Modelling Approaches for Predictive Control of Large-Scale Sewage Systems
نویسندگان
چکیده
In this report, model predictive control (MPC) of large-scale sewage systems is addressed considering different modelling approaches that include several inherent continuous/discrete phenomena (overflows in sewers and tanks) and elements (weirs) in the system that result in distinct behaviour 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 the MPC controller takes into account these phenomena and elements, a modelling approach based on piece-wise linear functions is proposed and compared against a hybrid modelling approach previously reported by the authors. Control performance results and associated computation times of the closed-loop scheme considering both modelling approaches are compared by using a real case study based on the Barcelona sewer network. ∗ Vicenç Puig is with the Control Department (ESAII), Technical University of Catalonia (UPC), Rambla de Sant Nebridi, 10, 08222 Terrassa, Spain, e-mail: [email protected] Institut de Robòtica i Informàtica Industrial (IRI) Consejo Superior de Investigaciones Cient́ıficas (CSIC) Universitat Politècnica de Catalunya (UPC) Llorens i Artigas 4-6, 08028, Barcelona, Spain Tel (fax): +34 93 401 5750 (5751) http://www.iri.upc.edu Corresponding author: C. Ocampo-Martinez tel: +34 93 401 5786 [email protected] http://www.iri.upc.edu/people/cocampo c © Copyright IRI, 2009 Section
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Piece-wise linear functions-based model predictive control of large-scale sewage systems
In this study, model predictive control (MPC) of large-scale sewage systems is addressed, considering several inherent continuous/discrete phenomena (overflows in sewers and tanks) and elements (weirs) in the system. This fact results in distinct behaviour depending on the dynamic state (flow/volume) of the network. These behaviours cannot be neglected nor can be modelled by a pure linear repre...
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