A general hybrid semi-parametric process control framework

• Type: Article in International Scientific Journal
• Date: 2012

Authors

Moritz von Stosch (Author) FEUP; Rui Oliveira (Author) Other; Joana Peres (Author) FEUP; Sebastião Feyo de Azevedo (Author) FEUP

Journal

Title: Journal of Process Control

Vol. 22 No. 7

Pages: 1171-1181

ISSN: 0959-1524

Publisher: Elsevier

Indexing

ISI Web of Knowledge - 6 Citations

ISI Web of Science

Scopus - 12 Citations

INSPEC

Scientific classification

FOS: Engineering and technology > Chemical engineering

Associated Projects

PEst-C/EQB/UI0511/2011 - PROJECTO ESTRATÉGICO - UI 511 - 2011-2012

Other information

Authenticus ID: P-002-75C

DOI: 10.1016/j.jprocont.2012.05.004

Abstract (EN): A general hybrid semi-parametric process control framework is proposed in this study. The motivation was the integration of different levels of knowledge systems into a general hybrid semi-parametric control structure, of which the general linear controller or the PID controller are, for instance, particular cases. Several hybrid semi-parametric control structure variants and tuning methods are benchmarked in relation to a simulated bioprocess control problem, namely closed-loop control of the biomass concentration through manipulation of the substrate feeding rate, coupled with the closed-loop control of the dissolved oxygen concentration through the stirring velocity. The results demonstrate that (i) due to the hybrid approach the control loop can be closed without any additional identification experiments; (ii) the incorporation of different types of knowledge can enhance the controller performance, when compared to structures without a priori knowledge; (iii) knowledge incorporation seems to facilitate the tuning of the controller; and (iv) the control action can be analyzed in relation to structural information incorporated into the hybrid controller.

Language: English

Type (Professor's evaluation): Scientific

No. of pages: 11