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Título

Hierarchical design of decentralized control structures for the Tennessee Eastman Process

Autor Antelo, L. T. ; Banga, Julio R. ; Alonso, Antonio A.
Palabras clave Plant-wide control
Tennessee Eastman Process
Process networks
Process thermodynamics
Conceptual inventory control
Control realization
Fecha de publicación 26-sep-2008
EditorElsevier
Citación Computers & Chemical Engineering 32(9): 1995-2015 (2008)
ResumenIn this work, the systematic approach to a plant-wide control design developed in a previous work by the authors [Antelo, L. T., Otero-Muras, I., Banga, J. R, & Alonso, A. A. (2007). A systematic approach to plant-wide control based on thermodynamics. Computers & and Chemical Engineering, 31(7), 677–691] is applied to derive robust decentralized controllers in the challenging benchmark of the Tennessee Eastman Process (TEP). The hierarchical control design is based on the link between thermodynamics and passivity theory as well as on the fundamentals of process networks. First, the TEP process network is decomposed into abstract mass and energy inventory networks. It is over these subnetworks where conceptual inventory control loops are developed to guarantee the convergence of the mass and energy inventories to a given compact region defined by constant inventories. Thermodynamics gives us a function (the entropy) which has a definite curvature (concavity) over these compact regions of the state space. This function can then be employed on these regions to derive natural storage or function candidates which can be used in designing controllers for stabilizing the network. The last step in the systematic control design procedure will be the realization of the controllers using the available degrees of freedom of the process. The inventory control laws will be obtained as a composition of control loops implemented over the real manipulated variables (degrees of freedom).
Descripción 21 pages, 26 figures.-- Issue title: Networked and Complex Systems S.I. - Control of Networked and Complex Process Systems.-- Available online 13 November 2007.
Versión del editorhttp://dx.doi.org/10.1016/j.compchemeng.2007.10.021
URI http://hdl.handle.net/10261/9478
DOI10.1016/j.compchemeng.2007.10.021
ISSN0098-1354
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