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Tytuł:
Determination of the influence of calibration sphere parameters on the results of articulating probe head qualification
Autorzy:
Gruza, Maciej
Gąska, Adam
Gąska, Piotr
Harmatys, Wiktor
Sładek, Jerzy
Powiązania:
https://bibliotekanauki.pl/articles/103260.pdf
Data publikacji:
2018
Wydawca:
Stowarzyszenie Inżynierów i Techników Mechaników Polskich
Tematy:
articulating probe head
calibration
accuracy
przegubowa głowica sondy
kalibrowanie
precyzja
Opis:
The qualification of probe heads before the measurements performed with their usage is now a standard procedure. It is used for correction of probe head’s and measuring tip systematic errors. The calibration sphere, which is used for this process, should have adequately small form errors. However, it is not always possible to use a highly accurate spheres and it is a common practice to use a sphere that was provided by the manufacturer of the CMM for a long time. This is why, the authors have tried to answer the question about the impact of the calibration sphere inaccuracies on the results of probe head qualification process.
Źródło:
Advances in Science and Technology. Research Journal; 2018, 12, 2; 252-259
2299-8624
Pojawia się w:
Advances in Science and Technology. Research Journal
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Multiaxial transducers calibration
Autorzy:
Pieniążek, J.
Grądek, P.
Powiązania:
https://bibliotekanauki.pl/articles/243927.pdf
Data publikacji:
2017
Wydawca:
Instytut Techniczny Wojsk Lotniczych
Tematy:
accelerometer
calibration
auto-calibration
nonlinear regression
akcelerometr
kalibrowanie
autokalibracja
regresja nieliniowa
Opis:
The aim of present article is investigating properties of accelerometer calibration method, called automatic calibration. The research of transducer's model was conducted and chosen optimization algorithms were rated by the simulation method and also using real transducer. The aim of tests was examination of the possibility to find parameters of the transducer model considering influence of temperature and deviation of axes. Described optimal calibration process without special calibration apparatus considers also influence of temperature on acceleration measurement. Afterward, described calibration method was tested on real transducer. Obtained results show that the hybrid two-step algorithm is suitable to the multiaxial transducers calibration. In the research, accelerometer as triaxial transducer was chosen and subjected to tests and the results of simulation was recorded in the MATLAB workspace. From existing estimation, three algorithms were chosen: the quasi-Newton, simplex (Nelder-Mead), and Levenberg-Marquard. The experimental part of the calibration utilized the idea of using existing and known constant vector of the measured value like gravitational acceleration and magnetic field. Calibration with temperature compensation of real transducer was presented.
Źródło:
Journal of KONES; 2017, 24, 1; 299-308
1231-4005
2354-0133
Pojawia się w:
Journal of KONES
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Design of self-leveling table for FFF additive technology
Autorzy:
Coranič, Tomáš
Ružbarský, Juraj
Krenický, Tibor
Maščeník, Jozef
Powiązania:
https://bibliotekanauki.pl/articles/27323744.pdf
Data publikacji:
2023
Wydawca:
STE GROUP
Tematy:
additive technologies
calibration
Arduino
structural design
technologie addytywne
kalibrowanie
projekt konstrukcyjny
Opis:
The presented paper describes the conceptual design of a worktable intended mainly for use in combination with FFF additive technologies, calibrated using a gyroscope and accelerometer. The proposed system is based on a programmable Arduino platform that operates with three digital servomotors and a mechanical gyroscope. In the introduction, the theoretical assumptions, and definitions of basic concepts such as a gyroscope, electric motor, and RC servomotor are described. Subsequently, the contribution is devoted to the selection of suitable components, the schematic connection, and the design itself in the Autodesk Inventor program. In the conclusion, the anticipated benefits of using the technical solution when applied in FFF additive technologies are described.
Źródło:
Systemy Wspomagania w Inżynierii Produkcji; 2023, 12, 2; 109--117
2391-9361
Pojawia się w:
Systemy Wspomagania w Inżynierii Produkcji
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Acceptance and reverification of CMM in industrial conditions
Autorzy:
Koteras, Robert
Wieczorowski, Michał
Znaniecki, Piotr
Powiązania:
https://bibliotekanauki.pl/articles/103264.pdf
Data publikacji:
2018
Wydawca:
Stowarzyszenie Inżynierów i Techników Mechaników Polskich
Tematy:
Coordinate Measuring Machine
calibration
reverification
current inspection
współrzędnościowa maszyna pomiarowa
kalibrowanie
rewitalizacja
Opis:
Nowadays, coordinate measuring machines (CMM) are featured by a great degree of complexity and high accuracy of manufacturing. During use of a machine, usually after periodical maintenance it is highly recommended to perform a verification test according to the same procedures as a standard verification test, including a difference that performance conformity is checked with user’s declaration. Periodical verification should be performed as often as it comes from a user’s experience and after every interference influencing mechanical and electronic systems of a CMM that could potentially cause a change in its accuracy parameters. The best solution is employing for that purpose an independent accredited laboratory that is featured by high competence and experience. In the paper rules of acceptance and periodical verifications are described, sources of measurement errors resulting from CMM imperfections are presented as well as examples of results for specific measurement devices installed in industry were shown.
Źródło:
Advances in Science and Technology. Research Journal; 2018, 12, 1; 80-88
2299-8624
Pojawia się w:
Advances in Science and Technology. Research Journal
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Mikrometoda oznaczania aktywności karboksyloesterazy
Micromethod for the estimation of carboxyesterase activity
Autorzy:
Syrowatka, T.
Jurek, A.
Powiązania:
https://bibliotekanauki.pl/articles/877380.pdf
Data publikacji:
1971
Wydawca:
Narodowy Instytut Zdrowia Publicznego. Państwowy Zakład Higieny
Tematy:
aktywnosc karboksyloesteraza
enzymy
watroba
badania naukowe
szczury
uszkodzenia
krew
kalibrowanie
hydroliza
wzrost aktywnosci
Źródło:
Roczniki Państwowego Zakładu Higieny; 1971, 22, 6
0035-7715
Pojawia się w:
Roczniki Państwowego Zakładu Higieny
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
UCEL-em w cel
Autorzy:
Paul, Maciej.
Powiązania:
Przegląd Sił Zbrojnych 2021, nr 1, s. 75-79
Data publikacji:
2021
Tematy:
Broń strzelecka
Przyrządy obserwacyjno-celownicze
Celowniki
Kalibrowanie
Urządzenia
Obsługa i eksploatacja
Artykuł z czasopisma wojskowego
Opis:
Artykuł dotyczy zestawu do kalibrowania przyrządów celowniczych broni strzeleckiej. Autor omawia jego charakterystykę i budowę oraz opisuje eksploatację. Przybliża różne metody ustawiania przyrządów celowniczych. Przedstawia także ocenę zestawu i wskazuje konieczność wyposażenia w niego każdego pododdziału.
Fotografie.
Dostawca treści:
Bibliografia CBW
Artykuł
Tytuł:
Reliability level of reinforced concrete members designed according to belarussian national annexes to structural Eurocodes
Autorzy:
Tur, V. V.
Markouski, D.
Powiązania:
https://bibliotekanauki.pl/articles/403193.pdf
Data publikacji:
2018
Wydawca:
Politechnika Białostocka. Oficyna Wydawnicza Politechniki Białostockiej
Tematy:
reliability
limit state
partial factor
load
probabilistic model
calibration
niezawodność
limit
współczynnik częściowy
obciążenie
model probabilistyczny
kalibrowanie
Opis:
The article presents the results of reliability analysis of reinforced concrete structures designed and built in accordance with design codes that are valid in Belarus. It is noted that such structures have different reliability levels as well as failure probabilities. Approaches to assessment actions on structures, which stated in European and Belarusian codes were analysed. It is shown that in most cases codes, which are used for designing of the existing structures do not meet the modern requirements for safety of structures. Additionally the results of reliability-based calibration of partial factors using in precast concrete members design are presented. The calibration resulted in the reduced value of partial factors for permanent loads on precast elements
Źródło:
Budownictwo i Inżynieria Środowiska; 2018, 9, 4; 173-179
2081-3279
Pojawia się w:
Budownictwo i Inżynieria Środowiska
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Analysis of development tendencies of metrological technologies to control rangefinders of an electronic distance measurement instruments
Autorzy:
Burachek, Vsevolod
Khomushko, Dmytro
Tereshchuk, Oleksiy
Kryachok, Sergíy
Belenok, Vadim
Powiązania:
https://bibliotekanauki.pl/articles/43852820.pdf
Data publikacji:
2022
Wydawca:
Polska Akademia Nauk. Czasopisma i Monografie PAN
Tematy:
kalibrowanie
dalmierz
błąd pomiaru odległości
calibration
rangefinder
electronic distance measurement
reference linear station
root mean square
error distance measurement
Opis:
The article analyses the development of metrological control technologies for electronic distance measurement rangefinders to determine their main characteristic of accuracy – the root mean square error of distance measurement. It is established that the current reference linear bases are reliable and serve as the main means of transmitting a unit of length from the standards to the working means of measuring length. The article describes the existing linear reference bases and specifies their accuracy and disadvantages. It is concluded that the disadvantages of linear reference bases are deprived of the reference linear bases built in special laboratories. They use distances measured by the differential method with laser interferometers as reference distances. The application of such technology allowed to automate the processes of measurements and calculations. There is development of fibre-optic linear bases, in which optical fibres of known length are used as model lines. The article offers a new technical solution – a combination of fiber-optic and interference linear bases, which allows to qualitatively improve the system of metrological support of laser rangefinders. This is achieved by having a fiber-optic unit, which allows you to create baselines of increased length, while ensuring small dimensions of the baseline, and relative interference base, which provides high accuracy of linear measurements and does not require calibration of the base with a precision rangefinder, which eliminates several difficulties associated with changes in the refractive index, makes measurements independent of the wavelength of the radiation source and almost independent of the ambient temperature.
Źródło:
Advances in Geodesy and Geoinformation; 2022, 71, 1; art. no. e13, 2022
2720-7242
Pojawia się w:
Advances in Geodesy and Geoinformation
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
The Rolling Tool Development in Order to Improve the Geometry of a Tube Profile and to Reduce the Wear of Mill Rolls
Autorzy:
Knapiński, Marcin
Bobarikin, Yuri L.
Radkin, Yaroslav I.
Powiązania:
https://bibliotekanauki.pl/articles/27315827.pdf
Data publikacji:
2019
Wydawca:
STE GROUP
Tematy:
seamless pipes
continuous elongating process
calibers of mill rolls
accuracy of a tube profile
rury bezszwowe
proces wydłużania
kalibrowanie walców
Opis:
Increasing the accuracy of the geometrical parameters of tube profiles is one of the priority areas of modern tube industry. The profile of the calibers of rolls of the reeling mill exerts a significant influence over the distribution of stresses that appear in metal during the deformation process and the process of formation of the correct geometry of the obtained rough tube. The method for determining the optimal geometry of a mill roll profile has been developed. In accordance with this method the geometry of the calibers of the continuous three roll reeling mill was calculated. The research of the influence of geometrical parameters of the calibers of mill rolls on the accuracy of the obtained tube profile, the load of the rolling tool and the wear rate of the contact surface of mill rolls and a mandrel was carried out. The numerical simulation method was chosen as a research method. This method allows to carry out rather accurate analysis and to obtain reliable results on the stress-strain and thermal states of a billet during the material processing, gives the possibility to obtain numerical values of stresses, deformations, load parameters of the process, as well as allows to visualize the results that is essential for assessing the accuracy of the tube profile geometry. Numerical experiments of the elongating process of a rough tube on the three roll continuous reeling mill with different grooving of mill rolls were carried out. It was determined that using of the developed grooving will allow to get a rough tube of a higher accuracy with the minimal deviation from the shape of the profile. The use of the developed method of calculating the geometric parameters of the calibers of the continuous reeling mill will allow to obtain calibers with a high degree of resistance to wear due to the reduction of the resistance of the flow of metal and a uniform filling of the calibers in the deformation zone. The use of this grooving of mill rolls will reduce the load acting on the rolling tool during the production of hot-deformed seamless tubes.
Źródło:
New Trends in Production Engineering; 2019, 2, 2; 321-330
2545-2843
Pojawia się w:
New Trends in Production Engineering
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Ensuring identification accuracy of navigational accelerometer\s conversion function parameters in the gravity field of the earth
Zapewnienie dokładności wyznaczania parametrów funkcji przekształcenia akcelerometru nawigacyjnego w polu grawitacyjnym ziemi
Autorzy:
Chernyak, M. G.
Baranovska, I. M.
Terokhin, S.
Powiązania:
https://bibliotekanauki.pl/articles/213076.pdf
Data publikacji:
2016
Wydawca:
Sieć Badawcza Łukasiewicz - Instytut Lotnictwa
Tematy:
navigation accelerometer
calibration
identification
metrology model
instrumental errors
specified accuracy
akcelerometr nawigacyjny
kalibrowanie
identyfikacja
metrologiczny model
błędy instrumentalne
zadana dokładność
Opis:
The problems of determining instrumental errors of navigation accelerometer metrological model's coefficients determination by its calibration on an uniaxial swivel stand and ensuring the specified accuracy of the calibration were considered. Analytical expressions for calculating appropriate identification errors and conditions for the calibration equipment the implementation of which provides the desired accuracy of the accelerometer calibration were gained. Adequacy of those expressions and conditions by calibrating a navigation accelerometer of a real inertial navigation system was experimentally confirmed. Adequacy of those expressions and conditions by calibrating a navigation accelerometer of a real inertial navigation system was confirmed experimentally.
Praca skupia się na wyznaczeniu błędów instrumentalnych wyznaczania współczynników nieliniowego modelu pomiarowego akcelerometru nawigacyjnego podczas kalibracji na jednoosiowym stoisku obrotowym, ponadto zapewnieniu zadanej dokładności powyższej kalibracji. Otrzymano wzory analityczne do wyznaczenia odpowiednich odchyłek identyfikacji oraz wymagania dla stoiska pomiarowego, spełnienie których pozwoli na utrzymanie zadanej dokładności kalibracji akcelerometru. W drodze doświadczeń potwierdzono prawidłowość wyżej opisanych wzorów i wymagań, poprzez wykonanie kalibracji nawigacyjnego akcelerometru rzeczywistego inercyjnego systemu nawigacyjnego.
Źródło:
Prace Instytutu Lotnictwa; 2016, 4 (245); 16-25
0509-6669
2300-5408
Pojawia się w:
Prace Instytutu Lotnictwa
Dostawca treści:
Biblioteka Nauki
Artykuł
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