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    Wyświetlanie 1-4 z 4
    Tytuł:
    A high pressure resonator transducer with programmed correction of static characteristics
    Autorzy:
    Tomczuk, K.
    Powiązania:
    https://bibliotekanauki.pl/articles/220854.pdf
    Data publikacji:
    2013
    Wydawca:
    Polska Akademia Nauk. Czytelnia Czasopism PAN
    Tematy:
    pressure transducer
    quartz resonator
    algorithmic correction
    Opis:
    A high pressure resonator transducer (0 to 100 MPa) devised by the author has been described. The elastic element of the converter consists of a cylinder with an offset arranged axis hole. Quartz resonators were used for the measurement of deformations of the pipe. Based upon the results of the transducer testing, a new algorithmic method for the minimizalizsation of the temperature error, that eliminates the need for a temperature gauge has been worked out.
    Źródło:
    Metrology and Measurement Systems; 2013, 20, 4; 667-677
    0860-8229
    Pojawia się w:
    Metrology and Measurement Systems
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Structural modelling of throttle diagrams for measuring fluid parameters
    Autorzy:
    Pistun, Y.
    Matiko, H.
    Krykh, H.
    Matiko, F.
    Powiązania:
    https://bibliotekanauki.pl/articles/221041.pdf
    Data publikacji:
    2018
    Wydawca:
    Polska Akademia Nauk. Czytelnia Czasopism PAN
    Tematy:
    throttle diagram
    measuring transducer
    model
    fluid
    Opis:
    In the paper there are presented tools for structural modelling of throttle diagrams that are developed as a basis to building transducers used for measuring fluid parameters. The definitions of throttle diagrams are improved and their classification is developed. Dependences are obtained to calculate the number of measuring channels in a throttle diagram and the number of possible variants of measuring transducers using the combinatory apparatus. A procedure for mathematical description of throttle diagrams in the form of graphs is proposed which makes it possible to obtain all diagrams with different measuring channels on the basis of certain throttle diagram. The model is developed in the form of a graph. A schematic diagram and a mathematical model of a transducer measuring physical and mechanical parameters of Bingham plastic fluid are developed based on a throttle diagram.
    Źródło:
    Metrology and Measurement Systems; 2018, 25, 4; 659-673
    0860-8229
    Pojawia się w:
    Metrology and Measurement Systems
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Dynamic characteristics measurements of a force transducer against small and short-duration impact forces
    Autorzy:
    Djamal, M.
    Watanabe, K.
    Irisa, K.
    Prayogi, I. A.
    Takita, A.
    Yamaguchi, T.
    Fujii, Y.
    Powiązania:
    https://bibliotekanauki.pl/articles/221311.pdf
    Data publikacji:
    2014
    Wydawca:
    Polska Akademia Nauk. Czytelnia Czasopism PAN
    Tematy:
    dynamic force
    impulse response
    force transducer
    force sensor
    inertial force
    optical interferometer
    Opis:
    A method for evaluating the dynamic characteristics of force transducers against small and short-duration impact forces is developed. In this method, a small mass collides with a force transducer and the impact force is measured with high accuracy as the inertial force of the mass. A pneumatic linear bearing is used to achieve linear motion with sufficiently small friction acting on the mass, which is the moving part of the bearing. Small and short-duration impact forces with a maximum impact force of approximately 5 N and minimum half-value width of approximately 1 ms are applied to a force transducer and the impulse responses are evaluated.
    Źródło:
    Metrology and Measurement Systems; 2014, 21, 1; 59-66
    0860-8229
    Pojawia się w:
    Metrology and Measurement Systems
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Solution of some problems of single-scale wavelet transform processor using a magnetostatic surface wave device
    Autorzy:
    Lu, W.
    Kuang, L.
    Lü, X.
    Zhu, C.
    Zhang, T.
    Zhang, J.
    Powiązania:
    https://bibliotekanauki.pl/articles/221174.pdf
    Data publikacji:
    2012
    Wydawca:
    Polska Akademia Nauk. Czytelnia Czasopism PAN
    Tematy:
    wavelet transform processor
    magnetostatic surface wave (MSSW)
    interdigital transducer
    direct coupling
    insertion loss
    Opis:
    In this paper, we investigate the implementation schemes of a single-scale wavelet transform processor using magnetostatic surface wave (MSSW) devices. There are three implementation schemes: the interdigital transducer, the meander line transducer and the grating transducer. Because the interdigital transducer has excellent properties, namely, good frequency characteristic and low insertion loss, we use the interdigital transducer as the implementation scheme of a single-scale wavelet transform processor using MSSW device. In the paper, we also present the solutions to the three key problems: the direct coupling between the input transducer and the output transducer, the insertion loss, and the loss characteristics of the gyromagnetic film having an influence on the wavelet transform processor. There are two methods of reducing the direct coupling between the input transducer and the output transducer: increasing the distance between the input transducer and the output transducer, and placing a metal "wall" between the input transducer and the output transducer. There also are two methods of reducing the insertion loss of a single-scale wavelet transform processor using a MSSW device for scale: the appropriate thickness of the yttrium iron garnet (YIG) film and the uniform magnetic field. The smaller the ferromagnetic resonance linewidth of the gyromagnetic film, the smaller the magnetostatic wave propagation loss.
    Źródło:
    Metrology and Measurement Systems; 2012, 19, 4; 685-692
    0860-8229
    Pojawia się w:
    Metrology and Measurement Systems
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
      Wyświetlanie 1-4 z 4

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