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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

  • Czech description

Classification

  • Type

    J<sub>imp</sub> - Article in a specialist periodical, which is included in the Web of Science database

  • CEP classification

  • 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