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Wyszukujesz frazę "multi-objective" wg kryterium: Temat

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    Wyświetlanie 1-5 z 5
    Tytuł:
    Dedicated system for design, analysis and optimization of AC-DC converters
    Autorzy:
    Piasecki, S.
    Szmurlo, R.
    Rabkowski, J.
    Jasiński, M.
    Powiązania:
    https://bibliotekanauki.pl/articles/201404.pdf
    Data publikacji:
    2016
    Wydawca:
    Polska Akademia Nauk. Czytelnia Czasopism PAN
    Tematy:
    AC-DC converter
    multi-objective optimization
    design methodology
    distributed generation systems
    konwerter AC-DC
    optymalizacja wielokryterialna
    metodologia projektowania
    generacja rozproszona
    Opis:
    This paper presents an originally-developed system for design and optimization of AC-DC converters dedicated in particular to operation in distributed generation systems. The proposed procedure is based on a multi-objective discrete optimization and expert knowledge of electrical engineering, especially power electronics. The required accuracy of calculations is obtained by using the database with real components, while the parameters applied in calculations are based on parameters provided by the manufacturer. The paper presents the foundations and basic system properties, the design and optimization process, and selected optimization results, obtained with a fully functional prototype of the design and optimization system (DaOS).
    Źródło:
    Bulletin of the Polish Academy of Sciences. Technical Sciences; 2016, 64, 4; 897-905
    0239-7528
    Pojawia się w:
    Bulletin of the Polish Academy of Sciences. Technical Sciences
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Recent developments in simulation-driven multi-objective design of antennas
    Autorzy:
    Koziel, S.
    Bekasiewicz, A.
    Powiązania:
    https://bibliotekanauki.pl/articles/201914.pdf
    Data publikacji:
    2015
    Wydawca:
    Polska Akademia Nauk. Czytelnia Czasopism PAN
    Tematy:
    computer-aided design
    CAD
    antenna design
    multi-objective optimization
    surrogate models
    evolutionary algorithms
    projektowanie wspomagane komputerowo
    projektowanie anteny
    model zastępczy
    algorytmy ewolucyjne
    Opis:
    This paper addresses computationally feasible multi-objective optimization of antenna structures. We review two recent techniques that utilize the multi-objective evolutionary algorithm (MOEA) working with fast antenna replacement models (surrogates) constructed as Kriging interpolation of coarse-discretization electromagnetic (EM) simulation data. The initial set of Pareto-optimal designs is subsequently refined to elevate it to the high-fidelity EM simulation accuracy. In the first method, this is realized point-by-point through appropriate response correction techniques. In the second method, sparsely sampled high-fidelity simulation data is blended into the surrogate model using Co-kriging. Both methods are illustrated using two design examples: an ultra-wideband (UWB) monocone antenna and a planar Yagi-Uda antenna. Advantages and disadvantages of the methods are also discussed.
    Źródło:
    Bulletin of the Polish Academy of Sciences. Technical Sciences; 2015, 63, 3; 781-789
    0239-7528
    Pojawia się w:
    Bulletin of the Polish Academy of Sciences. Technical Sciences
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Handling fuzzy systems’ accuracy-interpretability trade-off by means of multi-objective evolutionary optimization methods – selected problems
    Autorzy:
    Gorzałczany, M. B.
    Rudziński, F.
    Powiązania:
    https://bibliotekanauki.pl/articles/199824.pdf
    Data publikacji:
    2015
    Wydawca:
    Polska Akademia Nauk. Czytelnia Czasopism PAN
    Tematy:
    accuracy and interpretability of fuzzy rule-based systems
    multi-objective evolutionary optimization
    genetic computations
    fuzzy systems
    dokładność systemów rozmytych
    optymalizacja
    obliczenia genetyczne
    systemy rozmyte
    Opis:
    The paper addresses several open problems regarding the automatic design of fuzzy rule-based systems (FRBSs) from data using multi-objective evolutionary optimization algorithms (MOEOAs). In particular, we propose: a) new complexity-related interpretability measure, b) efficient strong-fuzzy-partition implementation for improving semantics-related interpretability, c) special-coding-free implementation of rule base and original genetic operators for its processing, and d) implementation of our ideas in the context of well-known MOEOAs such as SPEA2 and NSGA-II. The experiments demonstrate that our approach is an effective tool for handling FRBSs’ accuracy-interpretability trade-off, i.e, designing FRBSs characterized by various levels of such a trade-off (in particular, for designing highly interpretability-oriented systems of still competitive accuracy).
    Źródło:
    Bulletin of the Polish Academy of Sciences. Technical Sciences; 2015, 63, 3; 791-798
    0239-7528
    Pojawia się w:
    Bulletin of the Polish Academy of Sciences. Technical Sciences
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    A novel hybrid cuckoo search algorithm for optimization of a line-start PM synchronous motor
    Autorzy:
    Knypiński, Łukasz
    Powiązania:
    https://bibliotekanauki.pl/articles/2204509.pdf
    Data publikacji:
    2023
    Wydawca:
    Polska Akademia Nauk. Czytelnia Czasopism PAN
    Tematy:
    hybrid cuckoo search algorithm
    heuristic algorithms
    multi-objective optimization
    permanent magnet synchronous motor
    PMSM
    algorytm kukułki hybrydowy
    algorytm Cuckoo
    algorytm heurystyczny
    optymalizacja wielocelowa
    silnik synchroniczny z magnesem trwałym
    Opis:
    The paper presents a novel hybrid cuckoo search (CS) algorithm for the optimization of the line-start permanent magnet synchronous motor (LSPMSM). The hybrid optimization algorithm developed is a merger of the heuristic algorithm with the deterministic Hooke–Jeeves method. The hybrid optimization procedure developed was tested on analytical benchmark functions and the results were compared with the classical cuckoo search algorithm, genetic algorithm, particle swarm algorithm and bat algorithm. The optimization script containing a hybrid algorithm was developed in Delphi Tiburón. The results presented show that the modified method is characterized by better accuracy. The optimization procedure developed is related to a mathematical model of the LSPMSM. The multi-objective compromise function was applied as an optimality criterion. Selected results were presented and discussed.
    Źródło:
    Bulletin of the Polish Academy of Sciences. Technical Sciences; 2023, 71, 1; art. no. e144586
    0239-7528
    Pojawia się w:
    Bulletin of the Polish Academy of Sciences. Technical Sciences
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Multi-objective optimization of PCM-fin structure for staggered Li-ion battery packs
    Autorzy:
    Qiu, Chenghui
    Wu, Chongtian
    Yuan, Xiaolu
    Wu, Linxu
    Yang, Jiaming
    Shi, Hong
    Powiązania:
    https://bibliotekanauki.pl/articles/27311457.pdf
    Data publikacji:
    2023
    Wydawca:
    Polska Akademia Nauk. Czasopisma i Monografie PAN
    Tematy:
    staggered arrangement
    phase change material
    fin
    multi-objective optimization
    thermal management
    entropy weight
    TOPSIS method
    technique for order of preference by similarity to ideal solution
    układ naprzemienny
    materiał o przemianie fazowej
    materiał zmieniający fazę
    płetwa
    optymalizacja wielocelowa
    optymalizacja wieloobiektowa
    zarządzanie ciepłem
    entropia wagi
    metoda TOPSIS
    technika porządkowania preferencji według podobieństwa do idealnego rozwiązania
    Opis:
    Endurance capability is a key indicator to evaluate the performance of electric vehicles. Improving the energy density of battery packs in a limited space while ensuring the safety of the vehicle is one of the currently used technological solutions. Accordingly, a small space and high energy density battery arrangement scheme is proposed in this paper. The comprehensive performance of two battery packs based on the same volume and different space arrangements is compared. Further, based on the same thermal management system (PCM-fin system), the thermal performance of staggered battery packs with high energy density is numerically simulated with different fin structures, and the optimal fin structure parameters for staggered battery packs at a 3C discharge rate are determined using the entropy weight-TOPSIS method. The result reveals that increasing the contact thickness between the fin and the battery (X) can reduce the maximum temperature, but weaken temperature homogeneity. Moreover, the change of fin width (A) has no significant effect on the heat dissipation performance of the battery pack. Entropy weight-TOPSIS method objectively assigns weights to both maximum temperature (Tmax) and temperature difference (DT) and determines the optimal solution for the cooling system fin parameters. It is found that when X = 0:67 mm, A = 0:6 mm, the staggered battery pack holds the best comprehensive performance.
    Źródło:
    Bulletin of the Polish Academy of Sciences. Technical Sciences; 2023, 71, 4; art. no. e145677
    0239-7528
    Pojawia się w:
    Bulletin of the Polish Academy of Sciences. Technical Sciences
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
      Wyświetlanie 1-5 z 5

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