About frame estimation of growth functions and robust prediction in bioprocess modeling. (January 2020)

• Record Type: Journal Article
• Authors: Krichen, E.; Rapaport, A.; Fouilland, E.
• Is Part Of: Journal of process control. Volume 85(2020)
• Page Start: 121
• Page End: 135
• Publication Date: 2020-01
• Subjects: Functional estimation -- Interval observers -- Growth functions -- Least square; Process control -- Periodicals; Fabrication -- Contrôle -- Périodiques; Process control; Periodicals; Electronic journals; 660.281
• DOI: 10.1016/j.jprocont.2019.11.009
• Languages: English
• ISSNs: 0959-1524

Abstract

Highlights: We propose a method to obtain functional frames of growth functions from experimental data. Data points are wrapped by graphs of 2 functions without requiring any assumption on the unkwown growth function. Some additional flexibilities of the method are introduced. The approach is illustrated on synthetic and real data for robust predictions. Abstract: We address the problem of determining functional framing from experimental data points in view of robust time-varying predictions, which is of crucial importance in bioprocess monitoring. We propose a method that provides guaranteed functional bounds, instead of sets of parameters values for growth functions such as the classical Monod or Haldane functions commonly used in bioprocess modeling. We illustrate the applicability of the method with bioreactor simulations in batch and continuous mode, as well as on real data. We also present two extensions of the method adding flexibility in its application, and discuss its efficiency in providing guaranteed state estimations.