Methodology for robust multi-parametric control in linear continuous-time systems
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Published version
Author(s)
Sun, Muxin
Villanueva, Mario
Pistikopoulos, EN
Chachuat, B
Type
Journal Article
Abstract
This paper presents an extension of the recent multi-parametric (mp-)NCO-tracking methodology by Sun et al. [Comput. Chem.
Eng. 92:64-77, 2016] for the design of robust multi-parametric controllers for constrained continuous-time linear systems in the
presence of uncertainty. We propose a robust-counterpart formulation and solution of multi-parametric dynamic optimization (mp-
DO), whereby the constraints are backed-o
ff
based on a worst-case propagation of the uncertainty using either interval analysis or
ellipsoidal calculus and an ancillary linear state feedback. We address the case of additive uncertainty, and we discuss approaches
to dealing with multiplicative uncertainty that retain tractability of the mp-NCO-tracking design problem, subject to extra conser-
vativeness. In order to assist with the implementation of these controllers, we also investigate the use of data classifiers based on
deep learning for approximating the critical regions in continuous-time mp-DO problems, and subsequently searching for a critical
region during on-line execution. We illustrate these developments with the case studies of a fluid catalytic cracking (FCC) unit and
a chemical reactor cascade.
Eng. 92:64-77, 2016] for the design of robust multi-parametric controllers for constrained continuous-time linear systems in the
presence of uncertainty. We propose a robust-counterpart formulation and solution of multi-parametric dynamic optimization (mp-
DO), whereby the constraints are backed-o
ff
based on a worst-case propagation of the uncertainty using either interval analysis or
ellipsoidal calculus and an ancillary linear state feedback. We address the case of additive uncertainty, and we discuss approaches
to dealing with multiplicative uncertainty that retain tractability of the mp-NCO-tracking design problem, subject to extra conser-
vativeness. In order to assist with the implementation of these controllers, we also investigate the use of data classifiers based on
deep learning for approximating the critical regions in continuous-time mp-DO problems, and subsequently searching for a critical
region during on-line execution. We illustrate these developments with the case studies of a fluid catalytic cracking (FCC) unit and
a chemical reactor cascade.
Date Issued
2019-01-01
Date Acceptance
2018-09-05
Citation
Journal of Process Control, 2019, 73, pp.58-74
ISSN
0959-1524
Publisher
Elsevier
Start Page
58
End Page
74
Journal / Book Title
Journal of Process Control
Volume
73
Copyright Statement
© 2018 The Authors. Published by Elsevier Ltd. This is an open access article under the CC-BY license.
(http://creativecommons.org/licenses/by/4.0/)
(http://creativecommons.org/licenses/by/4.0/)
Sponsor
Engineering & Physical Science Research Council (EPSRC)
Grant Number
EP/K503381/1
Subjects
0904 Chemical Engineering
Chemical Engineering
Publication Status
Published
Date Publish Online
2018-12-19