Control Quality Assessment for Processes With Asymmetric Properties and its Application to pH Reactor

Paweł Domański , Maciej Ławryńczuk

Abstract

The majority of processes in chemical industry is nonlinear. However we often take advantage of linear approximation and analysis as the useful simpli�cation. Nonetheless, one has to remember that the reality is often complex, nonlinear and full of unknown unknowns. One of the forgotten aspects in control engineering is connected with the symmetricity. Asymmetric properties appear, when the process or instrumentation introduces nonlinearities. Control systems are then exposed to the asymmetrical behavior and should properly react, while their performance measures have to take them into account. This paper proposes robust control performance indexes in form of the M-estimator using logistic function denoted �H and �-stable distribution scale factor . Additionally, their application procedure in industrial chemical engineering environment is proposed. The approach is illustrated with an example of the pH neutralization process.
Author Paweł Domański (FEIT / AK)
Paweł Domański,,
- The Institute of Control and Computation Engineering
, Maciej Ławryńczuk (FEIT / AK)
Maciej Ławryńczuk,,
- The Institute of Control and Computation Engineering
Journal seriesIEEE Access, ISSN 2169-3536
Issue year2020
Vol8
Pages94535-94546
Publication size in sheets0.55
Keywords in EnglishAsymmetry, control performance assessment, fat-tails, MPC, pH neutralization
ASJC Classification1700 General Computer Science; 2200 General Engineering; 2500 General Materials Science
DOIDOI:10.1109/ACCESS.2020.2993102
Languageen angielski
File
DomanskiLawrynczuk IEEEAccess2020.pdf 7.19 MB
Score (nominal)100
Score sourcejournalList
ScoreMinisterial score = 100.0, 17-06-2020, ArticleFromJournal
Publication indicators Scopus Citations = 0; Scopus SNIP (Source Normalised Impact per Paper): 2018 = 1.718; WoS Impact Factor: 2018 = 4.098 (2) - 2018=4.54 (5)
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