On modelling approaches for receding-horizon control design applied to large-scale sewage systems
Tipo de documentoComunicación de congreso
Fecha de publicación2009
Condiciones de accesoAcceso restringido por política de la editorial
In this paper, receding horizon control of largescale sewage systems is addressed considering different modelling approaches, which include several inherent continuous/ 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.
CitaciónOcampo-Martinez, C.; Puig, V. On modelling approaches for receding-horizon control design applied to large-scale sewage systems. A: IEEE Conference on Decision and Control. "48th IEEE Conference on Decision and Control and 28th Chinese Control Conference". Shangai: 2009, p. 8052-8058.
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