Temat: moving sources - Katalog OPAC zbiorów

Skocz do pozycji: 1.

Tytuł:: Using Microphone Arrays to Detect Moving Vehicle Velocity
Autorzy:: Peral-Orts, R.
Velasco-Sánchez, E.
Campillo-Davó, N.
Campello-Vicente, H.
Powiązania:: https://bibliotekanauki.pl/articles/177948.pdf
Data publikacji:: 2013
Wydawca:: Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:: microphone array
sound location
moving sources
vehicle velocity
Opis:: The noise of motor vehicles is one of the most important problems as regards to pollution on main roads. However, this unpleasant characteristic could be used to determine vehicle speed by external observers. Building on this idea, the present study investigates the capabilities of a microphone array system to identify the position and velocity of a vehicle travelling on a previously established route. Such linear microphone array has been formed by a reduced number of microphones working at medium frequencies as compared to industrial microphone arrays built for location purposes, and operates with a processing algorithm that ultimately identifies the noise source location and reduces the error in velocity estimation
Źródło:: Archives of Acoustics; 2013, 38, 3; 407-415
0137-5075
Pojawia się w:: Archives of Acoustics
Dostawca treści:: Biblioteka Nauki

Artykuł

Skocz do pozycji: 2.

Tytuł:: Precise modelling of machine tool drives with ball screw thermal behavior
Autorzy:: Winiarski, Z.
Kowal, Z.
Jędrzejewski, J.
Kwaśny, W.
Powiązania:: https://bibliotekanauki.pl/articles/100072.pdf
Data publikacji:: 2017
Wydawca:: Wrocławska Rada Federacji Stowarzyszeń Naukowo-Technicznych
Tematy:: machine tool
feed drive
ball screw
moving heat sources
numerical simulation
Opis:: This paper briefly describes the current requirements which machine tool ball screws must meet and indicates the need for the modelling and numerical simulation of the latter. The structure of a holistic ball screw model and ways of modelling the properties of the ball screw in a turning centre, including the moving heat sources on the guides and in the screw-nut joint, are presented. The results of computing the heating up and displacements of a preloaded screw and the screw without preload are reported. The modelled changes in motion resistance and in displacements are shown to be in agreement with the results of measuring the current drawn by the drive’s motor. It is also shown that the models represent well the real physical phenomena occurring in the ball screw during the execution of repeatable work cycles by the drive.
Źródło:: Journal of Machine Engineering; 2017, 17, 1; 31-45
1895-7595
2391-8071
Pojawia się w:: Journal of Machine Engineering
Dostawca treści:: Biblioteka Nauki

Artykuł

Skocz do pozycji: 3.

Tytuł:: Interactions due to moving heat sources in generalized thermoelastic half-space using L-S model
Autorzy:: Sarkar, N.
Lahiri, A.
Powiązania:: https://bibliotekanauki.pl/articles/265642.pdf
Data publikacji:: 2013
Wydawca:: Uniwersytet Zielonogórski. Oficyna Wydawnicza
Tematy:: termosprężystość
źródło ciepła
procedura Laplace'a
generalized thermoelasticity
L-S model
elastic half-space
moving heat sources
eigenvalue approach
Opis:: A one-dimensional problem for a homogeneous, isotropic and thermoelastic half-space subjected to a moving plane of heat source on the boundary of the space, which is traction free, is considered in the context of Lord- Shulaman model (L-S model) of thermoelasticity. The Laplace transform and eigenvalue approach techniques are used to solve the resulting non-dimensional coupled equations. Numerical results for the temperature, thermal stress, and displacement distributions are represented graphically and discussed.
Źródło:: International Journal of Applied Mechanics and Engineering; 2013, 18, 3; 815-831
1734-4492
2353-9003
Pojawia się w:: International Journal of Applied Mechanics and Engineering
Dostawca treści:: Biblioteka Nauki

Artykuł

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