Tesis doctoral de Carlos Alberto Sepulveda Toepfer
This thesis aims to develop control algorithms for irrigation canals in an experimental framework. these water transport systems are difficult to manage and present low efficiencies in practice. As a result, an important percentage of water is lost, maintenance costs increase and water users follow a rigid irrigation schedule. All these problems can be reduced by automating the operation of irrigation canals. in order to fulfil the objectives, a laboratory canal, called canal pac-upc, was equipped and instrumented in parallel with the development of this thesis. In general, the methods and solutions proposed herein were extensively tested in this canal. in a broader context, three main contributions in different irrigation canal control areas are presented. focusing on gate-discharge measurements, many submerged-discharge calculation methods are tested and compared using canal pac-upc measurement data. It has been found that most of them present errors around ±10%, but there are notable exceptions. Specifically, using classical formulas with a constant 0.611 contraction value give very good results (error menor que ±6%), but when data is available, a very simple calibration formula recently proposed in the literature significantly outperform the rest (error menor que ±3%). As a consequence, the latter is encouragingly proposed as the basis of any gate discharge controller. with respect to irrigation canal modeling, a detailed procedure to obtain data-driven linear irrigation canal models is successfully developed. These models do not use physical parameters of the system, but are constructed from measurement data. In this case, these models are thought to be used in irrigation canal control issues like controller tuning, internal controller model in predictive controllers or simply as fast and simple simulation platforms. Much effort is employed in obtaining an adequate model structure from the linearized saint-venant equations, yielding to a mathematical pr
Datos académicos de la tesis doctoral «Instrumentation, model identification and control of an experimental irrigation canal«
- Título de la tesis: Instrumentation, model identification and control of an experimental irrigation canal
- Autor: Carlos Alberto Sepulveda Toepfer
- Universidad: Politécnica de catalunya
- Fecha de lectura de la tesis: 03/04/2008
Dirección y tribunal
- Director de la tesis
- José Rodellar Benedé
- Tribunal
- Presidente del tribunal: jordi Riera colomer
- blas Manuel Vinagre jara (vocal)
- pierre Olivier malaterre (vocal)
- josep Dolz ripollés (vocal)