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    Wyświetlanie 1-9 z 9
    Tytuł:
    Application of stereovision, digital maps and inertial sensors for estimation of geographical location
    Autorzy:
    Barański, P.
    Polańczyk, M.
    Strumiłło, P.
    Powiązania:
    https://bibliotekanauki.pl/articles/115429.pdf
    Data publikacji:
    2010
    Wydawca:
    Fundacja na Rzecz Młodych Naukowców
    Tematy:
    sensor fusion
    GPS navigation
    stereovision
    digital maps
    dead reckoning
    Opis:
    The paper presents an approach that integrates stereoscopic images, numerical maps of terrain and inertial sensors’ signals for estimation of geographical location of system user. The proposed solution improves on the GPS system in terms of accuracy and it can be used also inside buildings where GPS readouts are not available. The system was designed with a view of blind pedestrians. The prototype employs the particle fi ltering algorithm to fuse data from diff erent sources.
    Źródło:
    Challenges of Modern Technology; 2010, 1, 1; 65-68
    2082-2863
    2353-4419
    Pojawia się w:
    Challenges of Modern Technology
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Estimation of stereo camera motion
    Autorzy:
    Polańczyk, M.
    Barański, P.
    Strzelecki, M.
    Powiązania:
    https://bibliotekanauki.pl/articles/1396540.pdf
    Data publikacji:
    2011
    Wydawca:
    Fundacja na Rzecz Młodych Naukowców
    Tematy:
    stereovision
    motion estimation
    Opis:
    The paper presents an algorithm for estimating the motion of a stereovision camera. The movement is calculated on the base of a sequence of depth pictures. While moving the camera can be held in hands without much impact on the prediction accuracy. The algorithm provides real-time data processing when a 2.5 GHz dual core computer is used.
    Źródło:
    Challenges of Modern Technology; 2011, 2, 1; 27-31
    2082-2863
    2353-4419
    Pojawia się w:
    Challenges of Modern Technology
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Fusion of data from inertial sensors, raster maps and GPS for estimation of pedestrian geographic location in urban terrain
    Autorzy:
    Barański, P.
    Polańczyk, M.
    Strumiłło, P.
    Powiązania:
    https://bibliotekanauki.pl/articles/221003.pdf
    Data publikacji:
    2011
    Wydawca:
    Polska Akademia Nauk. Czytelnia Czasopism PAN
    Tematy:
    pedestrian navigation
    data fusion
    GPS
    digital maps
    particle filtering
    electronic travel aids
    Opis:
    An electronic system and an algorithm for estimating pedestrian geographic location in urban terrain is reported in the paper. Different sources of kinematic and positioning data are acquired (i.e.: accelerometer, gyroscope, GPS receiver, raster maps of terrain) and jointly processed by a Monte-Carlo simulation algorithm based on the particle filtering scheme. These data are processed and fused to estimate the most probable geographical location of the user. A prototype system was designed, built and tested with a view to aiding blind pedestrians. It was shown in the conducted field trials that the method yields superior results to sole GPS readouts. Moreover, the estimated location of the user can be effectively sustained when GPS fixes are not available (e.g. tunnels).
    Źródło:
    Metrology and Measurement Systems; 2011, 18, 1; 145-157
    0860-8229
    Pojawia się w:
    Metrology and Measurement Systems
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Environment friendly electric motors for driving low-power farm devices and municipal installations
    Autorzy:
    Idziak, P.
    Barański, M.
    Powiązania:
    https://bibliotekanauki.pl/articles/101500.pdf
    Data publikacji:
    2016
    Wydawca:
    Polska Akademia Nauk. Stowarzyszenie Infrastruktura i Ekologia Terenów Wiejskich PAN
    Tematy:
    induction motor
    Line Start Permanent Magnet Synchronous Motor
    LSPMSM
    efficiency
    cogging torque
    Opis:
    The article presents the most important causes of energy losses in magnetic circuits of electrical machines and describes a new design of a synchronized induction motor. The basic operational parameters of two structures: induction machine with squirrel cage (IM) and newly designed machine with a rotor with permanent magnets and a copper squirrel cage (induction machine synchronized with self-starting (LSPMSM) have been identified and compared. Performance characteristics were determined for work in steady states. In both cases the stator, type Sg 100L-4B of 3 kW induction motor was used. It has been shown that the PSPMSM supplied from the public mains grid shows the efficiency approx. 5% higher than the conventional motor. The influence of the change in the supply voltage frequency on the work of both structures was tested, i.e. on the measured efficiency, power factor and the electricity from electrical grid. Studies have shown that the LSPMSM can be a replacement for an induction motor. It has been shown that the torque pulsations occurring in the new structure (cogging torque) do not increase the environmental risks.
    Źródło:
    Infrastruktura i Ekologia Terenów Wiejskich; 2016, III/1; 823-833
    1732-5587
    Pojawia się w:
    Infrastruktura i Ekologia Terenów Wiejskich
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Compared analysis of the transients and the steady states of squirrel-cage motor and LSPMSM
    Autorzy:
    Barański, M.
    Idziak, P.
    Łyskawiński, W.
    Powiązania:
    https://bibliotekanauki.pl/articles/97457.pdf
    Data publikacji:
    2014
    Wydawca:
    Politechnika Poznańska. Wydawnictwo Politechniki Poznańskiej
    Tematy:
    squirrel-cage motor
    line start permanent magnet synchronous motor
    starting process
    heating
    functional parameters
    Opis:
    In the paper the transients under starting process and the steady states of squirrel-cage motor (IM) and line start permanent magnet synchronous motor (LSPMSM) have been compared. The original stator of 3 kW induction motor type Sg 100L-4B, was used in both structures. In order to determine opportunities to increase energy parameters of LSPMSM the heating curves of both motors were compared. In LSPMSM the rotor with aluminum and copper cage was used. The basic operating parameters of the two structures which are characterized by identical stators were tested. Particular attention has been given to the transient under starting process. Efficiency, power factor and current in the stator windings obtained during measurements for both structures have been presented. The paper focuses on achieving a much higher output power for LSPMSM than an induction motor of the same size. The selected results of experimental tests were shown.
    Źródło:
    Computer Applications in Electrical Engineering; 2014, 12; 265-274
    1508-4248
    Pojawia się w:
    Computer Applications in Electrical Engineering
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Numerical analysis of hysteresis loss in pulse transformer
    Autorzy:
    Łyskawiński, W.
    Sujka, P.
    Szeląg, W.
    Barański, M.
    Powiązania:
    https://bibliotekanauki.pl/articles/140918.pdf
    Data publikacji:
    2011
    Wydawca:
    Polska Akademia Nauk. Czytelnia Czasopism PAN
    Tematy:
    straty histerezowe
    transformator impulsowy
    zjawiska sprzężone
    model Jilesa-Athertona
    hysteresis loss
    pulse transformer
    coupled electromagnetic-thermal phenomena
    Jiles-Atherton model
    Opis:
    In the paper, the mathematical model of coupled electromagnetic and thermal phenomena in the pulse transformer taking into account the magnetic hysteresis is presented. For the mapping of magnetic hysteresis, Jiles-Atherton model is applied. In order to solve field equations, the finite element method (FEM), "step-by-step" procedure and Newton-Raphson algorithm are used. Software elaborated on this basis is used for analysis of hysteresis loss in the core. Selected results of investigations are shown.
    Źródło:
    Archives of Electrical Engineering; 2011, 60, 2; 187-195
    1427-4221
    2300-2506
    Pojawia się w:
    Archives of Electrical Engineering
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Recognition of the 24-hour Noise Exposure of a Human
    Autorzy:
    Korbiel, T.
    Stępień, B.
    Batko, W.
    Barański, R.
    Mleczko, D.
    Pawlik, P.
    Blaut, J.
    Powiązania:
    https://bibliotekanauki.pl/articles/177799.pdf
    Data publikacji:
    2017
    Wydawca:
    Polska Akademia Nauk. Czytelnia Czasopism PAN
    Tematy:
    noise hazard
    24-hour noise exposure
    Personal Indicator of Noise Hazard
    acoustic monitoring
    Opis:
    The civilisation progress has caused noise to become one of essential pathogenic and life comfort decreasing factors. There are several legal regulations aimed at controlling the noise influence on humans. Assessment of the twenty-four-hour influence of noises in various environments constitutes an essential problem. The answer can be supplied by 24-hour monitoring of the sound pressure. This paper is an attempt to learn the real loading of humans by noises. A personal noise indicator was used in measurements. The human 24-hour activity was divided into cycles allowing to model noise hazards. The collected data, even though they did not signal exceeding of individual standards, in the 24-hour period indicated the essential noise influence. These results indicate the need of investigations to recognise the 24-hour noise load of a human, with taking into account various forms of their activity and the need of rest.
    Źródło:
    Archives of Acoustics; 2017, 42, 4; 601-607
    0137-5075
    Pojawia się w:
    Archives of Acoustics
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    TSSOI as an efficient tool for diagnostics of SOI technology in Institute of Electron Technology
    Autorzy:
    Barański, M.
    Domański, K.
    Grabiec, P.
    Grodner, M.
    Jaroszewicz, B.
    Kociubiński, A.
    Kucewicz, W.
    Kucharski, K.
    Marczewski, J.
    Niemiec, H.
    Sapor, M.
    Tomaszewski, D.
    Powiązania:
    https://bibliotekanauki.pl/articles/308825.pdf
    Data publikacji:
    2005
    Wydawca:
    Instytut Łączności - Państwowy Instytut Badawczy
    Tematy:
    SOI CMOS technology
    pixel detector
    test structure
    Opis:
    This paper reports a test structure for characterization of a new technology combining a standard CMOS process with pixel detector manufacturing technique. These processes are combined on a single thick-_lm SOI wafer. Preliminary results of the measurements performed on both MOS SOI transistors and dedicated SOI test structures are described in detail.
    Źródło:
    Journal of Telecommunications and Information Technology; 2005, 1; 85-93
    1509-4553
    1899-8852
    Pojawia się w:
    Journal of Telecommunications and Information Technology
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Crystalline Structure of Potassium Holmium Double Tungstate
    Autorzy:
    Borowiec, M.
    Dyakonov, V.
    Woźniak, K.
    Dobrzycki, Ł.
    Majchrowski, A.
    Michalski, E.
    Zubov, E.
    Khatsko, E.
    Zayarnyuk, T.
    Szewczyk, A.
    Gutowska, M.
    Rykova, A.
    Barański, M.
    Domukhovski, V.
    Shtyrkhunova, V.
    Iwanowski, P.
    Żmija, J.
    Szymczak, H.
    Powiązania:
    https://bibliotekanauki.pl/articles/1505085.pdf
    Data publikacji:
    2011-06
    Wydawca:
    Polska Akademia Nauk. Instytut Fizyki PAN
    Tematy:
    61.66.Fn
    Opis:
    The potassium holmium double tungstate was prepared by using top seeded solution growth technique. Structural investigations have been performed at room temperature. The $KHo(WO_4)_2$ single crystal belongs to the monoclinic space group C2/c with the unit-cell parameters: a = 10.624(2) Å, b = 10.352(2) Å, c = 7.5434(15) Å, β = $130.78(3)^{o}$, and Z = 4. The atomic coordinates, isotropic and anisotropic displacement parameters and interionic distances for the studied structure were determined.
    Źródło:
    Acta Physica Polonica A; 2011, 119, 6; 835-837
    0587-4246
    1898-794X
    Pojawia się w:
    Acta Physica Polonica A
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
      Wyświetlanie 1-9 z 9

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