Publication
On modelling approaches for receding-horizon control design applied to large-scale sewage systems
Conference Article
Conference
IEEE Conference on Decision and Control (CDC)
Edition
48th
Pages
8052-8058
Doc link
http://dx.doi.org/10.1109/CDC.2009.5400216
File
Abstract
In this paper, receding horizon control of large- scale sewage systems is addressed considering different mod- elling approaches, which include several inherent continu- ous/discrete phenomena (overflows in sewers and tanks) and elements (weirs) in the system. This fact results in distinct behaviours depending on the dynamic state (flow/volume) of the network. These behaviours can not be neglected nor can be modelled by a pure linear representation. In order to take into account these phenomena and elements for the design of the control strategy, a modelling approach based on piece-wise linear functions (PWLF) is proposed and compared against a hybrid modelling approach previously reported by the authors. Control performance results and associated computation times considering both modelling approaches are compared by using a real case study based on the Barcelona sewer network. Results have shown an important reduction in the computation time when the PWLF-based model is used, with an acceptable suboptimality level in the closed-loop system performance.
Categories
dynamic programming, optimal control, optimisation, predictive control, suboptimal control.
Author keywords
Receding-horizon control, dynamical optimization, system modelling, large-scale systems, sewer networks, model predictive control
Scientific reference
C. Ocampo-Martínez and V. Puig. On modelling approaches for receding-horizon control design applied to large-scale sewage systems, 48th IEEE Conference on Decision and Control, 2009, Shanghai, pp. 8052-8058, IEEE.
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