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Algebraic robust control of a closed circuit heating-cooling system with a heat exchanger and internal loop delays

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dc.title Algebraic robust control of a closed circuit heating-cooling system with a heat exchanger and internal loop delays en
dc.contributor.author Pekař, Libor
dc.contributor.author Prokop, Roman
dc.relation.ispartof Applied Thermal Engineering
dc.identifier.issn 1359-4311 Scopus Sources, Sherpa/RoMEO, JCR
dc.date.issued 2017
utb.relation.volume 113
dc.citation.spage 1464
dc.citation.epage 1474
dc.type article
dc.language.iso en
dc.publisher Elsevier
dc.identifier.doi 10.1016/j.applthermaleng.2016.11.150
dc.relation.uri https://www.sciencedirect.com/science/article/pii/S1359431116334986
dc.subject Algebraic control design en
dc.subject Heat exchanger en
dc.subject Robustness en
dc.subject Time-delay systems en
dc.subject Two-Feedback-Controllers (TFC) en
dc.description.abstract This study demonstrates the use of a simple algebraic controller design for a cooling-heating plant with a through-flow air-water heat exchanger that evinces long internal delays with respect to the robustness to plant model uncertainties and variable ambient temperature conditions during the season. The advantage of the proposed design method consists in that the delays are not approximated but fully considered. Moreover, the reduction of sensitivity to model parameters’ variations yields the better applicability regardless modeling errors or environmental fluctuations. The infinite-dimensional mathematical model of the plant has been obtained by using anisochronic modeling principles. The key tool for the design is the ring special of quasipolynomial meromorphic functions (RQM). The Two-Feedback-Controllers (TFC) rather than the simple negative control feedback loop is utilized, which enables to solve the reference tracking and disturbance rejection independently and more efficiently. The eventual controller is then tuned such that robust stability and robust performance requirements are fulfilled. The tuning procedure is supported by a performance optimization idea. Since the originally obtained controller is of the infinite-dimensional nature, a possible way how to substitute it by a simplified finite-dimensional one is proposed for engineering practice. The functionality of both the controllers is compared and verified by simulations as well as by real measurements which prove a very good performance. © 2016 Elsevier Ltd en
utb.faculty Faculty of Applied Informatics
dc.identifier.uri http://hdl.handle.net/10563/1006802
utb.identifier.obdid 43877002
utb.identifier.scopus 2-s2.0-85000885332
utb.identifier.wok 000394723300141
utb.identifier.coden ATENF
utb.source j-scopus
dc.date.accessioned 2017-02-28T15:11:28Z
dc.date.available 2017-02-28T15:11:28Z
dc.description.sponsorship European Regional Development Fund under the project CEBIA-Tech Instrumentation [CZ.1.05/2.1.00/19.0376]
utb.contributor.internalauthor Pekař, Libor
utb.contributor.internalauthor Prokop, Roman
utb.fulltext.affiliation Libor Pekař * , Roman Prokop Department of Automation and Control Engineering, Faculty of Applied Informatics, Tomas Bata University in Zlín, Nad Stráněmi 4511, 76005 Zlín, Czech Republic * Corresponding author. E-mail address: pekar@fai.utb.cz (L. Pekař).
utb.fulltext.dates Received 17 August 2016 Revised 16 November 2016 Accepted 20 November 2016 Available online 22 November 2016
utb.fulltext.sponsorship This work was supported by the European Regional Development Fund under the project CEBIA-Tech Instrumentation No. CZ.1.05/2.1.00/19.0376.
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