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On modelling approaches for receding-horizon control design applied to large-scale sewage systems

AutorOcampo-Martinez, Carlos; Puig, Vicenç
Fecha de publicación2009
EditorInstitute of Electrical and Electronics Engineers
CitaciónProceedings of the 48th IEEE Conference on Decision and Control: 8052-8058 (2009)
ResumenIn 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.
DescripciónTrabajo presentado a la 48th CDC celebrada en Shanghai del 15 al 18 de diciembre de 2009.
Versión del editorhttp://dx.doi.org/10.1109/CDC.2009.5400216
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