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Optimizacija delovanja absorpcijskega procesa z uporabo diskretnega krmilnika = Optimization of operation of the absorption process by use of a discrete controllerGjerkeš, Henrik ; Gašperšič, BrankoAbsorpcijske toplotne naprave so izpostavljene stalnim spremembam obratovalnih razmer. Razvili smo adaptivni krmilni sistem, ki se samodejno prilagaja razmeram pri procesu in ga preizkusili na ... enostopenjski laboratorijski absorpcijski toplotni črpalki z delovno raztopino H2O-LiBr. Krmilni sistem se prilagaja na podlagi informacij, ki jih dobi iz dinamičnega modela procesa. Ta se ocenjuje v realnem času z algoritmom rekurzivne parametrične identifikacije, v katerem je uporabljena metoda najmanjših kvadratov s spremenljivim faktorjem pozabljanja. Parametri regulatorja se na spremembo delovne točke procesa adaptirajo v skladu z ustreznim povratnozveznim krmilnim zakonom. V članku je prikazano delovanje kompenzacijskega krmilnika s predpisovanjem polov in ničel sistemske prenosne funkcije. Absorpcijska toplotna črpalka z adaptivnim krmilnim sistemom deluje v širokem območju delovnih točk brez bistvenih nihanj njenih lastnosti. Sistem se je izkazal z dobrim kompenziranjem tako zunaj kakor znotraj samega procesa navzočih motenj različnih amplitud in frekvenc. Primeren je tudi za krmiljenje sorodnih procesov, saj vsebuje mehanizem za identifikacijo strukture modela in ne zahteva vnaprejšnjega znanja o fizikalnih lastnostih procesa.Source: Strojniški vestnik = Journal of mechanical engineering. - ISSN 0039-2480 (Let. 44, št. 7/8, 1998, str. 237-248)Type of material - article, component partPublish date - 1998Language - slovenian, englishCOBISS.SI-ID - 2743835
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source: Strojniški vestnik = Journal of mechanical engineering. - ISSN 0039-2480 (Let. 44, št. 7/8, 1998, str. 237-248)
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Gjerkeš, Henrik | 12359 |
Gašperšič, Branko | 00818 |
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