Fractional-order mathematical model of an irrigation main canal pool

  • Shlomi N. Calderon-Valdez Universidad de Castilla-La Mancha, Escuela Técnica Superior de Ingenieros Industriales. Av. Camilo Jose Cela s/n, 13071 Ciudad Real
  • Vicente Feliu-Batlle Universidad de Castilla-La Mancha, Escuela Técnica Superior de Ingenieros Industriales. Av. Camilo Jose Cela s/n, 13071 Ciudad Real
  • Raul Rivas-Perez Havana Polytechnic University (CUJAE), Department of Automatic Control and Computer Science. Calle 114, No. 11901. Marianao, 19390, Ciudad de la Habana
Keywords: prototype hydraulic canal, system identification, parameter estimation, canals automation, management of water resources


In this paper a fractional order model for an irrigation main canal is proposed. It is based on the experiments developed in a laboratory prototype of a hydraulic canal and the application of a direct system identification methodology. The hydraulic processes that take place in this canal are equivalent to those that occur in real main irrigation canals and the results obtained here can therefore be easily extended to real canals. The accuracy of the proposed fractional order model is compared by deriving two other integer-order models of the canal of a complexity similar to that proposed here. The parameters of these three mathematical models have been identified by minimizing the Integral Square Error (ISE) performance index existing between the models and the real-time experimental data obtained from the canal prototype. A comparison of the performances of these three models shows that the fractional-order model has the lowest error and therefore the higher accuracy. Experiments showed that our model outperformed the accuracy of the integer-order models by about 25%, which is a significant improvement as regards to capturing the canal dynamics.


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How to Cite
Calderon-ValdezS. N., Feliu-BatlleV., & Rivas-PerezR. (2015). Fractional-order mathematical model of an irrigation main canal pool. Spanish Journal of Agricultural Research, 13(3), e0212.
Agricultural engineering