On the Modelling and Control of a Laboratory Prototype of a Hydraulic Canal Based on a TITO Fractional-Order Model

Andres San Millan Rodriguez, Daniel Feliu-Talegon, Vicente Feliu-Batlle*, Raúl Rivas-Pérez

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

10 Citations (Scopus)
1 Downloads (Pure)

Abstract

In this paper a two-input, two-output (TITO) fractional order mathematical model of a laboratory prototype of a hydraulic canal is proposed. This canal is made up of two pools that have a strong interaction between them. The inputs of the TITO model are the pump flow and the opening of an intermediate gate, and the two outputs are the water levels in the two pools. Based on the experiments developed in a laboratory prototype the parameters of the mathematical models have been identified. Then, considering the TITO model, a first control loop of the pump is closed to reproduce real-world conditions in which the water level of the first pool is not dependent on the opening of the upstream gate, thus leading to an equivalent single input, single output (SISO) system. The comparison of the resulting system with the classical first order systems typically utilized to model hydraulic canals shows that the proposed model has significantly lower error: about 50%, and, therefore, higher accuracy in capturing the canal dynamics. This model has also been utilized to optimize the design of the controller of the pump of the canal, thus achieving a faster response to step commands and thus minimizing the interaction between the two pools of the experimental platform.
Original languageEnglish
Article number401
Number of pages18
JournalEntropy
Volume19
Issue number8
Early online date3 Aug 2017
DOIs
Publication statusPublished - 3 Aug 2017

Bibliographical note

Acknowledgments
The present work has been supported by the Consejería de Educacion, Cultura y Deportes de la Junta de Comunidades de Castilla-La Mancha and by the European Social Fund with the project POII-2014-014-P.

Keywords

  • hydraulic canal prototype
  • TITO fractional-order mathematical model
  • model validation
  • canal control

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