Digital Control of a Waste Water Treatment Plant

  • Ramón Vilanova Department de Telecomunicació i Enginyeria de Sistemes Universitat Autònoma de Barcelona 08193, Bellaterra, Spain
  • José David Rojas Department de Telecomunicació i Enginyeria de Sistemes Universitat Autònoma de Barcelona 08193, Bellaterra, Spain
  • Víctor M. Alfaro Escuela de Ingeniería Eléctrica Universidad de Costa Rica San José, 11501-2060 Costa Rica.

Abstract

The Activated Sludge Process (ASP) is arguably the most popular bioprocess utilized in the treatment of polluted water. The ASP is described by means of a nonlinear model and results on a Two-Input Two-Output multivariable system. In this paper a discrete time digital control is proposed where the design of a decentralized controller is faced. Local controllers are given the form of a Two-Degree-of-Freedom PI controller tuned using the data-driven Virtual-Reference Feedback tuning approach.

References

[1] F. Nejjari, A. Benhammou, B. Dahhou, and G. Roux, "Non-linear multivariable adaptive control of an activated sludge wastewater treatment process," Int. J. Adapt. Control Signal Process., pp. 347–365, 1999.
http://dx.doi.org/10.1002/(SICI)1099-1115(199908)13:5<347::AID-ACS543>3.0.CO;2-8

[2] G. Guardabassi and S. Savaresi, "Virtual reference direct design method: an off-line approach to data-based control system design," Automatic Control, IEEE Transactions on, vol. 45, pp. 954–959, May 2000.
http://dx.doi.org/10.1109/9.855559

[3] M. C. Campi, A. Lecchini, and S. M. Savaresi, "Virtual reference feedback tuning: a direct method for the design of feedback controllers," Automatica, vol. 38, no. 8, pp. 1337 – 1346, 2002.
http://dx.doi.org/10.1016/S0005-1098(02)00032-8

[4] A. Lecchini, M. Campi, and S. Savaresi, "Sensitivity shaping via virtual reference feedback tuning," in Decision and Control, 2001. Proceedings of the 40th IEEE Conference on, vol. 1, pp. 750–755 vol.1, 2001.
http://dx.doi.org/10.1109/cdc.2001.980196

[5] A. Lecchini, M. Campi, and S. Savaressi, "Virtual reference feedback tuning for two degree of freedom controllers," International Journal of Adaptative control and Signal Processing, vol. 16, no. 5, pp. 355–371, 2002.

[6] R. Vilanova, R. Katebi, and V. Alfaro, "Multi-loop PI-based control strategies for the Activated Sludge Process," in Emerging Technologies and Factory Automation, 2009. ETFA 2009. IEEE International Conference on, September 2009.
http://dx.doi.org/10.1109/etfa.2009.5347062

[7] S. Caraman, M. Sbarciog, and B. Marian, "Predictive Control of aWastewater Treatment Process," International Journal of Computers, Communications & Control, vol. 2, no. 2, pp. 132–142, 2007.

[8] M. Morari and E. Zafirou, Robust Process Control. Prentice-Hall International, 1989.
Published
2011-06-01
How to Cite
VILANOVA, Ramón; ROJAS, José David; ALFARO, Víctor M.. Digital Control of a Waste Water Treatment Plant. INTERNATIONAL JOURNAL OF COMPUTERS COMMUNICATIONS & CONTROL, [S.l.], v. 6, n. 2, p. 367-374, june 2011. ISSN 1841-9844. Available at: <http://univagora.ro/jour/index.php/ijccc/article/view/2184>. Date accessed: 02 july 2020. doi: https://doi.org/10.15837/ijccc.2011.2.2184.

Keywords

ASP, Process Control, PID, Data-Driven Control, VRFT