Experimental validation of a methodology to control irrigation canals based on Saint-Venant equations

This paper exposes and validates a methodology based on a classical hydraulic model (Saint-Venant equations) to design efficient automatic controllers for an irrigation canal pool. The method is applied on a laboratory canal located in Portugal. First, the full nonlinear hydraulic model is calibrate...

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Bibliographic Details
Published in:Control engineering practice 2005-11, Vol.13 (11), p.1425-1437
Main Authors: Litrico, Xavier, Fromion, Vincent, Baume, Jean-Pierre, Arranja, Carina, Rijo, Manuel
Format: Article
Language:English
Subjects:
Automatic Control Engineering
Computer Science
Environmental systems
Irrigation channels
PI control
Time Delay Systems
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Summary:This paper exposes and validates a methodology based on a classical hydraulic model (Saint-Venant equations) to design efficient automatic controllers for an irrigation canal pool. The method is applied on a laboratory canal located in Portugal. First, the full nonlinear hydraulic model is calibrated, using a single steady-state experiment, then it is validated on other hydraulic conditions. The control model is obtained by linearizing the Saint-Venant equations and using a numerical method to compute the frequency response of the system. Simple controllers are designed and analyzed using the linearized models. The experimental results show that such a method is able to accurately predict the closed-loop system behavior in terms of stability, robustness and performance.
ISSN:0967-0661
1873-6939
DOI:10.1016/j.conengprac.2004.12.010