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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420 documents

  • 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⟩
  • C. Valentin, Couenne F., C. Jallut, M. Tayakout-Fayolle. Dynamic Modeling of a Batch Sludge Settling Column by Partial Differential Non Linear Equations with a Moving Interface, 6 pages, submitted to Conference IFAC ADCHEM2021. 2021. ⟨hal-03026811⟩
  • 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⟩
  • Benjamin Vincent, Françoise Couenne, Laurent Lefèvre, Bernhard Maschke. Port Hamiltonian systems with moving interface: the two-phase Stefan problem. 2020. ⟨hal-03084647⟩
  • Swann Marx, Lucas Brivadis, Daniele Astolfi. Forwarding design for stabilization of a coupled transport equation-ODE with a cone-bounded input nonlinearity. 59th IEEE Conference on Decision and Control, Dec 2020, Jeju Island, South Korea. ⟨hal-02971503v2⟩
  • Mattia Giaccagli, Daniele Astolfi, Vincent Andrieu, Lorenzo Marconi. Sufficient Conditions for Output Reference Tracking for Nonlinear Systems: a Contractive Approach. 59th IEEE Conference on Decision and Control, Dec 2020, Jeju Island, South Korea. ⟨hal-02971526⟩
  • Barbara Browning, Françoise Couenne, Tim Jansen, Maxime Lacroix, Pedro Alvarez, et al.. Kinetic modeling of deep vacuum residue hydroconversion in a pilot scale continuous slurry reactor with recycle. Chemical Engineering Journal Advances, elsevier, 2020, 4, pp.100063. ⟨10.1016/j.ceja.2020.100063⟩. ⟨hal-03084497⟩
  • 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, 2020, 9780367189211. ⟨hal-02969007⟩
  • Swann Marx, Lucas Brivadis, Daniele Astolfi. Forwarding techniques for the global stabilization of dissipative infinite-dimensional systems coupled with an ODE. 2020. ⟨hal-02944073⟩

 

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