A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
On modelling approaches for receding-horizon control design applied to large-scale sewage systems
Trabajo presentado a la 48th CDC celebrada en Shanghai del 15 al 18 de diciembre de 2009. ; 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. ; This work was supported by the project 'Integración de técnicas avanzadas de modelado, control y supervisión aplicadas a la gestión del ciclo integral del agua ' (4797). This work has been supported by the CICYT Ref. DPI 2006-11944 of the Spanish Science and Technology Ministry, the Juan de la Cierva Research Programme (Ref. JCI-2008-2438), and the DGR of Generalitat de Catalunya (SAC group Ref. 2009/SGR/1491). ; Peer Reviewed
On modelling approaches for receding-horizon control design applied to large-scale sewage systems
Trabajo presentado a la 48th CDC celebrada en Shanghai del 15 al 18 de diciembre de 2009. ; 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. ; This work was supported by the project 'Integración de técnicas avanzadas de modelado, control y supervisión aplicadas a la gestión del ciclo integral del agua ' (4797). This work has been supported by the CICYT Ref. DPI 2006-11944 of the Spanish Science and Technology Ministry, the Juan de la Cierva Research Programme (Ref. JCI-2008-2438), and the DGR of Generalitat de Catalunya (SAC group Ref. 2009/SGR/1491). ; Peer Reviewed
On modelling approaches for receding-horizon control design applied to large-scale sewage systems
Ocampo-Martinez, Carlos (author) / Puig, Vicenç (author)
2009-01-01
Conference paper
Electronic Resource
English
DDC:
690
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