Process modeling stategy combining analytical and data based techniques - I. NN identification of reaction rates with known kinetics coefficients

• Type: Article in International Conference Proceedings Book
• Date: 2007

Authors

Petia Georgieva (Author) FEUP; Cristina Oliveira (Author) FEUP; Fernando Rocha (Author) FEUP; Sebastião Feyo de Azevedo (Author) FEUP

Conference proceedings International

Title: IEEE International Joint Conference on Neural Networks

Pages: 1530-1535

International Joint Conference on Neural Networks

Orlando, Florida, USA, 12 a 17 de Agosto de 2007

Indexing

ISI Proceedings

Scientific classification

FOS: Engineering and technology > Chemical engineering

CORDIS: Technological sciences > Engineering > Chemical engineering

Other information

Abstract (EN): This work deals with the fusion of the data-based and analytical submodels in the process engineering. In contrast to the traditional way of process reaction rates identification by an exhaustive and/or expensive search for the most appropriate parameterized structure, a neural network (NN) based procedure is developed here to identify the reaction rates in the framework of a first principles process model. Since the reaction rates are not measured variables a particular network training structure and algorithm are developed to make possible the supervised NN learning. Our contribution is focused on the general modeling of a class of nonlinear systems representing several industrial processes including crystallization and precipitation, polymerization reactors, distillation columns, biochemical fermentation and biological systems. The proposed algorithm is further applied for estimation of the precipitation rate of calcium phosphate and compared with alternative solutions.

Language: English

Type (Professor's evaluation): Scientific