Non Linear Systems and Process


Scientific expertises:

Automatic, Nonlinear Systems, Observability and Observer Design, Control and Stabilization


The research topic of the SNLEP team concerns the theorical development and implementation of tools devoted to: Analyze, Model, Simulate, Control and Optimize Systems in Process Engineering.

Our theoretical developments are motivated by practical applications encountered through collaborations with industrial and academic partners. More specifically, our work focuses on model design and reduction, parametric identification and observation, diagnosis and control.

  • The Modeling concerns polymerization crystallization freeze and bio- processes. We exploit mainly heat balance and matter conservation law, heat and matter diffusion, mass transfer between phases and population balance in particulate processes to develop models suitable for simulation, observation and control.
  • Identification exploits tools coming from model predictive control and refers to experimental design in order to facilitate online parameter identification.
  • The observation topic refers to the design of algorithm to estimate online parameters and unknown quantities of the model.
  • Fault diagnosis refers to the detection of fault which is an unpermitted deviation of at least one characteristic property of the process from the acceptable, usual, standard condition.
  • The control topic focuses on the stabilization problem for finite and infinite dimensional systems, the tracking and control problem using optimization tools.

The chemical processes mainly concerned by the SNLEP team are polymerization processes, crystallization processes and drying processes.



 Director of SNLEP: Hassan Hammouri


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246 documents

  • Nida Sheibat-Othman, Gilles Fevotte, Timothy Mckenna. Polymer Composition Control in Emulsion Co- and Terpolymerizations. Industrial and engineering chemistry, American Chemical Society (ACS), 2002, 41, pp.1261-1275. ⟨hal-00366383⟩
  • C.-M. Astorga, Nida Sheibat-Othman, Sami Othman, Hassan Hammouri, Timothy Mckenna. Nonlinear continuous-discrete observers: application to emulsion polymerization reactors. Control Engineering Practice, Elsevier, 2002, 10 (1), pp.3-13. ⟨10.1016/S0967-0661(01)00100-9⟩. ⟨hal-00366388⟩
  • Hassan Hammouri, Boubekeur Targui, F. Armanet. High gain observer based on a triangular structure. International Journal of Robust and Nonlinear Control, Wiley, 2002, 12 (6), pp.497-518. ⟨10.1002/rnc.638⟩. ⟨hal-00524454⟩
  • Krishna Busawon, Hamed yahoui, Hassan Hammouri, Guy Grellet. A nonlinear observer for induction motors. European Physical Journal: Applied Physics, EDP Sciences, 2001, 15 (3), pp.181-188. ⟨10.1051/epjap:2001181⟩. ⟨hal-00179687⟩
  • Pascal Dufour, Estelle Courtial, youssoufi Touré, Pierre Laurent. Trajectory tracking strategy for a non-linear distributed parameter process. IFAC-IEEE European Control Conference (ECC), Sep 2001, Porto, Portugal. Paper 4993. ⟨hal-00353049⟩
  • Hassan Hammouri, Pousga Kabore, Michel Kinnaert. Geometric Approach for Fault Detection and Isolation for Bilinear Systems. IEEE Transactions on Automatic Control, Institute of Electrical and Electronics Engineers, 2001, 46 (09), pp.1451 – 1455. ⟨10.1109/9.948476⟩. ⟨hal-00461779⟩
  • Nida Sheibat-Othman, Gilles Févotte, Timothy Mckenna. ON-LINE MONITORING OF EMULSION TERPOLYMERIZATION PROCESSES. Polymer Reaction Engineering, Taylor & Francis, 2001, 9 (4), pp.271-296. ⟨hal-00366389⟩
  • Nida Sheibat-Othman. ADVANCED STRATEGIES FOR COMPOSITION CONTROL IN SEMI-CONTINUOUS EMULSION POLYMERIZATION. Chemical and Process Engineering. Université Claude Bernard – Lyon I, 2000. English. ⟨tel-00366694⟩
  • H. Hammouri, Sami Othman, P. Kabore. On-Line Fault Detection and Isolation for a Hydraulic Process. An Observer-Based Approach. IFAC Proceedings Volumes, Elsevier, 2000, 33 (11), pp.225 – 229. ⟨10.1016/S1474-6670(17)37364-0⟩. ⟨hal-01902716⟩
  • D.J. Rita, G. Févotte, T.F. Mckenna, Sami Othman, E.L. Lima, et al.. Modelling and Observation of the Emulsion Copolymerization of Styrene with α-Methylstyrene. IFAC Proceedings Volumes, Elsevier, 2000, 33 (10), pp.359 – 364. ⟨10.1016/S1474-6670(17)38566-X⟩. ⟨hal-01902721⟩

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