Hierarchical Control of Irrigation Canals in the Presence of
Disturbances: Framework and Comparison
Reference
A. Sadowska,
B. De Schutter, and
P.-J. van Overloop,
"Hierarchical Control of Irrigation Canals in the Presence of
Disturbances: Framework and Comparison," Proceedings
of the 2014 European Control Conference, Strasbourg, France,
pp. 1349-1354, June 2014.
Abstract
We study a control problem of delivering water to farmers through an
irrigation canal and introduce a hierarchical controller with a
Coordinator that by employing Model Predictive Control principles
coordinates local canal reaches by modifying setpoints only when it is
needed. Once the setpoints are set, the Coordinator does not interfere
with the functioning of the local sites and the canal is fully
controlled by local PI controllers located at each gate. Therefore the
communication between the centralized controller and the local sites
is kept minimal, which is motivated by the communication restrictions
that are present in the field of irrigation. We consider three
predictive control designs, namely a nominal controller, and two
robust designs: a constraint tightening controller adapted to fit our
application and a min-max controller. We present a numerical example
to compare the performance obtained by the three controllers. It is
found that for the given case study with a small disturbance
realization, the nominal controller performs better than the robust
controllers, the behaviors of which prove overly conservative.
Downloads
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Bibtex entry
@inproceedings{SadDeS:14-033,
author={A. Sadowska and B. {D}e Schutter and P.-J. van Overloop},
title={Hierarchical Control of Irrigation Canals in the Presence of
Disturbances: {Framework} and Comparison},
booktitle={Proceedings of the 2014 European Control Conference},
address={Strasbourg, France},
pages={1349--1354},
month=jun,
year={2014}
}
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