Browsing by Author "Kouadri, A. (Supervisor)"

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Identification of distributed parameter systems a neural network based approach
(2016) Benhammada, Ibtissem; Kouadri, A. (Supervisor)
In recent years, Advances in scientific computation and developments in spatially resolved sensor technology have critically enhanced the ability to develop modeling strategies, and experimental techniques for the study of the spatiotemporal response of distributed nonlinear systems. Usual alternatives for the modeling of these systems are some simplifying techniques that seek to capture the distributed system dynamics through lumped parameter models, they can be drastically under-resolved, and, miss important features of the true system response. Robust implementations of distributed system identification algorithms based on detailed spatiotemporal experimental data have, therefore, an important role to play. In this project, we present a methodology for the identification of distributed parameter systems, based on artificial neural network architectures.
An improved thresholding technique for fault detection in a cement rotary Kiln
(2016) Belaghdji, Abdelheq; Guellil, Abderrahmane; Kouadri, A. (Supervisor)
On-line control of nonlinear nonstationarity processes using multivariate statistical methods has recently prompt a lot of interest due to its industrial practical importance. Indeed, basic process control methods do not allow monitoring of such processes. For this purpose, this study proposes a moving window real-time monitoring system based on a Principal Component Analysis scheme. A sliding window of a fixed length is used to determine an appropriate threshold. This thresholding technique will provide an accurate detection. At each one incoming observation, the developed on-line threshold will avoid false alarms and increase non detection faults. It will be shown through experimental results that