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    Wyświetlanie 1-3 z 3
    Tytuł:
    Robust linear predictor as EEG fluctuation analyzer in diagnosis of Alzheimers disease
    Autorzy:
    Zachová, D.
    Kukal, J.
    Vyšata, O.
    Powiązania:
    https://bibliotekanauki.pl/articles/229451.pdf
    Data publikacji:
    2011
    Wydawca:
    Polska Akademia Nauk. Czytelnia Czasopism PAN
    Tematy:
    Alzheimer's diseases
    EEG
    quasi-stationarity
    linear predictor
    robust identification
    Opis:
    The paper is oriented to EEG signal analysis, which is focused to quasi-stationarity hypothesis that the statistical properties of the channel signal fluctuate in time. Robust linear predictor is used for short segments of EEG as low-pass filter and the difference between the raw EEG and filter output was subject of statistical testing. Novelty is in the fluctuation measurement which enables to classify the Alzheimer's disease patients against controls.
    Źródło:
    Archives of Control Sciences; 2011, 21, 2; 121-133
    1230-2384
    Pojawia się w:
    Archives of Control Sciences
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Dead-time compensation in continuous-review perishable inventory systems with a remote supply source
    Autorzy:
    Ignaciuk, P.
    Bartoszewicz, A.
    Powiązania:
    https://bibliotekanauki.pl/articles/229449.pdf
    Data publikacji:
    2011
    Wydawca:
    Polska Akademia Nauk. Czytelnia Czasopism PAN
    Tematy:
    inventory control
    perishable inventory systems
    time-delay systems
    Smith predictor
    Opis:
    In this paper we address the problem of efficient control of continuous-review perishable inventory systems. In the considered systems the goods at a distribution center used to fulfill unknown, variable demand deteriorate at a constant rate, and are replenished with delay from a remote supply source. We develop a new supply policy which incorporates the Smith predictor for dead-time compensation. A number of properties of the designed policy is formulated, and strictly proved. In particular, we show that the policy guarantees that the assigned storage space at the distribution center is never exceeded which means that the cost of emergency storage is eliminated. Moreover, we show that with appropriately chosen controller parameters all of the demand imposed at the distribution center is realized from the readily available resources, thus ensuring the maximum service level.
    Źródło:
    Archives of Control Sciences; 2011, 21, 1; 61-84
    1230-2384
    Pojawia się w:
    Archives of Control Sciences
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    The combined effect of fractional filter and Smith Predictor for enhanced closed-loop performanceof integer order time-delay systems: some investigations
    Autorzy:
    Nagarsheth, Shaival Hemant
    Sharma, Shambhu Nath
    Powiązania:
    https://bibliotekanauki.pl/articles/229571.pdf
    Data publikacji:
    2020
    Wydawca:
    Polska Akademia Nauk. Czytelnia Czasopism PAN
    Tematy:
    generalized fractional controller
    Smith predictor
    time delay system
    generalized inverse
    Bode’s ideal transfer function
    Opis:
    This paper proposes a generalized fractional controller for integer order systems with time delay. The fractional controller structure is so adopted to have a combined effect of fractional filter and Smith predictor. Interestingly, the resulting novel controller can be decomposed into fractional filter cascaded with an integer order PID controller. The method is applied to two practical examples i.e. liquid level system and Shell control fractionator system. The closed-loop responses resulting from the proposed method are compared with that of the available methods in the literature. For quantitative evaluations of the proposed method, Integral Absolute Error (IAE) and Integral Square Control Input (ISCI) performance criteria are employed. The proposed method effectively enhances the closed-loop response by improving the IAE values, reducing the control effort inputs to achieve the desired output. The disturbance rejection and robustness tests are also carried out. The robustness test reveals a significant improvement in the maximum absolute sensitivity measure. That is displayed in numerical simulations of the paper.
    Źródło:
    Archives of Control Sciences; 2020, 30, 1; 47-76
    1230-2384
    Pojawia się w:
    Archives of Control Sciences
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
      Wyświetlanie 1-3 z 3

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