Dynamics, Control and Observation of Processes


Scientific expertise:

Automatic, Process Engineering, Nonlinear Systems, Observability and Observer Design, Control and Stabilization, Output Control, Multi-Agent Systems, Hybrid Systems, Network Control Systems, Dynamic Process Modeling (from the laboratory scale to industrial scale), thermodynamics, estimation of physicochemical parameters by inverse methods ….

Examples of processes:

– three-phase catalytic processes such as Slurry columns
– fat production processes
– decantation
– catalytic foams
– multi-scale processes
– absorption processes
– reactive extrusion
– crystallization  in emulsion


Process dynamics and control of systems of conservation laws:

The design of energy efficient, reliable and intensive processes requires the development of dynamical models of processes which are accurate and adaptable and take account of their energy and entropy properties. Therefore the main research objective of the group is the development of modeling methods, algorithms for the numerical simulation and the control of processes which explicitly use the physical properties of the processes.

In a first instance, dynamical models using bond-graph modeling and the parameter identification of complex, network-structured processes are investigated by the use of measurements of transient behavior. Different multi-scale processes are considered such as adsorption, reactive extrusion processes, heat pumps, thermal stocks using phase changes in fluids and crystallization in emulsion processes, involving mass and heat transport in heterogeneous and reactive media with moving interface.

In a second instance, nonlinear control laws are developed, based on passivity techniques and using  invariants and balance equations of thermodynamically-based functions. For this goal our research group develops different formulation of processes, in particular the Continuous Stirred Tank Reactor, as quasi-port Hamiltonian systems or input-output contact systems. Control laws for the stabilization of such processes are then developed based on structure preserving feedback control such as IDA-PBC.

In a third instance the research group works on the control of systems of conservation laws, eventually augmented with source terms due for instance to the entropy creation terms. Infinite-dimensional port-Hamiltonian systems with boundary port variables are considered and specific spatial discretization algorithms are developed which preserve the Dirac structure underlying the port-Hamiltonian systems. The existence of solutions and the relation with boundary control systems and well-posed systems is also investigated, based on the semi-group theory or on classical fixed-point techniques. Finally the stabilization of nonlinear systems of conservation laws using Riemann invariants and gain scheduling is addressed.


Co-directors: Isabelle PITAULT et Vincent ANDRIEU

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420 documents

  • M. Taghizadeh, C. Jallut, M. Tayakout-Fayolle, J. Lieto. Numerical simulation of non-isothermal gas–liquid absorption with chemical reaction on a spherical laminar film Application to phosgene absorption into aqueous sodium hydroxide solutions. Chemical Engineering Science, Elsevier, 1999, 54 (6), pp.807-818. ⟨10.1016/S0009-2509(98)00281-4⟩. ⟨hal-02097113⟩
  • Philippe Manon, Claire Valentin. About the trajectory synthesis to go back to nominal mode for a class of hybrid systems. Journal Européen des Systèmes Automatisés (JESA), Lavoisier, 1999, 33 (8-9), pp.995-1014. ⟨hal-00610539⟩
  • M. Farza, H. Hammouri, C. Jallut, J. Lieto. State observation of a nonlinear system: Application to (bio)chemical processes. AIChE Journal, Wiley, 1999, 45 (1), pp.93-106. ⟨10.1002/aic.690450109⟩. ⟨hal-02097105⟩
  • Tarik Dellero, Rahal Boussehain, Christian Jallut, Philippe Touzain, Michel Feidt. Thermal conductivity determination in the case of a porous medium made up of carbon fibres. High Temperatures-High Pressures, Old City Publishing, 1999, 31 (4), pp.401-411. ⟨10.1068/htrt165⟩. ⟨hal-02097111⟩
  • M. Farza, H. Hammouri, C. Jallut, V. Chouri, J. Lieto. Nonlinear estimation strategies for parameter estimation in chemical reactors. Computers & Chemical Engineering, Elsevier, 1998, 22, pp.S687-S690. ⟨10.1016/S0098-1354(98)00125-2⟩. ⟨hal-02097101⟩
  • Ronan Champagnat, Hervé Pingaud, Hassane Alla, C. Valentin-Roubinet, Robert Valette. A gas storage example as a benchmark for hybrid modelling. European Journal of Automation, 1998, 32 (9-10), pp.1233-1253. ⟨hal-01976869⟩
  • Mélaz Tayakout-Fayolle, M. Tayakout, B. Bernauer, Y. Toure, J. Sanchez. Modelling and simulation of a catalytic membrane reactor. Simulation Practice and Theory, Elsevier, 1995, 2 (4-5), pp.205-219. ⟨10.1016/0928-4869(94)00016-9⟩. ⟨hal-02432543⟩
  • C. Jallut, J. Lenoir, C. Bardot, C. Eyraud. Thermoporometry – Modeling and simulation of a mesoporous solid. Journal of Membrane Science, Elsevier, 1992, 68 (3), pp.271-282. ⟨10.1016/0376-7388(92)85028-H⟩. ⟨hal-02097086⟩
  • T. Poizat, C. Jallut, A. Accary, J. Lieto. A novel experimental technique for measurement of mass transfer between liquids and gas bubbles in agitated vessels: Application to highly viscous liqu. The Chemical Engineering Journal, Elsevier, 1992, 48 (1), pp.41-48. ⟨10.1016/0300-9467(92)85005-T⟩. ⟨hal-02097082⟩


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