Autor: Tabaszewski, M. - Katalog OPAC zbiorów

Skocz do pozycji: 1.

Tytuł:: Evaluation of a simple method of identification of dynamic parameters of a single-degree-of-freedom system
Autorzy:: Tabaszewski, M.
Wojsznis, M.
Powiązania:: https://bibliotekanauki.pl/articles/127707.pdf
Data publikacji:: 2017
Wydawca:: Politechnika Poznańska. Instytut Mechaniki Stosowanej
Tematy:: impulse test
identification of dynamic parameters
single-degree-of-freedom system
test impulsowy
identyfikacja własności dynamicznych
układ o jednym stopniu swobody
Opis:: The paper presents a simple method of identification of dynamic parameters of single-degree-of-freedom systems based on an impulse test. Numerical simulations consisting in generating a model impulse excitation and the response of a model system with specified dynamic parameters to this excitation have been carried out to present the applicability range of the method. The influence on parameter estimation errors at various set values of these parameters and procedure parameters has been investigated.
Źródło:: Vibrations in Physical Systems; 2017, 28; 1-8
0860-6897
Pojawia się w:: Vibrations in Physical Systems
Dostawca treści:: Biblioteka Nauki

Artykuł

Skocz do pozycji: 2.

Tytuł:: Analysis of vibration transmission in an air-operated demolition hammer
Autorzy:: Tabaszewski, M.
Wojsznis, M.
Powiązania:: https://bibliotekanauki.pl/articles/128111.pdf
Data publikacji:: 2016
Wydawca:: Politechnika Poznańska. Instytut Mechaniki Stosowanej
Tematy:: vibrations
dynamic inputs
short-time Fourier transform
STFT
drgania
krótkoczasowa transformata Fouriera
Opis:: The paper presents an analysis of vibrations of a ram, body and handle of a heavy, air-operated demolition hammer. The research was conducted in order to determine the character of dynamic inputs and resulting vibrations at the tool handle which were necessary to build a structural model of local influences on an operator taking the hammer design into account. The experiment was carried out on a test stand without participation of an operator, which guaranteed repeatability of measurements and elimination of ontogenetic characteristics. The displacements of selected structural elements of the tool were recorded by means of a camera and the accelerations at the handle were recorded by means of a standard measuring apparatus. The recorded signals were subjected to the spectral analysis and the short-time Fourier transform (STFT) using dedicated software in MATLAB environment.
Źródło:: Vibrations in Physical Systems; 2016, 27; 385-390
0860-6897
Pojawia się w:: Vibrations in Physical Systems
Dostawca treści:: Biblioteka Nauki

Artykuł

Skocz do pozycji: 3.

Tytuł:: Identification of technical condition of valve clearance compensators using vibration measurement and machine learning
Autorzy:: Szymański, Grzegorz M.
Tabaszewski, Maciej
Powiązania:: https://bibliotekanauki.pl/articles/128095.pdf
Data publikacji:: 2019
Wydawca:: Politechnika Poznańska. Instytut Mechaniki Stosowanej
Tematy:: vibroacoustic diagnostics
combustion engine
machine learning
diagnostyka wibroakustyczna
silnik spalinowy
uczenie maszynowe
Opis:: The dynamic development of internal combustion engine design and requirements for high reliability generates the need to apply a strategy of their operation based on the current technical condition. The paper concerns vibration diagnostics of automatic compensators of valve lash of a combustion engine. It presents the course of an active experiment conducted in order to develop a methodology for identifying the state of compensators based on measures of vibration signals measured at the engine head. Based on the results of the experiment, a classifier was developed in the form of a decision tree, which with high accuracy identified the technical condition of the compensators. The set of simple rules obtained thanks to the built up trees allows for easy implementation of the diagnostic system in practice.
Źródło:: Vibrations in Physical Systems; 2019, 30, 2; 1-12
0860-6897
Pojawia się w:: Vibrations in Physical Systems
Dostawca treści:: Biblioteka Nauki

Artykuł

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