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    Wyświetlanie 1-4 z 4
    Tytuł:
    Study of Composite Insulator Sheds Subjected to Wheel Test
    Autorzy:
    Mackiewicz, M.
    Mikulski, J. L.
    Wańkowicz, J.
    Kucharski, S.
    Ranachowski, P.
    Ranachowski, Z.
    Powiązania:
    https://bibliotekanauki.pl/articles/353096.pdf
    Data publikacji:
    2017
    Wydawca:
    Polska Akademia Nauk. Czytelnia Czasopism PAN
    Tematy:
    composite insulators
    silicone rubber
    wheel test
    electrical surface discharges
    tracking and erosions
    Opis:
    The paper presents investigation of the properties of the surface and the material stiffness – flexibility of series of samples taken from the sheds of the composite insulators. The insulators were previously subjected to wheel test. The wheel test and 1000 h salt fog test are regarded as alternative examination of the material resistance to the effects of electrical surface discharges. There were investigated two series of the samples of the composite insulators sheds. Examined specimens, made of HTV silicone rubber, were taken from the sheds of medium-voltage composite insulators of two different manufacturers. Insulators of both types passed the 1000 h salt fog test without reservation. Meanwhile, the wheel test can provide a basis for better distinguishing between physical properties of the tested materials. In the case of the insulators of one of the manufacturers the wheel test result was negative. Cross puncture effect of the sheds took place in several places. In addition, sheds were covered with dark coating of varying thicknesses. The results of the study indicated a significantly stronger influence of electrical and temperature factors on the sheds under investigations during the wheel test than in the case of the 1000 h salt fog test. It can be stated that these tests cannot be considered as alternative and it seems that wheel test enables better distinguishing between properties of the materials.
    Źródło:
    Archives of Metallurgy and Materials; 2017, 62, 2A; 679-686
    1733-3490
    Pojawia się w:
    Archives of Metallurgy and Materials
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    A comprehensive cycloid pin-wheel precision reducer test platform integrated with a new dynamic measurement method of lost motion
    Autorzy:
    Yue, Huijun
    Wu, Xiangkai
    Shi, Zhaoyao
    Zhang, Yue
    Ye, Yong
    Zhang, Lintao
    Fu, Ying
    Powiązania:
    https://bibliotekanauki.pl/articles/2052087.pdf
    Data publikacji:
    2022
    Wydawca:
    Polska Akademia Nauk. Czytelnia Czasopism PAN
    Tematy:
    cycloid pin-wheel precision reducer
    RV reducer
    test platform
    comprehensive performance
    dynamic measurement of lost motion
    decomposition test method
    Opis:
    While cycloid pin-wheel precision reducers (referred to as RV reducers) are widely used in industrial robots, a widely accepted design standard or verification method of their test platforms is not available. In this study, a comprehensive sliding-separation test platform of RV reducers was developed. The test platform can test various measurement items such as transmission error, static measurement of lost motion, dynamic measurement of lost motion, torsional rigidity, no-load running torque, starting torque, backdriving torque, and transmission efficiency of the RV reducer for robots. The principle and method of dynamic measurement of lost motion tests based on the two-way transmission error method were studied and this test function was successfully integrated with the comprehensive test platform in order to increase the test items of the dynamic performance parameters of RV reducers. The measurement results of the no-load running torque of the RV reducer were consistent with the Stribeck curve. Based on the concept of optimal measurement speed, a decomposition test method of the geometric component of the dynamic measurement of lost motion and the elastic component of the dynamic measurement of lost motion was proposed in the dynamic measurement test of lost motion. Through precision calibration, function test and repeatability test, the results were compared with the data of enterprise’s samples. The consistent results have proved that the test platform met engineering requirements and measurement accuracy requirements. Based on the new test principle, the developed platform can test more parameters of RV reducers with high precision and display the comprehensive test performance.
    Źródło:
    Metrology and Measurement Systems; 2022, 29, 1; 207-229
    0860-8229
    Pojawia się w:
    Metrology and Measurement Systems
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Verification of hardware-in-the-loop test bench for evaluating steering wheel angle sensor performance for steer-by-wire system
    Autorzy:
    Pietruch, Michał
    Wetula, Andrzej
    Młyniec, Andrzej
    Powiązania:
    https://bibliotekanauki.pl/articles/2173902.pdf
    Data publikacji:
    2022
    Wydawca:
    Polska Akademia Nauk. Czytelnia Czasopism PAN
    Tematy:
    steering wheel angle sensor
    SAS
    steer-by-wire
    hardware-in-the-loop
    virtual test drives
    Opis:
    In recent years, the Steer-by-Wire (SBW) technology has been gaining popularity and replacing classical steering systems. It plays the most crucial role in autonomous cars where the vehicle must perform maneuvers on its own without driver’s intervention. One of the key components of this system is the steering wheel angle sensor (SAS). Its reliability and performance may affect driver’s life and health. The purpose of this paper is to show a test system to comprehensively evaluate the performance of the steering wheel angle sensor in the SBW system during real-world maneuvers and show how SAS parameters such as accuracy of angle, angular speed etc. affect car trajectory resulting in hit cones. For this purpose, a test system was built, with the use of virtual test drives based on CarMaker software, CANoe and VTSystem hardware. In order to evaluate its performance, the errors introduced by the system were determined. Additionally, using the realised test system, three commercial steering wheel angle sensors were tested and compared during a virtual test drive. Their errors were determined, as well as their performance in the SBW technology and the consistency of the obtained results with the parameters declared by the manufacturer were verified as well.
    Źródło:
    Metrology and Measurement Systems; 2022, 29, 4; 639--653
    0860-8229
    Pojawia się w:
    Metrology and Measurement Systems
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    The influence of damping changes on vertical dynamic loads of wheel – experimental investigations
    Wpływ zmian tłumienia na pionowe dynamiczne obciążenia kół - badania eksperymentalne
    Autorzy:
    Ślaski, G.
    Pikosz, H.
    Powiązania:
    https://bibliotekanauki.pl/articles/224067.pdf
    Data publikacji:
    2011
    Wydawca:
    Polska Akademia Nauk. Czytelnia Czasopism PAN
    Tematy:
    dynamiczne obciążenia kół
    obciążenia kół
    amortyzatory
    zawory obejściowe
    stanowisko badawcze
    vehicle dynamics
    suspension dynamics
    dynamics wheel load
    semi-active suspension
    EUSAMA test
    adjustable dampers
    Opis:
    In this paper the results of tests of vertical dynamic wheel loads due to changes in suspension damping level are presented. The changes in damping level were performed using semi-active shock absorbers with by-pass valve. The article presents suspension goals, the definition of dynamic loads of vehicle wheel, testing methods with the information on the used apparatus and sensors. In the end the results are presented, interpreted and compared with other researchers' results.
    W artykule przedstawiono wyniki badań pionowych dynamicznych obciążeń kół w zależności od zmian poziomu tłumienia zawieszenia dokonywanych z wykorzystaniem amortyzatorów o zmiennym w sposób ciągly tłumieniu, realizowanym za pomocą zaworów obejściowych. Artykuł przedstawia kolejno zadania zawieszenia, definicje obciążeń dynamicznych kół samochodu, metodykę badań i zastosowane stanowisko badawcze oraz czujniki. W końcowej części artykułu przedstawiono wyniki badań, zinterpretowano je i porównano z wynikami uzyskanymi przez innych badaczy.
    Źródło:
    Archives of Transport; 2011, 23, 2; 239-247
    0866-9546
    2300-8830
    Pojawia się w:
    Archives of Transport
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
      Wyświetlanie 1-4 z 4

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