Wyniki wyszukiwania - BazTech

1

Application of high-speed camera measurements for determination of energy losses generated in a vibrating belt of CVT transmission

Łatas Waldemar, Kot Adam

Bulletin of the Polish Academy of Sciences. Technical Sciences

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2023

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Vol. 71, nr 5

art. no. e146238

EN

The paper presents a proposition of the theoretical-experimental method of determination of power losses in the transversely vibrating rubber V-belt of continuously variable transmission. The article comprises the results of experimental tests conducted on a special test stand with a complete scooter drivetrain powered by a small two-stroke internal combustion engine. Such a configuration allows ensuring real CVT working conditions. A high-speed camera was used for the contactless measurement of belt vibrations and time-lapse image analysis was performed in dedicated software. An axially moving Euler–Bernoulli beam was assumed as the mathematical model. Longitudinal vibrations and nonlinear effects were omitted. Additionally, it was assumed that the belt material behaves according to the Kelvin–Voigt rheological model. Analysis of the damped free vibrations of the cantilever beam, made of the belt segment, allowed to determine the equivalent bending damping coefficient. The CVT power losses, due to bending in the rubber transmission belt, were obtained for the fixed working conditions after numerical calculations. The proposed methodology is a new approach in this research area, which allows to obtain results impossible to achieve with other measurement methods.

2

Test Bench Concept for Testing of Gripper Properties in a Robotic Palletizing Process

Panasiuk Jarosław, Kaczmarek Wojciech, Siwek Michał, Borys Szymon

Problemy Mechatroniki : uzbrojenie, lotnictwo, inżynieria bezpieczeństwa

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2022

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Vol. 13, Nr 2 (48)

51--64

EN

Palletizing and depalletizing processes require specialized equipment, such as grippers dedicated to the type and dimensions of the goods to be handled. The traditional approach used in the robotisation of palletizing workstations is therefore mainly based on the development of specialized grippers, whose design limits their use in other applications. The article presents a concept of a modular gripper system enabling palletization of goods in collective packaging, including cartons, shrink-wrap packs, and bags. The concept developed involves the construction of a gripper system based on common modules that provide for extensive parameterization of device operation. The authors also propose a test bench to test the properties of grippers in a robotic palletizing process.

PL

Procesy paletyzacji i depaletyzacji wymagają specjalistycznego osprzętu w postaci chwytaków dedykowanych do określonego typu i formatu towaru podlegającego paletyzacji. Tradycyjne podejście stosowane podczas robotyzacji stanowisk paletyzujących w głównej mierze opiera się więc na opracowaniu specjalistycznych chwytaków, których budowa ogranicza zastosowanie ich w innych aplikacjach. W artykule przedstawiono koncepcję modułowego systemu chwytaków umożliwiającego paletyzację towarów w opakowaniach zbiorczych w postaci kartonów oraz zgrzewek jak również opakowań workowych. opracowana koncepcja zakłada budowę systemu chwytaków w oparciu o wspólne moduły, które pozwalają na szeroki zakres parametryzacji pracy urządzeń. autorzy zaproponowali również stanowisko pomiarowe umożliwiające badanie własności chwytaków w zrobotyzowanym procesie paletyzacji.

3

Measurements of vibration using a high-speed camera - comparative tests

Kowalski Piotr

Vibrations in Physical Systems

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2020

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Vol. 31, nr 2

art. no. 2020211

EN

In the technical diagnostics and monitoring of high dynamic processes high-speed cameras are getting wider application. Recorded images sequence analysis of an object position makes possible to study also the oscillating movement. In this paper results of some exploratory research of test vibration signals are presented. The aim of the study was to examine the possibility of applying high-speed camera to vibration measurements in the frequency range up to 1000 Hz. The performed tests consisted in the simultaneous registration and analysis of vibration test signals using 4 alternative measuring systems. and then the determination of the frequency characteristics of vibration acceleration, total corrected (Wh characteristics) and uncorrected vibration acceleration values. The results of recorded image analyses of oscillating movement were compared with results of vibration acceleration measurements obtained using laser and piezoelectric transducers. Vibration acceleration spectra, the uncorrected and corrected (Wh characteristics) total vibration acceleration values were determined. Based on the achieved results, some limitations and conditions for the application of the high-speed camera used for vibration analyses have been identified. The test results confirmed the possibility of use of high-speed camera for research of low frequency vibration even at low displacements.

4

Determination of boom vibrations of the road header during cutting based on the analysis of images from high-speed cameras

Cheluszka Piotr, Mann Rajmund

New Trends in Production Engineering

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2019

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Vol. 2, Iss. 1

37--49

EN

Excavation, especially of hard rocks, using boom-type road headers is a source of strong vibrations of the boom in which they are equipped. These vibrations are transferred through construction nodes further to the turntable and the body of the road header. On the one hand, they are of great importance from the point of view of the durability and the reliability of the mining machine. On the other hand, they affect the variability of the parameters at which the process of cutting the heading face surface of a drilled roadway or tunnel is carried out. For the purpose of determining the vibration intensity of the boom of the road header a photogrammetry system based on two high-speed cameras Phantom Miro LC 120 was used. During the experimental investigations of the cutting process of a cement-sand block using the R-130 road header, the boom and turntable movements were recorded. The analysis of the time-lapse pictures of the recorded footage obtained from the high-speed cameras using dedicated TEMA 3D software allowed to determine the spatial trajectory of movement of the boom and the turntable during the cutting of the massive with specified mechanical properties with set values of the parameters of this process. Basing on the time courses of the coordinates of the boom and turntable characteristic points, the courses of the actual boom swinging speed and acceleration components of its vibrations were determined. The intensity of these vibrations was related to the conditions of the cutting process.

5

Magnetic ﬁeld analysis of the Inductive Dynamic Drive

Rodak M., Borkowski P.

Przegląd Elektrotechniczny

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2018

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R. 94, nr 4

47--50

EN

In this paper, the results of research about the Inductive Dynamic Drive are shown. This kind of drive is necessary component in the Ultra – Fast Hybrid Circuit Breakers, where it properly cooperates with a Vacuum Interrupter. This paper shows a result of electro – magnetic analysis using a 2D model of IDD in a Finite Element Method software. The article contains a description of laboratory stand where it is possible to check IDD’s speciﬁcation by using a high – speed camera.

PL

W artykule przedstawiono wybrane wyniki symulacji elektro – magnetycznej modelu 2D napędu indukcyjno – dynamicznego metodą elementu skończonego oraz badania dynamiki działania próźniowego członu zestykowego z napędem tego typu, stosowanym w ultraszybkich wyłącznikach prądu stałego. Do symulacji wykorzystano pakiet oprogramowania Ansoft Maxwell 2D, natomiast do badan dynamiki działania napędu zastosowano kamerę szybką Photron.

6

Analysis of cutting picks trajectory and cutterhead vibrations of roadheader with use of high-speed cameras

Mann R., Czerwiński K., Matusik K.

Mining – Informatics, Automation and Electrical Engineering

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2017

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R. 55, nr 3

77--84 [tekst ang.], 85--92 [tekst pol.]

EN

In order to identify the behavior of cutting picks during the process of mining with the use of a roadheader's cutterhead, an optic system has been employed. The main elements of the system were high-speed cameras. In conjunction with TEMA Motion 3D software (which is designed to analyze movement based on images registered in videos), this allowed for a detailed analysis of the trajectories of the boom, cutterheads, and cutting picks during the process of cutting. This article presents the process of conducting measurements as well as the results of a comparative analysis of the boom vibrations and movement trajectories of cutting picks on the cutterhead for selected cut types: progressive and degressive.

PL

Do identyfikacji ruchu noży w procesie urabiania głowicą urabiającą kombajnu chodnikowego wykorzystano zestaw optyczny, którego głównymi elementami były kamery szybkie. W powiązaniu z programem TEMA Motion 3D przeznaczonym do analizy ruchu na podstawie zarejestrowanego obrazu na filmach umożliwiło to szczegółową analizę torów ruchu wysięgnika, głowic urabiających i noży na głowicach w trakcie skrawania. W artykule przedstawiono proces prowadzenia pomiarów oraz wyniki analizy porównawczej drgań wysięgnika i torów ruchu noży na głowicy urabiającej dla wybranych skrawów: progresywnego i degresywnego.

7

Badanie zagrożeń występujących przy obróbce drewna z zastosowaniem kamery szybkiej

Dąbrowski M.

Bezpieczeństwo Pracy : nauka i praktyka

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2016

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nr 6

21-25

PL

Artykuł dotyczy problematyki eksperymentalnych badań dynamicznych zjawisk niebezpiecznych podczas obróbki drewna. Przedstawiono autorską metodę pomiaru prędkości odrzutu obrabianego materiału drzewnego z użyciem kamery szybkiej oraz programu komputerowego do analizy rejestrowanych obrazów. Metoda ta okazała się bardzo dokładna i niewrażliwa na zakłócenia wiórami i pyłami drewna, które stanowiły dotąd główną trudność w podjęciu eksperymentów naukowych. Nowa metoda może być również polecana do pomiarów prędkości innych gwałtownych i niebezpiecznych zjawisk występujących w procesach obróbki drewna generujących wióry i pyły.

EN

The article is devoted to problems in experimental testing of dangerous dynamic occurrences during wood working. An original method of measuring the speed of kickback of machined piece of wood as well as the new deploying the use of a high-speed camera and a specific computer program for evaluating registered images, were both described in the article. The new measurement method has proven to be very precise and insensitive to both wood chips and dust, which had been the main difficulty in earlier experiments. The new method can be also recommended to the measurements of speed of other violent and dangerous occurrences during woodworking processes which generate chips and dust.

8

FMC Video Acquisition Module with Camera Link Interface

Mielczarek A., Makowski D., Jabłoński G., Perek P., Orlikowski M.

International Journal of Microelectronics and Computer Science

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2012

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Vol. 3, nr 3

95-98

EN

The paper describes an universal module for video stream acquisition from fast cameras with Camera Link interface. The first version of the referenced standard defines three configurations: Base, Medium and Full. The developed module supports all of them achieving transmission speeds up to 5.44 Gb/s for raw image data in the Full configuration. The module is designed according to FPGA Mezzanine Card (FMC) standard and can cooperate with carrier boards containing High-Pin Count (HPC) version of the connector. The module was tested with the TEWS TAMC-641 module.

9

Badania prototypu działa pneumatycznego

Zbrowski A.

Problemy Eksploatacji

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2011

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nr 3

217-234

PL

W artykule zaprezentowano metodykę badań prototypu działa pneumatycznego kalibru 250 mm. Działo jest przeznaczone do realizacji testów zderzeniowych wykonywanych w badaniach konstrukcji lotniczych. Rozwiązanie umożliwia miotanie, za pomocą sprężonego powietrza, obiektów o rozmiarach pełnokalibrowych oraz podkalibrowych umieszczanych w sabocie. Przedstawiona metodyka umożliwia weryfikację unikatowego rozwiązania prototypowego z wykorzystaniem metod dekompozycji, definiowania parametrów krytycznych i identyfikacji źródeł usterek.

EN

The article presents the method for testing the prototype of the pneumatic gun with the calibre of 250 mm. The gun is intended for performing of impact tests used in the aviation equipment construction. The solution allows throwing, by means of compressed air, of objects of full-calibre or sub-calibre sizes placed in the clog. The presented method allows verification of the unique prototype solution with use of the decomposition methods, definitions of the critical parameters and identification of the defect sources.