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Wyszukujesz frazę "RBF network" wg kryterium: Temat


Wyświetlanie 1-12 z 12
Tytuł:
Friction modeling of Al-Mg alloy sheets based on multiple regression analysis and neural networks
Autorzy:
Lemu, H. G.
Trzepieciński, T.
Kubit, A.
Fejkiel, R.
Powiązania:
https://bibliotekanauki.pl/articles/102791.pdf
Data publikacji:
2017
Wydawca:
Stowarzyszenie Inżynierów i Techników Mechaników Polskich
Tematy:
friction coefficient
friction
GRNN
neural networks
RBF network
sheet metal forming
Opis:
This article reports a proposed approach to a frictional resistance description in sheet metal forming processes that enables determination of the friction coefficient value under a wide range of friction conditions without performing time-consuming experiments. The motivation for this proposal is the fact that there exists a considerable amount of factors affect the friction coefficient value and as a result building analytical friction model for specified process conditions is practically impossible. In this proposed approach, a mathematical model of friction behaviour is created using multiple regression analysis and artificial neural networks. The regression analysis was performed using a subroutine in MATLAB programming code and STATISTICA Neural Networks was utilized to build an artificial neural networks model. The effect of different training strategies on the quality of neural networks was studied. As input variables for regression model and training of radial basis function networks, generalized regression neural networks and multilayer networks the results of strip drawing friction test were utilized. Four kinds of Al-Mg alloy sheets were used as a test material.
Źródło:
Advances in Science and Technology. Research Journal; 2017, 11, 1; 48-57
2299-8624
Pojawia się w:
Advances in Science and Technology. Research Journal
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Neural Network based control of Robot Manipulator
Autorzy:
Ohri, Arnav
Salim, Salim
Powiązania:
https://bibliotekanauki.pl/articles/1075537.pdf
Data publikacji:
2019
Wydawca:
Przedsiębiorstwo Wydawnictw Naukowych Darwin / Scientific Publishing House DARWIN
Tematy:
RBF Neural Network
Robotic Manipulator
Sliding Mode Control
Opis:
This article proposes an RBFNN (Radial Basis Function Neural Network) and sliding mode based controller to manipulate the robot manipulator. The technique used has been based on a sliding mode control approach that can drive the system towards a sliding surface by Gaussian radial basis function neural network based tuned-controller.
Źródło:
World Scientific News; 2019, 121; 9-16
2392-2192
Pojawia się w:
World Scientific News
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Neural networks for function approximation in dynamic modelling
Autorzy:
Nedbálek, J.
Powiązania:
https://bibliotekanauki.pl/articles/2069707.pdf
Data publikacji:
2008
Wydawca:
Uniwersytet Morski w Gdyni. Polskie Towarzystwo Bezpieczeństwa i Niezawodności
Tematy:
reliability
Monte Carlo
RBF neural network
simulation
temperature
Opis:
The paper demonstrates the comparsion of Monte Carlo simulation (MC) algorithm with the Radial Basis Function (RBF) neural network enhancement of the same algorithm in the reliability case study. In our test, we dispose of the tank containing liquid water – its temperature process variable evolves deterministicly according to the differential equation, which solution is known. All component failures are considered as a stochastic events. In the case of surpassing temperature treshhold of the liquid inside the tank, we interpret the situation as the system failure. With regard to process dynamics, we attempt to evaluate the tank system unreliability related to the initiative input parameters setting. The neural network is used in equation coeficients calculation, which is executed in each transient state. Due to the neural networks, for some of the initial component settings, we can achieve the results of computation faster than in classical way of coeficients calculating and substituting into the equation.
Źródło:
Journal of Polish Safety and Reliability Association; 2008, 2; 255--259
2084-5316
Pojawia się w:
Journal of Polish Safety and Reliability Association
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Rotor fault detector of the converter-fed induction motor based on RBF neural network
Autorzy:
Kowalski, C. T.
Kaminski, M.
Powiązania:
https://bibliotekanauki.pl/articles/200439.pdf
Data publikacji:
2014
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
induction motor
rotor fault
diagnostic symptom
RBF neural network
fault detector
Opis:
This paper deals with the application of the Radial Basis Function (RBF) networks for the induction motor fault detection. The rotor faults are analysed and fault symptoms are described. Next the main stages of the design methodology of the RBF-based neural detectors are described. These networks are trained and tested using measurement data of the stator current (MCSA). The efficiency of developed RBF-NN detectors is evaluated. Furthermore, influence of neural networks complexity and parameters of the RBF activation function on the quality of data classification is shown. The presented neural detectors are tested with measurement data obtained in the laboratory setup containing the converter-fed induction motor (IM) and changeable rotors with a different degree of damages.
Źródło:
Bulletin of the Polish Academy of Sciences. Technical Sciences; 2014, 62, 1; 69-76
0239-7528
Pojawia się w:
Bulletin of the Polish Academy of Sciences. Technical Sciences
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Prognozowanie uszkodzeń przekładni mostu napędowego z wykorzystaniem wstępnego przetwarzania sygnału drgań w połączeniu z sieciami neuronowymi typu RBF
Rear axle gear damage prediction using vibration signal preprocessing coupled with RBF neural networks
Autorzy:
Shao, Y.
Li, X.
Mechefske, Ch. K.
Chen, Z.
Powiązania:
https://bibliotekanauki.pl/articles/301429.pdf
Data publikacji:
2009
Wydawca:
Polska Akademia Nauk. Polskie Naukowo-Techniczne Towarzystwo Eksploatacyjne PAN
Tematy:
uszkodzenie
predykcja
sygnały drganiowe
sieć neuronowa typu RBF
damage
prediction
vibration signals
RBF neural network
Opis:
Przekładnia mostu pędnego stanowi kluczową część samochodowego układu przeniesienia napędu, a trafne przewidywanie uszkodzeń jest istotne dla bezpiecznego użytkowania samochodu. Jednakże precyzja przewidywania uszkodzenia przekładni jest obecnie niska ze względu na zmienne prędkości obrotowe i zmieniające się obciążenia występujące podczas używania pojazdu. W celu zredukowania zmienności drgań i zwiększenia trafności przewidywania trwałości resztkowej przekładni, w artykule zaproponowano nową metodę predykcyjną, która łączy sieć neuronową o radialnych funkcjach bazowych (RBF) i rekurencyjne przetwarzanie wstępne. Metoda rekurencyjnego przetwarzania wstępnego zmniejsza wpływ zmienności chwilowego obciążenia i prędkości na charakterystyczne parametry uzyskane z sygnałów drganiowych. Sieć neuronowa typu RBF modeluje nieliniowe charakterystyki przenoszenia napędu przez przekładnię mostu pędnego. Sieć taka charakteryzuje się zachowaniem samoadaptacyjnym i szybką zbieżnością. Wyniki badań symulacyjnych i eksperymentalnych pokazują, że ta nowa metoda może pozwolić na udoskonalenie tradycyjnych metod predykcyjnych oraz osiąganie wysokiej precyzji w przewidywaniu uszkodzeń przekładni mostu pędnego.
The rear axle gear is a key part of the automobile transmission system and accurate damage prediction is important for car safety. However, the precision of gear damage prediction is currently low because of the varying rotating speeds and the changing loads when a truck is in use. In order to reduce the fluctuation of vibrations and enhance the predicting accuracy of gear residual life, a new predictive method, which combines the Radial Basis Function (RBF) neural network with recursive preprocessing is proposed in this paper. The recursive preprocessing method reduces the effects of instantaneous load and speed fluctuations on the characteristic parameters extracted from vibration signals. The RBF neural network models the non-linear characteristics of the rear axle gear transmission. The RBF neural network is characterized by its self-adaptive behavior and its rapid convergence. The simulated and experimental results have shown that this new method can enhance traditional prediction methods and obtain high precision for the damage prediction of rear axle gears.
Źródło:
Eksploatacja i Niezawodność; 2009, 4; 57-64
1507-2711
Pojawia się w:
Eksploatacja i Niezawodność
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Some improvements in the reinforcement learning of a mobile robot
Uczenie ze wzmocnieniem robotów mobilnych - propozycje usprawnień
Autorzy:
Pluciński, M.
Powiązania:
https://bibliotekanauki.pl/articles/153411.pdf
Data publikacji:
2010
Wydawca:
Stowarzyszenie Inżynierów i Techników Mechaników Polskich
Tematy:
uczenie ze wzmocnieniem
sieci neuronowe RBF
roboty mobilne
reinforcement learning
probabilistic RBF neural network
mobile robot
Opis:
The paper presents application of the reinforcement learning to autonomous mobile robot moving learning in an unknown, stationary environment. The robot movement policy was represented by a probabilistic RBF neural network. As the learning process was very slow or even impossible for complicated environments, there are presented some improvements, which were found out to be very effective in most cases.
W artykule zaprezentowane jest zastosowanie uczenia ze wzmocnieniem w poszukiwaniu strategii ruchu autonomicznego robota mobilnego w nieznanym, stacjonarnym środowisku. Zadaniem robota jest dotarcie do zadanego i znanego mu punktu docelowego jak najkrótszą drogą i bez kolizji z przeszkodami. Stan robota określa jego położenie w stałym (związanym ze środowiskiem) układzie współrzędnych, natomiast akcja wyznaczana jest jako zadany kierunek ruchu. Strategia robota zdefiniowana jest pośrednio za pomocą funkcji wartości, którą reprezentuje sztuczna sieć neuronowa typu RBF. Sieci tego typu są łatwe w uczeniu, a dodatkowo ich parametry umożliwiają wygodną interpretację realizowanego odwzorowania. Ponieważ w ogólnym przypadku uczenie robota jest bardzo trudne, a w skomplikowanych środowiskach praktycznie niemożliwe, stąd w artykule zaprezentowanych jest kilka propozycji jego usprawnienia. Opisane są eksperymenty: z wykorzystaniem ujemnych wzmocnień generowanych przez przeszkody, z zastosowaniem heurystycznych sposobów podpowiadania robotowi właściwych zachowań w "trudnych" sytuacjach oraz z wykorzystaniem uczenia stopniowego. Badania wykazały, że najlepsze efekty uczenia dało połączenie dwóch ostatnich technik.
Źródło:
Pomiary Automatyka Kontrola; 2010, R. 56, nr 12, 12; 1470-1473
0032-4140
Pojawia się w:
Pomiary Automatyka Kontrola
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Neuro-adaptive cooperative control for high-order nonlinear multi-agent systems with uncertainties
Autorzy:
Peng, Cheng
Zhang, Anguo
Li, Junyu
Powiązania:
https://bibliotekanauki.pl/articles/2055174.pdf
Data publikacji:
2021
Wydawca:
Uniwersytet Zielonogórski. Oficyna Wydawnicza
Tematy:
multiagent system
radial basis function
RBF neural network
sliding mode control
cooperative control
system wieloagentowy
radialna funkcja bazowa
sieć neuronowa RBF
sterowanie ślizgowe
Opis:
The consensus problem for a class of high-order nonlinear multi-agent systems (MASs) with external disturbance and system uncertainty is studied. We design an online-update radial basis function (RBF) neural network based distributed adaptive control protocol, where the sliding model control method is also applied to eliminate the influence of the external disturbance and system uncertainty. System consensus is verified by using the Lyapunov stability theorem, and sufficient conditions for cooperative uniform ultimately boundedness (CUUB) are also derived. Two simulation examples demonstrate the effectiveness of the proposed method for both homogeneous and heterogeneous MASs.
Źródło:
International Journal of Applied Mathematics and Computer Science; 2021, 31, 4; 635--645
1641-876X
2083-8492
Pojawia się w:
International Journal of Applied Mathematics and Computer Science
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Applying LCS to affective image classification in spatial - frequency domain
Autorzy:
Lee, P. -M.
Hsiao, T.-C.
Powiązania:
https://bibliotekanauki.pl/articles/91808.pdf
Data publikacji:
2014
Wydawca:
Społeczna Akademia Nauk w Łodzi. Polskie Towarzystwo Sieci Neuronowych
Tematy:
image classification
pattern recognition
Hilbert-Huang transform
HHT
empirical mode decomposition
EMD
Hilbert transform
HT
Extended Classifier Systems
XCSs
Area Under Curve
AUC
Radial-Basis Function Network
RBF Network
LCS
Opis:
Recent studies have utilizes color, texture, and composition information of images to achieve affective image classification. However, the features related to spatial-frequency domain that were proven to be useful for traditional pattern recognition have not been tested in this field yet. Furthermore, the experiments conducted by previous studies are not internationally-comparable due to the experimental paradigm adopted. In addition, contributed by recent advances in methodology, that are, Hilbert-Huang Transform (HHT) (i.e. Empirical Mode Decomposition (EMD) and Hilbert Transform (HT)), the resolution of frequency analysis has been improved. Hence, the goal of this research is to achieve the affective image-classification task by adopting a standard experimental paradigm introduces by psychologists in order to produce international-comparable and reproducible results; and also to explore the affective hidden patterns of images in the spatial-frequency domain. To accomplish these goals, multiple human-subject experiments were conducted in laboratory. Extended Classifier Systems (XCSs) was used for model building because the XCS has been applied to a wide range of classification tasks and proved to be competitive in pattern recognition. To exploit the information in the spatial-frequency domain, the traditional EMD has been extended to a two-dimensional version. To summarize, the model built by using the XCS achieves Area Under Curve (AUC) = 0.91 and accuracy rate over 86%. The result of the XCS was compared with other traditional machine-learning algorithms (e.g., Radial-Basis Function Network (RBF Network)) that are normally used for classification tasks. Contributed by proper selection of features for model building, user-independent findings were obtained. For example, it is found that the horizontal visual stimulations contribute more to the emotion elicitation than the vertical visual stimulation. The effect of hue, saturation, and brightness; is also presented.
Źródło:
Journal of Artificial Intelligence and Soft Computing Research; 2014, 4, 2; 99-123
2083-2567
2449-6499
Pojawia się w:
Journal of Artificial Intelligence and Soft Computing Research
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
New type of neural networks for rendering graph points
Autorzy:
Nedbalek, J.
Powiązania:
https://bibliotekanauki.pl/articles/2069633.pdf
Data publikacji:
2010
Wydawca:
Uniwersytet Morski w Gdyni. Polskie Towarzystwo Bezpieczeństwa i Niezawodności
Tematy:
description
gantt
graph
RBF 2
neural network
Opis:
The paper demonstrates new approach of rendering the graph point series called gantts. The gantts are placed in the two dimensional graph which contains the information about available production sources in the Real manufacturing process. The gantt is defined as one dimensional coloured dash which has unique position. To have the interaction with a user, gantts are accompanied with the description text giving detailed information about each gantt. All gantt descriptions must be displayed without overlapping with each other. To optimize this task, the modified version of the RBF neural network with biases is applied. With respect to the similarity to the RBF structure, the new type of neural network is named RBF 2. We also give the picture of positive and negative attributes of the solution based on the neural network architecture.
Źródło:
Journal of Polish Safety and Reliability Association; 2010, 1, 1; 181--186
2084-5316
Pojawia się w:
Journal of Polish Safety and Reliability Association
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Neural Network Model for Control of Operating Modes of Crushing and Grinding Complex
Autorzy:
Kalinchyk, Vasyl
Meita, Olexandr
Pobigaylo, Vitalii
Borychenko, Olena
Kalinchyk, Vitalii
Powiązania:
https://bibliotekanauki.pl/articles/2174915.pdf
Data publikacji:
2022
Wydawca:
Politechnika Koszalińska. Wydawnictwo Uczelniane
Tematy:
classification
modelling
neural network
radial basis function network
RBF
multilayer perceptron
MLP
Opis:
This article investigates the application of neural network models to create automated control systems for industrial processes. We reviewed and analysed works on dispatch control and evaluation of equipment operating modes and the use of artificial neural networks to solve problems of this type. It is shown that the main requirements for identification models are the accuracy of estimation and ease of algorithm implementation. It is shown that artificial neural networks meet the requirements for accuracy of classification problems, ease of execution and speed. We considered the structures of neural networks that can be used to recognise the modes of operation of technological equipment. Application of the model and structure of networks with radial basis functions and multilayer perceptrons for identifying the mode of operation of equipment under given conditions is substantiated. The input conditions for constructing neural network models of two types with a given three-layer structure are offered. The results of training neural models on the model of a multilayer perceptron and a network with radial basis functions are presented. The estimation and comparative analysis of models depending on model parameters are made. It is shown that networks with radial basis functions offer greater accuracy in solving identification problems. The structural scheme of the automated process control system with mode identification based on artificial neural networks is offered.
Źródło:
Rocznik Ochrona Środowiska; 2022, 24; 26--40
1506-218X
Pojawia się w:
Rocznik Ochrona Środowiska
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Comparative Application of Radial Basis Function and Multilayer Perceptron Neural Networks to Predict Traffic Noise Pollution in Tehran Roads
Autorzy:
Mansourkhaki, A.
Berangi, M.
Haghiri, M.
Powiązania:
https://bibliotekanauki.pl/articles/124655.pdf
Data publikacji:
2018
Wydawca:
Polskie Towarzystwo Inżynierii Ekologicznej
Tematy:
MLP
RBF
neural network
noise prediction
road traffic noise
Opis:
Noise pollution is a level of environmental noise which is considered as a disturbing and annoying phenomenon for human and wildlife. It is one of the environmental problems which has not been considered as harmful as the air and water pollution. Compared with other pollutants, the attempts to control noise pollution have largely been unsuccessful due to the inadequate knowledge of its effects on humans, as well as the lack of clear standards in previous years. However, with an increase of traveling vehicles, the adverse impact of increasing noise pollution on human health is progressively emerging. Hence, investigators all around the world are seeking to find new approaches for predicting, estimating and controlling this problem and various models have been proposed. Recently, developing learning algorithms such as neural network has led to novel solutions for this challenge. These algorithms provide intelligent performance based on the situations and input data, enabling to obtain the best result for predicting noise level. In this study, two types of neural networks – multilayer perceptron and radial basis function – were developed for predicting equivalent continuous sound level (LAeq) by measuring the traffic volume, average speed and percentage of heavy vehicles in some roads in west and northwest of Tehran. Then, their prediction results were compared based on the coefficient of determination (R2) and the Mean Squared Error (MSE). Although both networks are of high accuracy in prediction of noise level, multilayer perceptron neural network based on selected criteria had a better performance.
Źródło:
Journal of Ecological Engineering; 2018, 19, 1; 113-121
2299-8993
Pojawia się w:
Journal of Ecological Engineering
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Prediction of industrial pollution by radial basis function networks
Autorzy:
Djebbri, N.
Rouainia, M.
Powiązania:
https://bibliotekanauki.pl/articles/207579.pdf
Data publikacji:
2018
Wydawca:
Politechnika Wrocławska. Oficyna Wydawnicza Politechniki Wrocławskiej
Tematy:
forecasting
RBF
artificial neural network
pollution
prognozowanie
sztuczna sieć neuronowa
zanieczyszczenie
Opis:
Atmospheric pollution has been receiving a significant interest for several decades since industries cause more and more pollution. Thanks to the development of many prediction techniques, scientists and industries are focusing more on pollution prediction. The aim of this work is to predict the two pollutant concentrations (NOx and CO) in industrial sites by a modified radial basis function (RBF) based neural network. The modification considered the spread parameter h of the activation function in the RBF network. In order to get the best network, the variations of this parameter for three cases were considered. In the first case, only pollutants concentrations variables were used, while in the second one, only the meteorological variables were utilized. In the third case, pollutants' concentrations were connected with meteorological variables. Based on calculation errors, the best model that ensures the best monitoring of pollutants concentration could be identified.
Źródło:
Environment Protection Engineering; 2018, 44, 3; 153-164
0324-8828
Pojawia się w:
Environment Protection Engineering
Dostawca treści:
Biblioteka Nauki
Artykuł
    Wyświetlanie 1-12 z 12

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