Parameter identification of a delayed infinite-dimensional heat-exchanger process based on relay feedback and root loci analysis
The result's identifiers
Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F70883521%3A28140%2F22%3A63556458" target="_blank" >RIV/70883521:28140/22:63556458 - isvavai.cz</a>
Alternative codes found
RIV/71226401:_____/22:N0100658
Result on the web
<a href="https://www.nature.com/articles/s41598-022-13182-5" target="_blank" >https://www.nature.com/articles/s41598-022-13182-5</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1038/s41598-022-13182-5" target="_blank" >10.1038/s41598-022-13182-5</a>
Alternative languages
Result language
angličtina
Original language name
Parameter identification of a delayed infinite-dimensional heat-exchanger process based on relay feedback and root loci analysis
Original language description
The focus of this contribution is twofold. The first part aims at the rigorous and complete analysis of pole loci of a simple delayed model, the characteristic function of which is represented by a quasi-polynomial with a non-delay and a delay parameter. The derived spectrum constitutes an infinite set, making it a suitable and simple-enough representative of even high-order process dynamics. The second part intends to apply the simple infinite-dimensional model for relay-based parameter identification of a more complex model of a heating-cooling process with heat exchangers. Processes of this type and construction are widely used in industry. The identification procedure has two substantial steps. The first one adopts the simple model with a low computational effort using the saturated relay that provides a more accurate estimation than the standard on/off test. Then, this result is transformed to the estimation of the initial characteristic equation parameters of the complex infinite-dimensional heat-exchanger model using the exact dominant-pole-loci assignment. The benefit of this technique is that multiple model parameters can be estimated under a single relay test. The second step attempts to estimate the remaining model parameters by various numerical optimization techniques and also to enhance all model parameters via the Autotune Variation Plus relay experiment for comparison. Although the obtained unordinary time and frequency domain responses may yield satisfactory results for control tasks, the identified model parameters may not reflect the actual values of process physical quantities.
Czech name
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Czech description
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Classification
Type
J<sub>imp</sub> - Article in a specialist periodical, which is included in the Web of Science database
CEP classification
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OECD FORD branch
20205 - Automation and control systems
Result continuities
Project
<a href="/en/project/GF21-45465L" target="_blank" >GF21-45465L: Metaheuristic-based parametric optimization of time-delay models and control systems</a><br>
Continuities
P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)
Others
Publication year
2022
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů
Data specific for result type
Name of the periodical
SCIENTIFIC REPORTS
ISSN
2045-2322
e-ISSN
2045-2322
Volume of the periodical
12
Issue of the periodical within the volume
1
Country of publishing house
DE - GERMANY
Number of pages
33
Pages from-to
1-33
UT code for WoS article
000805846400028
EID of the result in the Scopus database
2-s2.0-85131178889