Model predictive control for continuous lactide ring‐opening polymerization processes - CNRS - Centre national de la recherche scientifique Accéder directement au contenu
Article Dans Une Revue Asian Journal of Control Année : 2020

Model predictive control for continuous lactide ring‐opening polymerization processes

Résumé

Polylactic acid (PLA) is an attractive environment-friendly thermoplastic that is bio-sourced and biodegradable. PLA is industrially produced by the ring-opening polymerization of Lactide. This reaction is sensitive to drifts in the operating conditions and impurities in the raw materials that may affect the reaction rate as well as the polymer properties, which can be very costly in continuous processes. It is therefore crucial to employ a control strategy that allows recovering the nominal conditions and maintaining the desired properties and conversion level in case of drift. Three control strategies are discussed in this paper: Proportional-Integral controller (PI), dynamic optimization and Model Predictive Control (MPC). The proposed approaches are validated by simulation of a continuous PLA process constituted of three cascade reactors including one loop reactor in the middle. Besides the coupling of inputs and outputs, the process model is highly nonlinear and the control is done only on the boundaries. The results show that the open-loop optimization strategy provides better performance compared to the PI controller if the disturbance is assumed to be measured. The MPC also shows superior performances provided that the disturbance is first estimated. A polynomial model is developed to predict the non-measured disturbance based on the measured outputs.
Fichier principal
Vignette du fichier
article_A_J_simple_template1.pdf (543.66 Ko) Télécharger le fichier
Origine : Fichiers produits par l'(les) auteur(s)

Dates et versions

hal-02991993 , version 1 (06-12-2020)

Identifiants

Citer

Nawel Afsi, Sami Othman, Toufik Bakir, Liborio Costa, Anis Sakly, et al.. Model predictive control for continuous lactide ring‐opening polymerization processes. Asian Journal of Control, 2020, ⟨10.1002/asjc.2453⟩. ⟨hal-02991993⟩
238 Consultations
152 Téléchargements

Altmetric

Partager

Gmail Facebook X LinkedIn More