2015.7453394.


 

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Article ID: 21273
 
DOI: 10.14419/ijet.v8i4.21273




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