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Wyszukujesz frazę "Equivalent Circuit Model" wg kryterium: Temat


Wyświetlanie 1-6 z 6
Tytuł:
Experimental validation of equivalent circuit modelling of the piezo-stripe harvester attached to the sfsf rectangular plate
Autorzy:
Koszewnik, Andrzej
Powiązania:
https://bibliotekanauki.pl/articles/386747.pdf
Data publikacji:
2020
Wydawca:
Politechnika Białostocka. Oficyna Wydawnicza Politechniki Białostockiej
Tematy:
aluminium plate
piezo - harvester
energy harvesting system
modal analysis
Equivalent Circuit Model
ECM
Opis:
Plate-like structures with attached piezo-patch elements are widely used in marine, aerospace and civil infrastructure applications to power small devices with low power demand or used for monitoring of vibration structures. In order to assess the feasibility of an energy harvesting system to generate power output from a harvester, an accurate electromechanical model of the piezo-patch harvester attached to a 2D structure in modal coordinates is required. Taking into account this fact, this study is focused on the analysis of the piezoharvester orientations on the SFSF (Simply Supported-Free-Simply Supported-Free) plate undergoing forced dynamic excitation. The results obtained from the numerical analysis of a smart structure led to determining quasi-optimal piezo-harvester location on the structure, and next, to determining a multi-mode representation of the equivalent circuit model. The experimental set-up carried out on the lab stand properly verified the parameters of the ECM model. Finally, the proposed approach can be used for the structural health monitoring of vibration of some 2D mechanical structures like the front wall of a dishwasher.
Źródło:
Acta Mechanica et Automatica; 2020, 14, 1; 8-15
1898-4088
2300-5319
Pojawia się w:
Acta Mechanica et Automatica
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
An estimation of lithium-ion battery state of health - ageing-included modelling and experimental studies
Estymacja stanu baterii litowo-jonowych - modelowanie starzenia i badania eksperymentalne
Autorzy:
Mroz, P.
Gorny, P.
Ekiert, M.
Uhl, T.
Powiązania:
https://bibliotekanauki.pl/articles/327972.pdf
Data publikacji:
2016
Wydawca:
Polska Akademia Nauk. Polskie Towarzystwo Diagnostyki Technicznej PAN
Tematy:
Li-Ion battery
equivalent circuit model
state of health
ageing model
bateria Li-Ion
model ECM
monitorowanie stanu baterii
starzenie
Opis:
In this paper we present a study on Li-Ion Battery (LIB) modelling, including battery ageing profile, as a ground for development of state of health (SoH) prediction and monitoring system. An influence of LIB ageing was included by the mean of ageing module, based on voltage, resistance and capacity characteristics, resulting from preliminary experimental measurements. Our model, based on equivalent circuit model (ECM) and parameter estimation procedure, was implemented in MATLAB software and then validated. The simulation results are used for battery SoH estimation, which may be use in a future to optimize the conditions of LIB cycling and therefore extend the battery lifetime.
Niniejszy artykuł przedstawia badania nad stworzeniem modelu baterii litowo-jonowej, uwzględniającego procesy starzenia baterii, jako podstawę do budowy systemu monitorowania stanu baterii. Wpływ procesów starzenia został uwzględniony za pomocą specjalnego modułu, zdefiniowanego przy pomocy parametrów (tj. charakterystyki napięciowe, impedancyjne, pojemnościowe) uzyskanych na drodze pomiarów eksperymentalnych. Opracowany model, oparty na równoważnym dwugałęziowym modelu elektrycznym RC, został zaimplementowany w środowisku MATLAB, a następnie poddany walidacji. Wyniki przeprowadzonych symulacji wykorzystano do opracowania algorytmu estymacji stanu baterii, który w przyszłości może posłużyć do optymalizacji warunków pracy ogniw litowo-jonowych.
Źródło:
Diagnostyka; 2016, 17, 2; 25-34
1641-6414
2449-5220
Pojawia się w:
Diagnostyka
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Comparative Modelling Studies of 400 MHz ST-X Quartz SAW Delay Lines for Potential Gas Sensing Applications
Autorzy:
Thirumal, V.
Raju, B.
Gandhi, P.
Pandya, H. M.
Powiązania:
https://bibliotekanauki.pl/articles/177740.pdf
Data publikacji:
2018
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
surface acoustic wave
SAW delay line
impulse response model
equivalent circuit model
coupling-of-modes
COM model
SAW sensors
Opis:
Surface Acoustic Wave (SAW) devices like delay lines, filters, resonators etc., are nowadays extensively used as principal solid state components in many electronic applications and chemical vapour sensors. To bring out the best from these SAW devices, computational design and modelling are resorted too. The present paper proposes the modelling of 400 MHz ST-X Quartz based SAW delay line, by three models namely, Impulse Response Model (IRM), Crossed-field Equivalent Circuit Model (ECM) and Coupling-of-Modes (COM) model. MATLAB® is employed as a computational tool to model the experimental output of the SAW device. A comparative discussion of the modelled device results is also provided.
Źródło:
Archives of Acoustics; 2018, 43, 2; 153-161
0137-5075
Pojawia się w:
Archives of Acoustics
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Modelling of non-linear losses in an integrated contactless power supply for magnetically levitated elevator systems using discrete circuit elements
Autorzy:
Putri, A. K.
Appunn, R.
Hameyer, K.
Powiązania:
https://bibliotekanauki.pl/articles/141742.pdf
Data publikacji:
2015
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
contactless energy transmission
electromagnetic guiding system
equivalent circuit model
ferromagnetic material at high frequency
magnetically levitated elevator
modelling of non-linear losses
Opis:
A contactless energy transmission system is essential to supply onboard systems of electromagnetically levitated vehicles without physical contact to the guide rail. One of the possibilities to realise a contactless power supply (CPS) is by integrating the primary actuator into the guide rail of an electromagnetic guiding system (MGS). The secondary actuator is mounted on the elevator car. During the energy transmission, load dependent non-linear losses occur in the guide rail. The additional losses, which are caused by the leakage flux penetrating into the guide rail, cannot be modelled using the classical approach of iron losses in the equivalent circuit of a transformer, which is a constant parallel resistance to the mutual inductance. This paper introduces an approach for modelling the load dependent non-linear losses occurring in the guide rail using additional variable discrete circuit elements.
Źródło:
Archives of Electrical Engineering; 2015, 64, 2; 177-187
1427-4221
2300-2506
Pojawia się w:
Archives of Electrical Engineering
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Modeling and simulations of MEMS gyroscope with MATLAB/SIMULINK package
Autorzy:
Nazdrowicz, J.
Powiązania:
https://bibliotekanauki.pl/articles/397914.pdf
Data publikacji:
2017
Wydawca:
Politechnika Łódzka. Wydział Mikroelektroniki i Informatyki
Tematy:
MEMS
gyroscope
angular velocity sensor
microelectromechanical systems
model simulation
microaccelerometer
MATLAB
SIMULINK
MEMS modeling
equivalent circuit model
żyroskop
czujnik prędkości kątowej
mikroukład elektromechaniczny
model symulacyjny
akcelerometr
modelowanie MEMS
model obwodu zastępczego
Opis:
This paper presents developed mathematical model of MEMS gyroscope created in Matlab/SIMULINK environment. The model can be very useful for calculating MEMS gyroscope geometrical parameters. These parameters play very significant role, because they have huge and direct impact on device response, performance and further possibilities of application. Results of simulations are presented in this article separately for drive and sense direction. In addition there are also results in frequency domain presented. With all these results we obtain quick overview of behavior this kind of MEMS device and response characteristics.
Źródło:
International Journal of Microelectronics and Computer Science; 2017, 8, 1; 21-28
2080-8755
2353-9607
Pojawia się w:
International Journal of Microelectronics and Computer Science
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
A Study on the Low Frequency Transients in Power Transformers and Some Protection-Related Issues
Autorzy:
Saied, M. M.
Powiązania:
https://bibliotekanauki.pl/articles/1203944.pdf
Data publikacji:
2014
Wydawca:
Akademia Górniczo-Hutnicza im. Stanisława Staszica w Krakowie
Tematy:
transformer cores
inrush current
protection
transients
modeling
equivalent circuit
low frequency
nonlinear model
simulation
Opis:
This paper presents typical results for the non-linear low frequency transients following the energization of power transformers. The three operating conditions of no-load, full-load and internal faults are considered. A direct analytical procedure is applied for solving the corresponding set of differential equations describing the transformers equivalent circuit. The core representation is based on the use of curve fitting applied to their magnetization curves. The results include plots versus time for the supply current, the core flux, the magnetizing current as well as the internal induced voltage. Moreover, graphs for the hysteresis loops relating the instantaneous values of both the excitation current and the core flux are given. An approach is also presented for the numerical determination of the amplitudes of the different harmonics existing in any of these signals utilizing the corresponding equidistant samples. As examples, the DC offset as well as harmonics up to the fourth order are considered. It is shown that several useful features can be extracted from the results in both the time and harmonic domains that can assist in differentiating between overcurrents resulting from short-circuits or inrush phenomena.
Źródło:
Electrical Power Quality and Utilisation. Journal; 2014, 17, 2; 9-16
1896-4672
Pojawia się w:
Electrical Power Quality and Utilisation. Journal
Dostawca treści:
Biblioteka Nauki
Artykuł
    Wyświetlanie 1-6 z 6

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