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Wyszukujesz frazę "artificial pollution" wg kryterium: Temat


Wyświetlanie 1-2 z 2
Tytuł:
Particle swarm optimization of a neural network model for predicting the flashover voltage on polluted cap and pin insulator
Autorzy:
Belkebir, Amel
Bourek, Yacine
Benguesmia, Hani
Powiązania:
https://bibliotekanauki.pl/articles/2146737.pdf
Data publikacji:
2022
Wydawca:
Polska Akademia Nauk. Polskie Towarzystwo Diagnostyki Technicznej PAN
Tematy:
flashover voltage
particle swarm optimization
prediction
artificial pollution
neural network
napięcie przeskoku
optymalizacja roju cząstek
prognozowanie
sieć neuronowa
Opis:
This paper proposes training an artificial neural network (ANN) by a particle swarm optimization (PSO) technique to predict the flashover voltage of outdoor insulators. The analysis follows a series of real-world tests on high-voltage insulators to form a database for implementing artificial intelligence concepts. These tests are performed in various degrees of artificial contamination (distilled brine). Each contamination level shows the amount of contamination in milliliters per area of the isolator. The acquisition database provides values of flashover voltage corresponding to their electrical conductivity in each isolation zone and different degrees of artificial contamination. The results show that ANN trained by PSO can not only provide better prediction results, but also reduce the amount of computation efforts. It is also a more powerful model because: it does not get stuck in a local optimum. In addition, it also has the advantages of simple logic, simple implementation, and underlying intelligence. Compared to the results obtained by practical tests, the results obtained present that the PSO-ANN technique is very effective to predict flashover of high-voltage polluted insulators.
Źródło:
Diagnostyka; 2022, 23, 3; art. no 2022309
1641-6414
2449-5220
Pojawia się w:
Diagnostyka
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Application of artificial neural networks for the prediction of the service conditions of an elastohydrodynamic EHL contact in the presence of solid pollutant
Autorzy:
Mattallah, Sabrina
Kelaiaia, Ridha
Louahem M’Sabah, Hanane
Kerboua, Adlen
Powiązania:
https://bibliotekanauki.pl/articles/27313819.pdf
Data publikacji:
2024
Wydawca:
Polska Akademia Nauk. Polskie Towarzystwo Diagnostyki Technicznej PAN
Tematy:
elastohydrodynamic contact
solid pollution
artificial neural network
wear
Opis:
Lubricated mechanical mechanisms operate under service conditions influenced by several environmental parameters, and their life times may be threatened due to inappropriate use or by the presence of solid contaminants. The objective of this work is to study the effect of three operating parameters, namely: rotational speed , load and kinematic viscosity in the presence of three sizes of solid contaminants , on the degradation of an EHL contact, to predict the ranges of effects that may lead to the damage of the contacting surfaces. In our investigation, anexperimental design of nine trials is used to combine four factors with three levels each to accomplish the experimental investigation. Artificial neural network regression and the desirability function were used for the interpretation and modelling of the responses, whichare: wear , arithmetic mean height , total profile height and maximum profile height . From these methods we observed that the sand grain sizes have a significant impact on the wear and the roughness , but that viscosity has the primary influence on the variation of the roughnesses and . We also found that the quality of the predicted models is very good, with overall determination coefficients of 2 learning = 0.9985 and 2 validation = 0.9996. Several levels of degradation depending on the operating conditions are predicted using the desirability function.
Źródło:
Diagnostyka; 2024, 25, 1; art. no. 2024107
1641-6414
2449-5220
Pojawia się w:
Diagnostyka
Dostawca treści:
Biblioteka Nauki
Artykuł
    Wyświetlanie 1-2 z 2

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