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

Andres San-Millan, Daniel Feliu-Talegón, Vicente Feliu-Batlle, Raul Rivas-Perez
2017 Entropy  
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.  ...  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  ... 
doi:10.3390/e19080401 fatcat:wdcs6lgufvgl5fvkj22kj2kejq

A Fractional-Order Partially Non-Linear Model of a Laboratory Prototype of Hydraulic Canal System

Saddam Gharab, Vicente Feliu-Batlle, Raul Rivas-Perez
2019 Entropy  
This article addresses the identification of the nonlinear dynamics of the main pool of a laboratory hydraulic canal installed in the University of Castilla La Mancha.  ...  Fractional and integer order plus time delay models are used to approximate the responses of the main pool of the canal in its different flow regimes.  ...  This paper proposed a multivariable fractional-order system with two inputs (the frequency of the pump and the upstream gate opening command u(t)) and two outputs (the water levels of the first pool y  ... 
doi:10.3390/e21030309 pmid:33267022 fatcat:apranqyddbctznuowsg6qaxdba

REAL-TIME IMPLEMENTATION OF A DECENTRALIZED CONTROL FOR AN OPEN IRRIGATION CANAL PROTOTYPE

Ofelia Begovich, Juan C. Felipe, Victor M. Ruiz
2008 Asian journal of control  
This paper presents a real-time implementation of a decentralized LQG controller to regulate the downstream levels at the end of the pools in a four-pool open irrigation canal prototype with an upstream  ...  Controller synthesis uses a "black box" input-output identified linear model.  ...  LABORATORY CANAL AND HYDRAULIC MODEL Laboratory canal The canal prototype used in the present study is a zero slope rectangular canal with glass walls and concrete bottom, located at the Hydraulics Laboratory  ... 
doi:10.1111/j.1934-6093.2007.tb00320.x fatcat:yymw4k2funfxnbmz34hiruwijq

Salt River Project Canal Automation Pilot Project: Simulation Tests

E. Bautista, A. J. Clemmens, R. J. Strand
2006 Journal of irrigation and drainage engineering  
Performance of the control system was tested with unsteady flow simulation. Test scenarios were defined by the operators for a 30 km, four-pool canal reach.  ...  The feasibility of automatically controlling water levels and deliveries on the Salt River Project ͑SRP͒ canal system through computer-based algorithms is being investigated.  ...  Simulation with Mike-11 The Danish Hydraulic Institute ͑DHI͒ developed a Mike-11 ͑version 3.2, DHI 1992͒ model of SRP's Arizona Canal ͑Rungo 1995͒.  ... 
doi:10.1061/(asce)0733-9437(2006)132:2(143) fatcat:qb7tuth23rbwlesifpnc4ruewq

Fractional-Order System Modeling and its Applications

Kajal Kothari, School of Engineering and Physics, The University of the South Pacific, Laucala campus, Fiji., Utkal Mehta, Ravneel Prasad, School of Engineering and Physics, The University of the South Pacific, Laucala campus, Fiji., School of Engineering and Physics, The University of the South Pacific, Laucala campus, Fiji.
2019 Journal of Engineering Science and Technology Review  
In the last two decades, a fractional-order model has received more attention in system identification instead of classical integer-order model transfer function.  ...  In order to control or operate any system in a closed-loop, it is important to know its behavior in the form of mathematical models.  ...  Modeling of two-pool laboratory hydraulic canal was described by [103] . The approximation technique of massive MIMO system was described by [104] to facilitate wireless communications.  ... 
doi:10.25103/jestr.126.01 fatcat:pfgesa4gpffrflvr6wspqmwu6i

Stream nitrate uptake and transient storage over a gradient of geomorphic complexity, north-central Colorado, USA

Daniel W. Baker, Brian P. Bledsoe, Jennifer Mueller Price
2012 Hydrological Processes  
the bed elevation from Chapra and Canale (1988). e R/d 84 = ratio of the hydraulic radius R to the 84th percentile stream bed sediment size d 84 .  ...  Breakthrough-curve modelling of conservative bromide (Br À ) and nonconservative nitrate (NO 3 À ) tracer injections characterised transient storage and nitrate uptake along each reach.  ...  The best subsets of multiple regression models with two variables or less were sorted by their adjusted R 2 value and subjected to meeting parameter and overall model significance (P < 0.10).  ... 
doi:10.1002/hyp.8385 fatcat:cc7to2nr7nbmnnn2xegeu7wknm

Engineering Analysis of Plant and Fungal Contributions to Bioretention Performance

Alex Taylor, Jill Wetzel, Emma Mudrock, Kennith King, James Cameron, Jay Davis, Jenifer McIntyre
2018 Water  
by volume, despite the known leaching problems with high compost volume fraction soils.  ...  management standards in an urban watershed in Seattle, WA that included a busy portion of Interstate 5.  ...  Those results are echoed in a 2014 study published by American Society of Civil Engineers that found increasing compost volume fraction is correlated with decreasing hydraulic conductivity and increasing  ... 
doi:10.3390/w10091226 fatcat:q27dxb55bbcoxk5tkwisjm3riy

Tree-based modeling of complex interactions of phosphorus loadings and environmental factors

S. Grunwald, S.H. Daroub, T.A. Lang, O.A. Diaz
2009 Science of the Total Environment  
The monthly P loads (MPL) during the monitoring period showed a maximum of 2528 kg (mean: 103 kg) and maximum monthly unit area P loads (UAL) of 4.88 kg P ha − 1 (mean: 0.16 kg P ha − 1 ).  ...  approaches, and (3) evaluate predictive models to assess P loads.  ...  The variable percentflood with a relative importance score of 72.5 in the ARCing model showed much less importance in the Bagging model with a score of 21.1.  ... 
doi:10.1016/j.scitotenv.2009.02.030 pmid:19324395 fatcat:ts5qwu4mfrhjpmylqhk43ydmtm

Adjustments and coordination of hydraulic, leaf and stem traits along a water availability gradient

Teresa Rosas, Maurizio Mencuccini, Josep Barba, Hervé Cochard, Sandra Saura-Mas, Jordi Martínez-Vilalta
2019 New Phytologist  
For six dominant tree species in northeastern Spain (three Fagaceae and three Pinaceae) we quantified the inter- and intraspecific variability of a set of traits along a water availability gradient.  ...  However, when trait relationships with water availability were assessed within species they held only for Hv and Ptlp .  ...  TR was supported by a FPI scholarship from the MINECO. JMV benefited from an ICREA Academia award.  ... 
doi:10.1111/nph.15684 pmid:30636323 fatcat:hv6xozu47bfsjftl6eozrerxqm

Effects of hydrogeomorphic region, catchment storage and mature forest on baseflow and snowmelt stream water quality in second-order Lake Superior Basin tributaries

Naomi E. Detenbeck, Colleen M. Elonen, Debra L. Taylor, Leroy E. Anderson, Terri M. Jicha, Sharon L. Batterman
2003 Freshwater Biology  
Catchment storage interacted with the influence of mature forest for only two metrics: colour and the soluble inorganic nitrogen : phosphorus ratio. 3.  ...  We assessed two hydrologically based thresholds of impairment, one for catchment storage (5-10%) and one for mature forest (<50% versus >60% of catchment in mature forest cover) across two different hydrogeomorphic  ...  It has been subjected to review by the National Health and Environmental Effects Research Laboratory and approved for publication.  ... 
doi:10.1046/j.1365-2427.2003.01056.x fatcat:ohkf33rp2bhntkpqenf6cbdaty

Spatial Characterization of Water Quality in Florida Bay and Whitewater Bay by Multivariate Analyses: Zones of Similar Influence

Joseph N. Boyer, James W. Fourqurean, Ronald D. Jones
1997 Estuaries  
Principal component analysis of 16 water quality parameters collected monthly over a 6-yr period resnlted in live prinr.ipaI COIIIponents (PC) that explained 71.8% of the variance of the original variables  ...  A cluster analysis of mean and SI) ol' I'(: tswrt~w wadted in the spatial aggregation of 50 fixed monitoring stations in Florida Bay and Whitewater Ilay into nix ZOIW~~ 01' similar influence (ZSI) defined  ...  ACKNOWLEDGMENTS We thank Pete Lorenzo, Tom Frankovich, Jeff Absten, and all the other field and laboratory technicians involved with this project over the years.  ... 
doi:10.2307/1352248 fatcat:yz3mpjms2jgrrckytsvpedplee

Land–atmosphere interactions in the tropics – a review

Pierre Gentine, Adam Massmann, Benjamin R. Lintner, Sayed Hamed Alemohammad, Rong Fu, Julia K. Green, Daniel Kennedy, Jordi Vilà-Guerau de Arellano
2019 Hydrology and Earth System Sciences  
Along with a wide range of climates, the tropics manifest a diverse array of land–atmosphere interactions.  ...  On the other hand, the impact of land-surface conditions on deep convection appears to occur over larger, nonlocal scales and may be a more relevant land–atmosphere feedback mechanism in transitional dry-to-wet  ...  Note the cold-pool bow effect on the bottom left corner, with no clouds within the cold pools and clouds on the edge of the cold pool.  ... 
doi:10.5194/hess-23-4171-2019 fatcat:gjsxkjvhavcrnefmd7m5rnlks4

Abstracts of the 10th Conference of the Italian Society of Agricultural Engineering

Danilo Monarca, Massimo Cecchini
2013 Journal of Agricultural Engineering  
Technical Notes: are articles with a simple layout and containing limited data (no more than two figures or tables) and a small number of citations (not more than 25).  ...  The abstract should contain a maximum of 400 words. Review Articles: no particular format is required for these articles.  ...  Geometric and hydraulic variables were measured for the following step-pool cross-sections: step head, pool center, intermediate position between pool end next step.  ... 
doi:10.4081/jae.2013.s1 fatcat:h7ew2cbv35eozilnpl4acjfv5a

10th Applied Isotope Geochemistry Conference

2013 Central European Geology  
The method combines a H 2 O (liquid) -H 2 O (vapour) equilibrium cell with a Los Gatos Research (LGR) cavity ring down mass spectrometer (CRDS) and follows and adaption of the original method presented  ...  Sediment and rock samples taken from a research site in New South Wales, Australia were first equilibrated in a fixed volume of dehumidified air and then directly sampled by the LGR mass spectrometer.  ...  Averages of target species marked with * are significantly different and those marked with ns are not significantly different from values of the reference species in the same area. part of their N from  ... 
doi:10.1556/ceugeol.56.2013.2-3.1 fatcat:kgsdeqp5mjglpbgr6eju5j2rii

National, Holistic, Watershed-Scale Approach to Understand the Sources, Transport, and Fate of Agricultural Chemicals

Paul D. Capel, Kathleen A. McCarthy, Jack E. Barbash
2008 Journal of Environmental Quality  
Ground-water models Ground-water flow models were constructed at two scales as part of this study.  ...  The PVC tube was closed with a nylon plug that had two ¼inch Swagelock fittings for tubing.  ... 
doi:10.2134/jeq2007.0226 pmid:18453422 fatcat:dyvddo54ybdlrhzamm5ifi7l24
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