Reference
A. Sadowska, P.-J. van Overloop, C. Burt, and B. De Schutter, "Hierarchical
operation of water level controllers: Formal analysis and application on a
large scale irrigation canal,"
Water Resources
Management, vol. 28, no. 14, pp. 4999-5019, Nov. 2014.
Abstract
We introduce a hierarchical controller, the purpose of which is to speed up the
water delivery process as compared to the standard method applied currently in
the field. The lower layer of the hierarchical control consists of local
proportional integral filter controllers (PIF controllers) for upstream control
at each gate; specifically they are proportional integral controllers with a
low-pass filter. In contrast, the higher layer is composed of a centralized
model-based predictive controller, which acts by controlling the head gate and
by coordinating the local PIF controllers by modifying their setpoints when
needed. The centralized controller is event-driven and is invoked only when
there is a need for it (a water delivery request) and as such it contributes
scarcely to the communication burden. The scheme is robust to temporary
communication losses as the local PIF controllers are fully able to control the
canal in their normal independent automatic upstream control mode until the
communication links are restored. We discuss the application of the
hierarchical controller to a precise numerical model of the Central California
Irrigation District Main Canal. This shows the improved performance of the new
hierarchical controller over the standard control method.
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BibTeX
@article{Sadvan:15-009,
author = {Sadowska, Anna and van Overloop, Peter-Jules and Burt, Charles
and De Schutter, Bart},
title = {Hierarchical Operation of Water Level Controllers: Formal
Analysis and Application on a Large Scale Irrigation Canal},
journal = {Water Resources Management},
volume = {28},
number = {14},
pages = {4999--5019},
month = nov,
year = {2014}
}