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    Wyświetlanie 1-12 z 12
    Tytuł:
    Basic solutions for a program system for dynamic systems simulation
    Autorzy:
    Timofeev, A. O.
    Powiązania:
    https://bibliotekanauki.pl/articles/92971.pdf
    Data publikacji:
    2006
    Wydawca:
    Uniwersytet Przyrodniczo-Humanistyczny w Siedlcach
    Tematy:
    dynamic system simulation
    creating interactive applications
    Amethyst program system
    calculating the component state
    decentralized processing the signal delays
    filtering
    analog objects simulating
    Opis:
    The article presents basic solutions of the Amethyst program system. The system generates interactive applications for simulating complex dynamic systems. The method of presenting the information about the state of the simulated objects and method of calculating the component state are proposed. Method of decentralized processing the signal delays and filtering is discussed. Method of analog objects simulating is proposed. The article presents examples of projects produced for C++ Builder, Visual C++ and Visual Basic 2005 environment projects. The executable times of simulation are compared for the above mentioned environment applications.
    Źródło:
    Studia Informatica : systems and information technology; 2006, 1(7); 255-263
    1731-2264
    Pojawia się w:
    Studia Informatica : systems and information technology
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    IP based CCTV in drilling
    Inspekcje kamerami IP CCTV w wiertnictwie
    Autorzy:
    Artymiuk, J.
    Aashamar, K.
    Powiązania:
    https://bibliotekanauki.pl/articles/300015.pdf
    Data publikacji:
    2008
    Wydawca:
    Akademia Górniczo-Hutnicza im. Stanisława Staszica w Krakowie. Wydawnictwo AGH
    Tematy:
    system zapisu analogowego
    wiertnicze sieci CCTV
    recording system with analog
    drilling CCTV networks
    Opis:
    The introduction of IP CCTV cameras has made it technically possible to have remote surveillance and control of drilling equipment. The live video transmission on Internet (or UMTS/GSM) enables integrated drilling operations from a drilling control room situated at the drilling company headquarter. Using Internet (or even UMTS/ GSM) this integrated operation drilling control room can give support to a number of drilling operations at different locations. As an example, the presentation will give a brief description of an integrated operation drilling control room giving support to a number of drilling rigs in the North Sea. The presentation will focus on the IP CCTV part, but will also cover the real time data and control transfer of data from the drilling rig to the integrated operation control room.
    Wprowadzenie analogowych kamer o wysokiej rozdzielczości umożliwiło prowadzenie obserwacji sprzętu wiertniczego. Internetowe transmisje wideo "na żywo" (lub UMTS/GSM) umożliwiają sterowanie zintegrowanych prac wiertniczych z punktu sterowania. Za pomocą internetu (lub UMTS/GSM) w punkcie sterowania realizowane jest wspomaganie działań wiertniczych w różnych miejscach. W artykule przedstawiono przykładowy ogólny opis punktu sterowania zintegrowanymi pracami wiertniczymi, wspomagającego pracę wielu wiertni na Morzu Północnym. W artykule skupiono uwagę na analogowych kamerach o wysokiej rozdzielczości IP CCTV, jak również danych czasu rzeczywistego oraz sterowaniem przekazem danych z wiertni do punktu sterowania.
    Źródło:
    Wiertnictwo, Nafta, Gaz; 2008, 25, 2; 157-165
    1507-0042
    Pojawia się w:
    Wiertnictwo, Nafta, Gaz
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    High-speed power system stability simulation using analog computation
    Autorzy:
    Nagel, I.
    Fabre, L.
    Cherkaoui, R.
    Kayal, M.
    Powiązania:
    https://bibliotekanauki.pl/articles/398151.pdf
    Data publikacji:
    2010
    Wydawca:
    Politechnika Łódzka. Wydział Mikroelektroniki i Informatyki
    Tematy:
    mikroelektroniczna emulacja
    symulacja wysokiej prędkości
    przemijająca stabilność systemu elektroenergetycznego
    obliczenia analogowe
    microelectronic emulation
    high-speed simulation
    power system transient stability
    analog computation
    ASIC
    Opis:
    This paper presents a microelectronic emulation approach for high-speed power system computation. First, the problems of existing power system simulators are detailed. This shows that microelectronic emulation is a possible solution for solving the speed problems of existing simulators. Second, this paper presents one specific emulation approach, the so-called AC emulation approach. The ultimate objective of the AC emulation approach is the realization of a power system emulator which reproduces simultaneously a large number of phenomena of different time constants or frequencies with a much higher speed than real time. Frequency dependence of the elements is preserved and the signals propagating in the emulated network are the shrunk or downscaled current and voltage waves of the real power network. The models of the power network components are detailed. Special attention is paid to the generator model which was shown to introduce a systematic error. This systematic error is quantified, analyzed and optimized. Moreover behavioral simulation results confirm the feasibility of this approach which in turn lays the foundation for such an emulator.
    Źródło:
    International Journal of Microelectronics and Computer Science; 2010, 1, 2; 180-187
    2080-8755
    2353-9607
    Pojawia się w:
    International Journal of Microelectronics and Computer Science
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Calibration of a mixed-signal power network transient stability analysis emulator
    Autorzy:
    Lanz, G
    Fabre, L.
    Lilis, G
    Kyriakidis, T
    Sallin, D
    Cherkaoui, R.
    Kayal, M.
    Powiązania:
    https://bibliotekanauki.pl/articles/398094.pdf
    Data publikacji:
    2013
    Wydawca:
    Politechnika Łódzka. Wydział Mikroelektroniki i Informatyki
    Tematy:
    analog computer
    calibration
    field programmable gate array (FPGA)
    FPGA
    mixed signal
    power system dynamics
    komputer analogowy
    kalibracja
    field-programmable gate array
    sygnał mieszany
    dynamika systemu elektroenergetycznego
    Opis:
    The emerging field of power system emulation for real time smart grid management is very demanding in terms of speed and accuracy. This paper provides detailed information about the electronics calibration process of a high-speed power network emulator dedicated to the transient stability analysis of power systems. This emulator uses mixed-signal hardware to model the dynamic behavior of a power network. Special design allows the self-calibration of the analog electronics through successive measurements and correction steps. The calibration operation guarantees high resolution of the transient stability analysis results, so that they can be reliably used for operational planning and control on real power networks.
    Źródło:
    International Journal of Microelectronics and Computer Science; 2013, 4, 4; 142-147
    2080-8755
    2353-9607
    Pojawia się w:
    International Journal of Microelectronics and Computer Science
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Artificial intelligence methods in diagnostics of analog systems
    Autorzy:
    Bilski, P.
    Wojciechowski, J.
    Powiązania:
    https://bibliotekanauki.pl/articles/908112.pdf
    Data publikacji:
    2014
    Wydawca:
    Uniwersytet Zielonogórski. Oficyna Wydawnicza
    Tematy:
    fault detection
    artificial intelligence
    analog system
    detekcja uszkodzeń
    sztuczna inteligencja
    system analogowy
    Opis:
    The paper presents the state of the art and advancement of artificial intelligence methods in analog systems diagnostics. Firstly, the diagnostic domain is introduced and its problems explained. Then, computational intelligence approaches usable for fault detection and identification are reviewed. Particular groups of methods are presented in detail, explaining their usefulness and drawbacks. Examples, such as the induction motor or the electronic filter, are provided to show the applicability of the presented approaches for monitoring the state of analog objects from engineering domains. The discussion section reviews the presented approaches, their future prospects and problems to be solved.
    Źródło:
    International Journal of Applied Mathematics and Computer Science; 2014, 24, 2; 271-282
    1641-876X
    2083-8492
    Pojawia się w:
    International Journal of Applied Mathematics and Computer Science
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Construction of an Expert System Based on Fuzzy Logic for Diagnosis of Analog Electronic Circuits
    Autorzy:
    Grzechca, D. E.
    Powiązania:
    https://bibliotekanauki.pl/articles/226616.pdf
    Data publikacji:
    2015
    Wydawca:
    Polska Akademia Nauk. Czytelnia Czasopism PAN
    Tematy:
    analog circuits fault diagnosis
    analog system testing
    fuzzy set theory
    expert system
    sensitivity analysis
    Opis:
    The paper presents construction of the fuzzy logic system to analog circuits parametric fault diagnosis. The classical dictionary construction is replaced by fuzzy rule system. The first part refers to analog fault diagnosis, its techniques, approaches and goals. It clarifies common strategy and define differences between detecting, locating and identifying a fault in analog electronic circuit. The second part is focused on a creation of fuzzy rule expert system with use of sensitivity functions and known circuit topology. To detect, locate and identify a faulty element in a circuit the sensitivity matrix is used. The advantage of the method is its utilization in all, AC, DC and time domain. The fuzzy system, like the classical fault dictionary, can detect and locate single catastrophic faults and, on the contrary to the classical one, it also detects and locates parametric faults. Moreover, it allows identification of these faults, such that sign of the faulty parameter deviation is designated. The method has deterministic character as well as it can be applied on the verification and production stage.
    Źródło:
    International Journal of Electronics and Telecommunications; 2015, 61, 1; 77-82
    2300-1933
    Pojawia się w:
    International Journal of Electronics and Telecommunications
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Newtonian analog method in modeling the effects of urban planning self-organization
    Analogowa metoda Newtona w modelowaniu efektów samoorganizacji planowania przestrzennego
    Autorzy:
    Hoblyk, A.
    Powiązania:
    https://bibliotekanauki.pl/articles/370460.pdf
    Data publikacji:
    2015
    Wydawca:
    Zachodniopomorski Uniwersytet Technologiczny w Szczecinie. Wydawnictwo Uczelniane ZUT w Szczecinie
    Tematy:
    system planowania przestrzennego
    metoda analogowa Newtona
    potencjał czasoprzestrzenny obszaru
    lampa Lava
    urban planning system
    Newtonian analog method
    territory space-time organization potential
    Lava lamp
    Opis:
    Artykuł rozpatruje osobliwości związane z aplikacją analogowej metody Newtona w matematycznym modelowaniu efektu samoorganizacji w planowaniu przestrzennym. Prezentuje również analizę kompleksu produkcyjno-usługowego „Rynok Pivdennyy” („Rynek Południowy”) w Lwowie bazującą na technicznej analogii.
    The article deals with the peculiarities of application of Newtonian analog method in the problems of mathematical modeling of the urban planning project self-organization effect. It also presents analysis of the commercial-production complex 'Rynok Pivdennyy' ('Southern Market') development in the city of Lviv based on its technical analog.
    Źródło:
    Przestrzeń i Forma; 2015, 24/2; 67-76
    1895-3247
    2391-7725
    Pojawia się w:
    Przestrzeń i Forma
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Respiratory system model based on PSPICE
    Autorzy:
    Masana, F. N.
    Powiązania:
    https://bibliotekanauki.pl/articles/398140.pdf
    Data publikacji:
    2015
    Wydawca:
    Politechnika Łódzka. Wydział Mikroelektroniki i Informatyki
    Tematy:
    respiratory system model
    analog behavioral modeling
    nonlinear model
    open simulation environment
    PSPICE
    FVC maneuver
    tidal breathing
    model układu oddechowego
    ABM
    modelowanie behawioralne
    model nieliniowy
    środowisko symulacji
    manewr FVC
    oddychanie spokojne
    Opis:
    The aim of the present work is the building of a lumped nonlinear dynamic model of lung/airway mechanics using generic instead of specific software, in an attempt to offer an open simulation environment. Based on the analogy between pneumatic and electric magnitudes, an electrical equivalent circuit of the lung/airway mechanics is derived. Then, the nonlinear circuit elements are constructed by means of the powerful Analog Behavioral Modeling (ABM) building blocks and the system is solved using PSPICE. Following the approach in [3] and [4], five lumps are defined: two capacitors (elastances) corresponding to lung and collapsible airway segment and three resistors, corresponding to lung, collapsible airway segment and upper airway. The element definition involves as much as five parameters for the lung, four parameters for the collapsible segment and two parameters for the upper airway. The model does not attempt to mimic any particular system adjusting a given set of parameters but instead to provide a tool to explore the relationship between a given parameter or set of parameters and the system response. In particular, Forced Vital Capacity (FVC) maneuver and tidal breathing will be explored.
    Źródło:
    International Journal of Microelectronics and Computer Science; 2015, 6, 3; 102-109
    2080-8755
    2353-9607
    Pojawia się w:
    International Journal of Microelectronics and Computer Science
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Automatic parametric fault detection in complex analog systems based on a method of minimum node selection
    Autorzy:
    Bilski, A.
    Wojciechowski, J.
    Powiązania:
    https://bibliotekanauki.pl/articles/330761.pdf
    Data publikacji:
    2016
    Wydawca:
    Uniwersytet Zielonogórski. Oficyna Wydawnicza
    Tematy:
    complex analog system
    support vector machine (SVM)
    tabu search
    genetic algorithm
    parametric fault detection
    system analogowy
    maszyna wektorów wspierających
    metoda tabu search
    algorytm genetyczny
    detekcja uszkodzeń
    Opis:
    The aim of this paper is to introduce a strategy to find a minimal set of test nodes for diagnostics of complex analog systems with single parametric faults using the support vector machine (SVM) classifier as a fault locator. The results of diagnostics of a video amplifier and a low-pass filter using tabu search along with genetic algorithms (GAs) as node selectors in conjunction with the SVM fault classifier are presented. General principles of the diagnostic procedure are first introduced, and then the proposed approach is discussed in detail. Diagnostic results confirm the usefulness of the method and its computational requirements. Conclusions on its wider applicability are provided as well.
    Źródło:
    International Journal of Applied Mathematics and Computer Science; 2016, 26, 3; 655-668
    1641-876X
    2083-8492
    Pojawia się w:
    International Journal of Applied Mathematics and Computer Science
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Quick-response protection system against electric shock in distributed generation systems
    Autorzy:
    Shkrabets, Fedir
    Plaksin, Sergej
    Ostapchuk, Oleksandr
    Kuznetsov, Valeriy
    Tymchenko, Irina
    Muntian, Antonina
    Powiązania:
    https://bibliotekanauki.pl/articles/1840853.pdf
    Data publikacji:
    2021
    Wydawca:
    Polska Akademia Nauk. Polskie Towarzystwo Diagnostyki Technicznej PAN
    Tematy:
    electric networks
    protection
    reliability
    ground fault current
    electrical safety
    protection against electric shock
    signal processing system
    analog filtering
    sieci elektryczne
    ochrona
    niezawodność
    bezpieczeństwo elektryczne
    ochrona przeciwporażeniowa
    system przetwarzania sygnału
    filtracja analogowa
    Opis:
    The peculiarities of the operation of distributed generation systems lead to a change in the requirements for the reliability and safety of the power distribution systems in which they are integrated. To meet the increased requirements, continuous monitoring of the insulation parameters (active resistance and capacitance to ground) is often used with operating artificial non-industrial frequency operational signals introduced into the network. In the case of a sudden touch, such a system is not effective, since the response time of the protection device, which consists of the signal processing time and the operating of the actuator, is crucially important. For the used operational signals with a frequency of 100 and 200 Hz, the processing time using the Fourier transform is 10 ms for 100 Hz and 5 ms for 200 Hz. Considering that the response time of the fastest actuators (based on vacuum switches) is from 3 to 7 ms, this is a rather significant period of time. To develop an effective resolver system, the capabilities of the Matlab environment were used to determine the most successful design of an analog prototype (Butterworth, Bessel, Chebyshev and Cauer of 6th order) for an operational signal with a frequency of 200 Hz. As a result, the processing time was established, which varies widely from 3.5 to 19 ms. Taking into account the known indicators, namely the frequency and number of operational signals, a signal processing system was developed using the vector-matrix analysis method. As a result of modeling the processing characteristics of functional signals (at a sampling rate of 1 kHz), the system quick-response was 3 ms, with the possibility of its further decrease as its productiveness increases.
    Źródło:
    Diagnostyka; 2021, 22, 3; 59-65
    1641-6414
    2449-5220
    Pojawia się w:
    Diagnostyka
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Quick-response protection system against electric shock in distributed generation systems
    Autorzy:
    Shkrabets, Fedir
    Plaksin, Sergej
    Ostapchuk, Oleksandr
    Kuznetsov, Valeriy
    Tymchenko, Irina
    Muntian, Antonina
    Powiązania:
    https://bibliotekanauki.pl/articles/1840876.pdf
    Data publikacji:
    2021
    Wydawca:
    Polska Akademia Nauk. Polskie Towarzystwo Diagnostyki Technicznej PAN
    Tematy:
    electric networks
    protection
    reliability
    ground fault current
    electrical safety
    protection against electric shock
    signal processing system
    analog filtering
    sieci elektryczne
    ochrona
    niezawodność
    bezpieczeństwo elektryczne
    ochrona przeciwporażeniowa
    system przetwarzania sygnału
    filtracja analogowa
    Opis:
    The peculiarities of the operation of distributed generation systems lead to a change in the requirements for the reliability and safety of the power distribution systems in which they are integrated. To meet the increased requirements, continuous monitoring of the insulation parameters (active resistance and capacitance to ground) is often used with operating artificial non-industrial frequency operational signals introduced into the network. In the case of a sudden touch, such a system is not effective, since the response time of the protection device, which consists of the signal processing time and the operating of the actuator, is crucially important. For the used operational signals with a frequency of 100 and 200 Hz, the processing time using the Fourier transform is 10 ms for 100 Hz and 5 ms for 200 Hz. Considering that the response time of the fastest actuators (based on vacuum switches) is from 3 to 7 ms, this is a rather significant period of time. To develop an effective resolver system, the capabilities of the Matlab environment were used to determine the most successful design of an analog prototype (Butterworth, Bessel, Chebyshev and Cauer of 6th order) for an operational signal with a frequency of 200 Hz. As a result, the processing time was established, which varies widely from 3.5 to 19 ms. Taking into account the known indicators, namely the frequency and number of operational signals, a signal processing system was developed using the vector-matrix analysis method. As a result of modeling the processing characteristics of functional signals (at a sampling rate of 1 kHz), the system quick-response was 3 ms, with the possibility of its further decrease as its productiveness increases.
    Źródło:
    Diagnostyka; 2021, 22, 3; 59-65
    1641-6414
    2449-5220
    Pojawia się w:
    Diagnostyka
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Disassembly-free metrological control of analog-to-digital converter parameters
    Autorzy:
    Bubela, Tetiana
    Kochan, Roman
    Więcław, Łukasz
    Yatsuk, Vasyl
    Kuts, Victor
    Yatsuk, Jurij
    Powiązania:
    https://bibliotekanauki.pl/articles/2173896.pdf
    Data publikacji:
    2022
    Wydawca:
    Polska Akademia Nauk. Czytelnia Czasopism PAN
    Tematy:
    metrological support
    analog-to-digital converter
    non-disassembly control
    cyber-physical system
    nonlinearity
    additive component of error
    ACE
    multiplicative component of error
    Opis:
    The authors update the issue disassembly-free control and correction of all components of the error of measuring channels with multi-bit analog-to-digital converters (ADCs). The main disadvantages of existing methods for automatic control of the parameters of multi-bit ADCs, in particular their nonlinearity, are identified. Methods for minimizing instrumental errors and errors caused by limited internal resistances of closed switches, input and output resistances of active elements are investigated. The structures of devices for determining the multiplicative and nonlinear components of the error of multi-bit ADCs based on resistive dividers built on single-nominal resistors are proposed and analyzed. The authors propose a method for the correction of additive, multiplicative and nonlinear components of the error at each of the specified points of the conversion range during non-disassembly control of the ADC with both types of inputs. The possibility of non-disassembly control, as well as correction of multiplicative and nonlinear components of the error of multi-bit ADCs in the entire range of conversion during their on-site control is proven. ADC error correction procedures are proposed. These procedures are practically invariant to the non-informative parameters of active structures with resistive dividers composed of single-nominal resistors. In the article the prospects of practical implementation of the method of error correction during non-dismantling control of ADC parameters using the possibilities provided by modern microelectronic components are shown. The ways to minimize errors are proposed and the requirements to the choice of element parameters for the implementation of the proposed technical solutions are given. It is proved that the proposed structure can be used for non-disassembly control of multiplicative and nonlinear components of the error of precision instrumentation amplifiers.
    Źródło:
    Metrology and Measurement Systems; 2022, 29, 4; 669--684
    0860-8229
    Pojawia się w:
    Metrology and Measurement Systems
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
      Wyświetlanie 1-12 z 12

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