Dynamics, Control and Observation of Processes

DYCOP

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.

 Director: Melaz TAYAKOUT-FAYOLLE

Co-directors: Isabelle PITAULT et Vincent ANDRIEU

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424 documents

  • Daniele Astolfi, Pauline Bernard, Romain Postoyan, Lorenzo Marconi. Constrained state estimation for nonlinear systems: a redesign approach based on convexity. IEEE Transactions on Automatic Control, Institute of Electrical and Electronics Engineers, In press. ⟨hal-03157454⟩
  • C. Valentin, Couenne F., C. Jallut, Jean-Marc Choubert, M. Tayakout-Fayolle. Dynamic Modeling of a Batch Sludge Settling Column by Partial Differential Non Linear Equations with a Moving Interface. ADCHEM 2021 11th IFAC SYMPOSIUM on Advanced Control of Chemical Processes, Jun 2021, Venise (virtual), Italy. 6 p. ⟨hal-03026811⟩
  • Swann Marx, Lucas Brivadis, Daniele Astolfi. Forwarding techniques for the global stabilization of dissipative infinite-dimensional systems coupled with an ODE. 2021. ⟨hal-02944073v2⟩
  • Daniele Astolfi, Angelo Alessandri, Luca Zaccarian. Stubborn and Dead-Zone Redesign for Nonlinear Observers and Filters. IEEE Transactions on Automatic Control, Institute of Electrical and Electronics Engineers, 2021, 66 (2), pp.667 – 682. ⟨10.1109/TAC.2020.2989816⟩. ⟨hal-02556577⟩
  • Daniele Astolfi, Luca Zaccarian, Marc Jungers. On the use of low-pass filters in high-gain observers. Systems and Control Letters, Elsevier, 2021, 148, pp.104856. ⟨10.1016/j.sysconle.2020.104856⟩. ⟨hal-03105613⟩
  • Fabrice Ofridam, Noureddine Lebaz, E. Gagnière, Denis Mangin, Abdelhamid Elaïssari. Polymethylmethacrylate derivatives Eudragit E100 and L100: Interactions and complexation with surfactants. Polymers for Advanced Technologies, Wiley, 2021, 32, pp.379-390. ⟨10.1002/pat.5093⟩. ⟨hal-02941359⟩
  • Fabrice Ofridam, Mohamad Tarhini, Waisudin Badri, Wei Liao, Noureddine Lebaz, et al.. Stimuli-Responsive Polymer Coatings. Mavinkere Rangappa S., Parameswaranpillai J., Siengchin S. (Eds). Polymer Coatings: Technologies and Applications, CRC Press, pp.199-225, 2021, 9780367189211. ⟨hal-02969007⟩
  • Fabrice Ofridam, Mohamad Tarhini, Noureddine Lebaz, E. Gagnière, Denis Mangin, et al.. pH‐sensitive polymers: Classification and some fine potential applications. Polymers for Advanced Technologies, Wiley, 2021, pp.1-30. ⟨10.1002/pat.5230⟩. ⟨hal-03132353⟩
  • Yongxin Wu, Boussad Hamroun, Yann Le Gorrec, Bernhard Maschke. Reduced Order LQG Control Design for Infinite Dimensional Port-Hamiltonian Systems. IEEE Transactions on Automatic Control, Institute of Electrical and Electronics Engineers, 2021, 66 (2), pp.865 – 871. ⟨10.1109/TAC.2020.2997373⟩. ⟨hal-03132036⟩
  • Daniele Astolfi, Swann Marx, Nathan van de Wouw. Repetitive Control Design Based on Forwarding for Nonlinear Minimum-Phase Systems. Automatica, Elsevier, In press. ⟨hal-03157572⟩

 

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