Temat: matlab/simulink - Katalog OPAC zbiorów

Skocz do pozycji: 1.

Tytuł:: Modeling and simulation of grid connecting converters for photovoltaic applications in MATLAB/Simulink
Autorzy:: Zimoch, P.
Powiązania:: https://bibliotekanauki.pl/articles/114140.pdf
Data publikacji:: 2017
Wydawca:: Stowarzyszenie Inżynierów i Techników Mechaników Polskich
Tematy:: grid connected converter
solar panel
photovoltaics
MATLAB/Simulink
Opis:: This paper presents simulation models of a grid-connecting converter for photovoltaic applications using MATLAB/Simulink’s Simscape SimPowerSystems toolbox. Manufacturers of these converters often do not provide any information related to the topology and control algorithms, thus impeding the modeling. Simulation models of two possible topologies of SVM based current controlled three-phase converters are shown and compared. The simulation results are compared to a 9.6 kW rooftop PV plant built in Novi Sad, Serbia, by connecting a corresponding PV array model at the input of the converter models. Simulation results have shown, that the created models produce results similar to the physical system, and that both modelled topologies are possible and viable to implement.
Źródło:: Measurement Automation Monitoring; 2017, 63, 7; 252-255
2450-2855
Pojawia się w:: Measurement Automation Monitoring
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 2.

Tytuł:: Examination of computational procedures from the point of view of their applications in the simulation of torsional vibration in the motorcycle steering system, with freeplay and friction being taken into account
Badania procedur obliczeniowych pod kątem zastosowań w symulacji drgań skrętnych w układzie kierowniczym motocykla z uwzględnieniem luzu i tarcia
Autorzy:: Żardecki, D.
Dębowski, A.
Powiązania:: https://bibliotekanauki.pl/articles/263548.pdf
Data publikacji:: 2014
Wydawca:: Sieć Badawcza Łukasiewicz. Przemysłowy Instytut Motoryzacji
Tematy:: systems with freeplay and friction
simulation of vibrations
sensitivity analysis
computational procedures
MATLAB Simulink
układy z luzem i tarciem
symulacja drgań
badanie wrażliwości
procedury obliczeniowe
MATLAB/Simulink
Opis:: The torsional vibrations that occur in the motorcycle steering system pose a significant problem for motorcyclist's safety. These vibrations are particularly conspicuous in the motorcycles operated with high dynamic loads, where the impact of freeplay and friction emerges due to mechanical wear. The vibrations generated in the motorcycle steering system in the presence of freeplay and friction have peculiar nonlinear nature typical of stick-slip processes. Due to the threshold-like phenomena reflected in the nonlinearities related to freeplay and friction, it is difficult to simulate the behaviour of such systems and comprehensive preliminary research must be first carried out for this purpose. In this paper, simulation tests of the torsional vibrations that occur in a simplified equivalent model of the steering system (torsional pendulum) have been described. A mathematical model of the system has been given, inclusive of an original method of generating external inputs. Computer software developed in the Matlab-Simulink environment has been presented. The impact of computational procedures on simulation results, including impact of the method used to implement the slick-slip model in the simulation program, impact of the type of the algorithms used to integrate differential equations, and impact of the preset numerical parameters, has been analysed.
Drgania skrętne występujące w układzie kierowniczym stanowią istotny problem dla bezpieczeństwa użytkownika motocykla. Drgania te są szczególnie widoczne w motocyklach eksploatowanych przy dużych obciążeniach dynamicznych. Wówczas, na skutek zużycia mechanicznego, znacząco objawia się wpływ luzu i tarcia. Drgania generowane w układzie kierowniczym motocykla w obecności luzu i tarcia mają osobliwy nieliniowy charakter procesów stick-slip. Z uwagi na progowy charakter nieliniowości związanych z luzem i tarciem oraz zmienność struktury modelu, realizacja symulacji takich układów jest trudna i wymagająca rozległych badań wstępnych. W niniejszej pracy relacjonowane są testy symulacyjne drgań skrętnych występujących w uproszczonym zastępczym modelu układu kierowniczego (wahadło torsyjne). Podano matematyczny model układu, w tym także oryginalny sposób generowania wymuszeń zewnętrznych. Przedstawiono oprogramowanie w środowisku Matiab-Simulink. Badany jest także wpływ procedur obliczeniowych na wyniki symulacji, w tym: wpływ sposobu implementacji modelu stick-slip w programie symulacyjnym, wpływ rodzaju zastosowanych algorytmów całkowania równań różniczkowych, a także wpływ zadawanych parametrów numerycznych.
Źródło:: Archiwum Motoryzacji; 2014, 64, 2; 79-95, 179-195
1234-754X
2084-476X
Pojawia się w:: Archiwum Motoryzacji
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 3.

Tytuł:: Test bench and simulation research on hydrodynamic torque converter for different input signals
Autorzy:: Wozniak, M.
Siczek, K.
Pawelski, Z.
Powiązania:: https://bibliotekanauki.pl/articles/247933.pdf
Data publikacji:: 2016
Wydawca:: Instytut Techniczny Wojsk Lotniczych
Tematy:: torque converter
torque
Matlab/Simulink
linearization
nonlinear model
ARX
OE
Opis:: This paper presents the experimental research and simulating results of a ZM130 hydrodynamic torque converter under steady and unsteady working conditions with an external step signal and sinus on turbine’s shaft on a modified test bench. The mathematical model of torque converter was described by the one-dimensional flow theory with variable loss coefficients. The character of received equations from test bend showed by linearized transmittance functions with variable coefficients. For test bend object identification researches will be used an Identification Toolbox from a mathematical code in Matlab, which enables to create transfer functions as a linear model from measurements data as they got the highest correctness level with input signal (as they get the best correction level with input signal on the pump´s shaft). This mathematical model for dynamic loads will be verified by experimental tests. The aim of the carried out studies was determination the effect of sampling time decreasing on the quality of measured parameters. Results of present investigations were compared with those obtained earlier, but for the same input signals .It is possible to affirm that proposed theoretical model imitates the change of dynamic parameters, and the same the property of the torque converter. Researches led on the test bend with extortion input torque sinus signal on the turbine’s shaft confirmed correctness of this model.
Źródło:: Journal of KONES; 2016, 23, 4; 561-568
1231-4005
2354-0133
Pojawia się w:: Journal of KONES
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 4.

Tytuł:: Systemic Evolutionary Algorithm inspired by the methods of quantum computing to improve the accuracy of the model on the neuronal motion the end of the robot arm PR–02
Autorzy:: Wołynka, Ł.
Tchórzewski, J.
Powiązania:: https://bibliotekanauki.pl/articles/97323.pdf
Data publikacji:: 2016
Wydawca:: Politechnika Poznańska. Wydawnictwo Politechniki Poznańskiej
Tematy:: Evolution algorithms
Quantum computing
Modeling systems
Robot PR–02
Artificial Neural Networks
Environment MATLAB and Simulink
Opis:: The article contains selected results of research on the design Systemic Evolutionary Algorithm inspired by quantum informatics methods and description how to implement it in Matlab language in order to use for improve parameters neural model on example robot robot PR–02 arm motion. Initial population was based on weights matrix of artificial neural network. Randomly selected population of individual chromosomes in both the initial and in the following parent population have been converted to binary values, and these to quantum values by using created for this purpose quatization() function. Quantum gene value was determined on the basis of stonger pure state represented by different chromosomes, to which dequantization() function was used. Selection of individuals was conducted based on the model of neural robot PR–02 motion implemented in Matlab language using calculationsNeuralNetworks() function.
Źródło:: Computer Applications in Electrical Engineering; 2016, 14; 297-312
1508-4248
Pojawia się w:: Computer Applications in Electrical Engineering
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 5.

Tytuł:: Modelowanie małej elektrowni wiatrowej
Modeling of small wind power plant
Autorzy:: Włas, M.
Meller, K.
Powiązania:: https://bibliotekanauki.pl/articles/267617.pdf
Data publikacji:: 2010
Wydawca:: Politechnika Gdańska. Wydział Elektrotechniki i Automatyki
Tematy:: małe elektrownie wiatrowe
modelowanie
MATLAB/Simulink
small wind power plant
modeling
MATLAB Simulink
Opis:: W pracy przedstawiono model elektrowni wiatro-wej o mocy 8500W wyposażonej w generator z silnikiem synchro-nicznym z magnesami trwałymi. W oparciu o analizę dostępnej literatury naukowej [1, 2, 3, 4], norm technicznych [5], opracowano model elektrowni wiatrowej, który został zaimplementowany w środowisku Matlab Simulink. Model ten pozwala przeprowadzić analizę elektrowni wiatrowej, w której regulacja wytwarzanej energii odbywa się z wykorzystaniem elektronicznie sterowanego siłownika, regulującego położenie steru tylnego. Tym samym sprawia, że elektrownia wiatrowa odchodzi od wiatru w przypadku zbyt dużej prędkości wiatru. Do sterowania sterem tylnym elek-trowni wykorzystano regulator rozmyty. W artykule przedstawiono wyniki badań symulacyjnych układu regulacji elektrowni wiatrowej przy słabych i silnych podmuchach wiatru.
In the paper it is presented control system of small wind power plant based fuzzy-logic controller. This technique can improve the performance of generation system when strong wind appear. The maximum available output power obtain the same level during wind change because the controller change the tail angle. Simulation results are presented to demonstrate reliability of proposed controller. The model of wind and model of wind power plant was prepared in Matlab Simulink program.
Źródło:: Zeszyty Naukowe Wydziału Elektrotechniki i Automatyki Politechniki Gdańskiej; 2010, 28; 149-152
1425-5766
2353-1290
Pojawia się w:: Zeszyty Naukowe Wydziału Elektrotechniki i Automatyki Politechniki Gdańskiej
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 6.

Tytuł:: Using the EMTP/ATP program for calculation of electric and magnetic field distribution under overhead line
Autorzy:: Wiśniewski, J.
Anderson, E.
Karolak, J.
Powiązania:: https://bibliotekanauki.pl/articles/97319.pdf
Data publikacji:: 2012
Wydawca:: Politechnika Poznańska. Wydawnictwo Politechniki Poznańskiej
Tematy:: EMTP-ATP program
PSCad
MATLAB Simulink
magnetic field
Opis:: This paper presents the method of calculation of the electric and magnetic fields under overhead transmission line with any number of circuits, phase positions, voltages and current loads. Calculations of this type usually require specialized and costly programs. The program EMTP/ATP is a royalty free tool to calculate the electric transient and steady states in complex power systems. You can use this program and through appropriate modeling the multi-phase wire system representing the line and measurement device calculate the strength of the electric and magnetic fields. The results of calculations are characterized by a very small error compared to the results obtained by using the specialized commercial program. This method can be used with other popular engineering tools like Matlab/Simulink or PSCad.
Źródło:: Computer Applications in Electrical Engineering; 2012, 10; 98-106
1508-4248
Pojawia się w:: Computer Applications in Electrical Engineering
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 7.

Tytuł:: Fuzzy logic control system of the feeder for the stone crushing line
Autorzy:: Wiercioch, Krzysztof
Powiązania:: https://bibliotekanauki.pl/articles/41204272.pdf
Data publikacji:: 2011
Wydawca:: Uniwersytet Kazimierza Wielkiego w Bydgoszczy
Tematy:: fuzzy logic
fuzzy control
MATLAB Simulink
Opis:: This paper presents the control system in the stone crushing line and its model devel0ped using Matlab-Simulink software. The simulation was performed using a fuzzy controller, which includes fuzzification block., an inference block and a defuzzification block.
Źródło:: Studia i Materiały Informatyki Stosowanej; 2011, 5; 31-33
1689-6300
Pojawia się w:: Studia i Materiały Informatyki Stosowanej
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 8.

Tytuł:: Machine vibrations with more degrees of freedom
Autorzy:: Vondřich, J.
Thöndel, E.
Powiązania:: https://bibliotekanauki.pl/articles/1429159.pdf
Data publikacji:: 2008
Wydawca:: Wrocławska Rada Federacji Stowarzyszeń Naukowo-Technicznych
Tematy:: Matlab
Simulink
vibration
machine
Opis:: Rigid mounting of machines to a solid base is one of the requirements for high performance and quality of production. Machine vibrations occur as a result of unbalanced revolving masses, loading forces and moments, starting and coasting of driving motors and other effects. We try to eliminate these undesirable vibrations by suitable mounting of the machine and its parts as much as possible. Suitable mounting of the machine is possible using components such as torsion springs, pneumatic springs, rubber pads or other components. The article describes numerical calculation of optimal displacements the machine for the given his parameters.
Źródło:: Journal of Machine Engineering; 2008, 8, 4; 80-87
1895-7595
2391-8071
Pojawia się w:: Journal of Machine Engineering
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 9.

Tytuł:: Optimization of Mounting of a Machine and its Parts
Autorzy:: Vondrich, J.
Havlicek, R.
Powiązania:: https://bibliotekanauki.pl/articles/971107.pdf
Data publikacji:: 2008
Wydawca:: Wrocławska Rada Federacji Stowarzyszeń Naukowo-Technicznych
Tematy:: Matlab
Simulink
air spring
machine
Opis:: Frequency dependence values of input or mutual mechanical impedances of vibrating machines and their parts can be measured using an impedance hammer and a two-channel frequence analyzer. The knowledge of the frequency response of mechanical impedance provides for the determination of properties of vibration energy transmission in the structure of the machine based on which it is possible to adjust the mounting arrangement of the machine and its parts in order to attenuate vibrations. The obtained data concerning the dynamicbehaviour of the machine then serve as a basic for a proper design and implementation of elastic mounting of the machine and its parts on damping elements which attenuate unwanted vibrations to the minimum. The design consists in assembling a model of the machine assuming that elastic mounting has been provided for, describing the model using equations of montion and elaborating their numerical solution. An efficient damping arrangement is achieved by mounting the vibrating parts of the machine using air springs. The air pressure in the air springs can be regulated according to deflections of the individual machine parts measured by accelerometers using a control element. The numeric solution provides for determination of values of stiffness coefficients k and damping coefficient c which would be optimal for the specified machine parameters in order to minimise the defections of the individual machine parts.
Źródło:: Journal of Machine Engineering; 2008, 8, 1; 123-129
1895-7595
2391-8071
Pojawia się w:: Journal of Machine Engineering
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 10.

Tytuł:: Adaptive control of frictional contact models for nonholonomic wheeled mobile robot
Autorzy:: Vivekananthan, R.
Karunamoorthy, L.
Powiązania:: https://bibliotekanauki.pl/articles/384636.pdf
Data publikacji:: 2011
Wydawca:: Sieć Badawcza Łukasiewicz - Przemysłowy Instytut Automatyki i Pomiarów
Tematy:: wheeled robot
dynamic model
wheel terrain interaction
Ansys analysis
MATLAB Simulink
Opis:: Mobility of the robot depends on the vehicle dimensions, locomotion principles and wheel characteristics. The function of the wheel is to carry the load and to produce the traction force. The main factors of wheel terrain interaction are bearing capacity of ground, traction performance of the wheel and geometry of terrain profile. In this paper the system and control concepts of the wheeled robot is discussed in more detail, within the framework provided by the wheel terrain contact model. The dynamic model of the wheeled robot is presented by considering contact forces of the wheel due to their relative motion of the wheel and contact plane. Finally, a dynamic relation is introduced and results are presented in terms of forces, torques and displacements related to wheel terrain interaction. To estimate the forces in the system arising from the interaction between a deformable wheel and rigid terrain using the software package Ansys 10.0. Simulations were performed using Matlab- Simulink program and the results are shown that the proposed controller can overcome the influences the effect of contact forces in order to achieve the desired trajectory.
Źródło:: Journal of Automation Mobile Robotics and Intelligent Systems; 2011, 5, 4; 30-34
1897-8649
2080-2145
Pojawia się w:: Journal of Automation Mobile Robotics and Intelligent Systems
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 11.

Tytuł:: Modelling of a thermoelectric self-cooling system based on thermal resistance networks for linear direct drives in machine tools
Autorzy:: Uhlmann, Eckart
Salein, Sebastian
Polte, Mitchel
Triebel, Florian
Powiązania:: https://bibliotekanauki.pl/articles/99421.pdf
Data publikacji:: 2020
Wydawca:: Wrocławska Rada Federacji Stowarzyszeń Naukowo-Technicznych
Tematy:: legal restrictions
productivity
energy efficiency
thermoelectric generator
cooling
modelling
MATLAB/Simulink
Opis:: The use of direct drives in linear and rotary axes as well as increased power density of main drives offer the potential to raise feet rate, acceleration and thus allow higher productivity of machine tools. The induced heat flow rates of these drives could lead to thermo-elastic deformations of precision related machine tool components. In order to reduce thermally caused displacements of the tool-center-point and to prevent a negative impact on the achievable accuracy, the induced heat flow rates of main drives must be dissipated by effective cooling systems. These systems account for a major share of the machine tool’s total energy consumption.With the intention to overcome the area of conflict regarding productivity and energy efficiency, a so called thermoelectric self-cooling system has been developed. To convert a proportion of thermal losses into electrical energy, thermoelectric generators are placed in the heat flow between the primary part of a linear direct drive and the cooling system. The harvested energy is directly supplied to a pump of the water cooling circuit, which operates a decentralised cooling system with reasonable coolant flow rates. For predicting the thermoelectric system behaviour and to enable a model-based design of thermoelectric self-cooling systems, a thermal resistance network as a system simulation in MATLAB/Simulink is presented. The model is applied to a feed unit with a linear direct drive and allows the calculation of harvested energy as well as the simulation of steady and transient states of the cooling system. The comparison of simulative and experimental determined data indicates a predominantly high model prediction accuracy with short simulation times. At an early stage of development the model turns out to be a powerful tool for design and analysis of water flow thermoelectric self-cooling systems.
Źródło:: Journal of Machine Engineering; 2020, 20, 1; 43-57
1895-7595
2391-8071
Pojawia się w:: Journal of Machine Engineering
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 12.

Tytuł:: Analysis of a web application supporting gym management in terms of control and systems theory
Autorzy:: Tchórzewski, Jerzy
Nabiałek, Wojciech
Księżopolski, Artur
Powiązania:: https://bibliotekanauki.pl/articles/27323576.pdf
Data publikacji:: 2023
Wydawca:: Uniwersytet Przyrodniczo-Humanistyczny w Siedlcach
Tematy:: gym management
identity theory
MATLAB
Simulink environment
modeling
simulations
web systems
Opis:: An analysis of the web application supporting the management of the gym was carried out, which was designed in terms of the theory of control and systems. The obtained results of measurements of input and output quantities of selected subsystems were used to carry out the identification, as a result of which models of web application subsystems were obtained. On the basis of the obtained subsystem models, appropriate models were then designed in Simulink for the purposes of simulation and comparative studies of the behavior of subsystem models in relation to real systems that are web applications, including an appropriate analysis of the web application system model was carried out under the name of the gym on its selected subsystems, including in particular the subsystem called Generating a diet. In addition, testing and simulation studies were carried out to check the correct functioning of the web application management system model and the introduction of appropriate changes to the model was proposed, and the obtained research results were discussed, indicating the high accuracy of the obtained web application models.
Źródło:: Studia Informatica : systems and information technology; 2023, 1(28); 47--68
1731-2264
Pojawia się w:: Studia Informatica : systems and information technology
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 13.

Tytuł:: Analysis of data quoted on the Day-Ahead Market of TGE S.A. using Statistics and Machine Learning Toolbox
Autorzy:: Tchórzewski, Jerzy
Longota, Bartłomiej
Powiązania:: https://bibliotekanauki.pl/articles/2201615.pdf
Data publikacji:: 2022
Wydawca:: Uniwersytet Przyrodniczo-Humanistyczny w Siedlcach
Tematy:: artificial neural network
cluster analysis
Day-Ahead Market
k-means method
Matlab and Simulink environment
Statistics and Machine Learning Toolbox
Ward’s method
Opis:: The publication contains the results of research in the field of cluster analysis carried out using data quoted on the Day-Ahead Market of TGE S.A. Two methods were used in the analysis, one hierarchical known as the Ward’s method, and the other non-hierarchical - the k-means method. Many interesting research results have been obtained, which are illustrated, among others, in in the form of dendrograms, silhouette graphs and graphs in the form of clusters. Data on the volume and the volumeweighted average price of electricity were examined for various types of quotations: fixing 1, fixing 2 and continuous quotations. The research was carried out in the MATLAB and Simulink environments using a library called Machine and Statistics Learning Toolbox. Selected test results were interpreted.
Źródło:: Studia Informatica : systems and information technology; 2022, 2(27); 49--74
1731-2264
Pojawia się w:: Studia Informatica : systems and information technology
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 14.

Tytuł:: Cluster analysis on the example of work data of the National Power System. Part 1, Comparative study of methods and conditions
Autorzy:: Tchórzewski, Jerzy
Kania, Tomasz
Powiązania:: https://bibliotekanauki.pl/articles/1819255.pdf
Data publikacji:: 2019
Wydawca:: Uniwersytet Przyrodniczo-Humanistyczny w Siedlcach
Tematy:: cluster analysis
National Electric Power System
MATLAB and simulink environment
ward's algorithm
self-organizing maps
Opis:: The paper presents the results of the research on the comparative study of the methods of cluster analysis and conditions, which was carried out from the point of view of their use, on the example of data concerning the operation of the National Power System. Two algorithms were used for the clustering analysis, i.e. the Ward algorithm and the algorithm of self-organizing two-dimensional maps. Cluster analysis was preceded by a review of hierarchical and non-hierarchical methods of data analysis and a description of the prepared experiment. The obtained results were interpreted. The work consists of two parts published under the same main title with different subtitles. This part 1 presents the results of the conducted review of selected methods of cluster analysis and the research conditions resulting from the adopted data on the operation of the National Power System. Part 2 presents the cluster analysis process and selected research results and their discussion.
Źródło:: Studia Informatica : systems and information technology; 2019, 1-2(23); 25--41
1731-2264
Pojawia się w:: Studia Informatica : systems and information technology
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 15.

Tytuł:: Cluster analysis on the example of work data of the National Power System. Part 2, Research and selected results
Autorzy:: Tchórzewski, Jerzy
Kania, Tomasz
Powiązania:: https://bibliotekanauki.pl/articles/2052268.pdf
Data publikacji:: 2020
Wydawca:: Uniwersytet Przyrodniczo-Humanistyczny w Siedlcach
Tematy:: cluster analysis
National Power System
MATLAB
Simulink
Ward's algorithm
self-organizing two-dimensional maps
Opis:: The work is a continuation of the article under the same main title and subtitle Part 1. Comparative study of methods and conditions. This article concerns the cluster analysis, which was carried out on the example of data concerning the operation of the National Power System, namely the total generations of nCDGUs and CDGUs listed by PSE Operator. Two algorithms were used to obtain the results of the cluster analysis, i.e. the Ward algorithm and the algorithm of self-organizing twodimensional topographic maps. The obtained results were interpreted and their discussion and interpretation were conducted.
Źródło:: Studia Informatica : systems and information technology; 2020, 1-2(24); 5-23
1731-2264
Pojawia się w:: Studia Informatica : systems and information technology
Dostawca treści:: Biblioteka Nauki

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