Temat: axis - Katalog OPAC zbiorów

Skocz do pozycji: 1.

Tytuł:: Three-Axis Attitude Estimation Of Satellite Through Only Two-Axis Magnetometer Observations Using LKF Algorithm
Autorzy:: Mehrjardi, M. F.
Sanusi, H.
Ali, M. A. M.
Powiązania:: https://bibliotekanauki.pl/articles/221622.pdf
Data publikacji:: 2015
Wydawca:: Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:: satellite three-axis attitude estimation
two-axis magnetometer
observations
LKF
PD controller
Opis:: Estimation of satellite three-axis attitude using only one sensor data presents an interesting estimation problem. A flexible and mathematically effective filter for solving the satellite three-axis attitude estimation problem using two-axis magnetometer would be a challenging option for space missions which are suffering from other attitude sensors failure. Mostly, magnetometers are employed with other attitude sensors to resolve attitude estimation. However, by designing a computationally efficient discrete Kalman filter, full attitude estimation can profit by only two-axis magnetometer observations. The method suggested solves the problem of satellite attitude estimation using linear Kalman filter (LKF). Firstly, all models are generated and then the designed scenario is developed and evaluated with simulation results. The filter can achieve 10e-3 degree attitude accuracy or better on all three axes.
Źródło:: Metrology and Measurement Systems; 2015, 22, 4; 577-590
0860-8229
Pojawia się w:: Metrology and Measurement Systems
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 2.

Tytuł:: Method of safe landing the emergency quadrocopter
Metoda bezpiecznego lądowania awaryjnego kwadrokoptera
Autorzy:: Blagitko, B.
Mochulsky, Yu.
Powiązania:: https://bibliotekanauki.pl/articles/408424.pdf
Data publikacji:: 2018
Wydawca:: Politechnika Lubelska. Wydawnictwo Politechniki Lubelskiej
Tematy:: quadrocopter
3-axis gyroscope
3-axis accelerometer
3-axis magnetometer
kwadrokopter
żyroskop 3-osiowy
3-osiowy akcelerometr
3-osiowy magnetometr
Opis:: By means of mathematical modelling, the main features of emergency landing of quadrocopter are determined. The results of simulate landings of the quadrocopter in cases of failure of one of four pairs of electric motor screw are given. The methods of safe landing of an unmanned quadrocopter in case of failure of one of four pairs of motor-screw are proposed. The basis of the proposed methods is to use a parachuting effect. Parachuting achieved by forced off the power of the motor, which is located at the opposite end of the same yoke as faulty motor. As a result, the vertical speed of the quadrocopter at the time of landing significantly decreases in comparison with the speed of free fall.
Podstawowe cechy awaryjnego lądowania bezzałogowego kwadrokoptera zostały opisane metodami modelowania matematycznego. Zaproponowano metodę bezpiecznego lądowania bezzałogowego kwadrokoptera w przypadku awarii jednego z czterech par silnik-wirnik. Podstawą proponowanej metody jest zastosowanie efektu spadochronu. Efekt spadochronu jest osiągany poprzez przymusowe wyłączenia zasilania silnika elektrycznego, który znajduje się na przeciwległym końcu belki z uszkodzonym silnikiem. W rezultacie prędkość pionowa kwadrokoptera w momencie lądowania znacząco maleje w stosunku do prędkości swobodnego spadania.
Źródło:: Informatyka, Automatyka, Pomiary w Gospodarce i Ochronie Środowiska; 2018, 8, 4; 44-47
2083-0157
2391-6761
Pojawia się w:: Informatyka, Automatyka, Pomiary w Gospodarce i Ochronie Środowiska
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 3.

Tytuł:: Interests of 5 axis toolpaths generation for Wire Arc Additive Manufacturing of aluminum alloys
Autorzy:: Hascoët, J.-Y.
Querard, V.
Rauch, M.
Powiązania:: https://bibliotekanauki.pl/articles/99951.pdf
Data publikacji:: 2017
Wydawca:: Wrocławska Rada Federacji Stowarzyszeń Naukowo-Technicznych
Tematy:: additive manufacturing
5 axis manufacturing
WAAM
Opis:: Additive Manufacturing (AM) for metal part can be divided into two different types: The powder technology and the wire technology. Usually, powder is adapted for fine components and small parts whereas wire is used for structural components and large scale part. One of the main benefits of AM is to simplify assemblies by reducing the number of components and to provide a large freedom of design. A standard AM system consists of a combination of three blocks: a motion system, a heat source and a feedstock. For Wire Arc Additive Manufacturing (WAAM), the heat source is a welding generator and the feedstock is a wire. The motion system generally used is a 6 axis robot or a CNC machine. This paper aims to propose a methodology to generate 5 axis toolpaths for WAAM and highlight the main parameters which selection is a key issue to resolve. The goal is to compare 3 axis and 5 axis toolpaths on part accuracy, depending the clearance angle of the part.
Źródło:: Journal of Machine Engineering; 2017, 17, 3; 51-65
1895-7595
2391-8071
Pojawia się w:: Journal of Machine Engineering
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 4.

Tytuł:: Axis mundi jako klucz interpretacyjny teologii małych ojczyzn Franciszka Mantheya
„Axis mundi” as an interpretative key to Francis Manthey’s theology of small homelands
Autorzy:: Babiński, Jarosław
Powiązania:: https://bibliotekanauki.pl/articles/31044448.pdf
Data publikacji:: 2023
Wydawca:: Wydawnictwo Bernardinum
Tematy:: teologia małych ojczyzn
axis mundi
Franciszek Manthay
Mircea Eliade
Axis Mundi
theology of small homeland
Opis:: Mircea Eliade wprowadził w przestrzeń badań religioznawczych pojęcie axis mundi. Oznacza ono przyjęcie istnienia świętego, niezmiennego „centrum” – stałego punktu odniesienia, warunkującego postrzeganie i interpretowanie świata. Łączy ono różne wymiary rzeczywistości i daje jej całościową wizję. Axis mundi jest utożsamiane z wieloma elementami świata. Najczęściej jest nim dom – rozumiany jako miejsce narodzin, zamieszkania i rozwoju. Takie ujęcie pozwala odnieść tę kategorię do poglądów Franciszka Mantheya i stworzyć spójną wizję jego teologii małych ojczyzn.
Mircea Eliade introduced the concept of axis mundi into the fi eld of religious studies. It signifi es the assumption of the existence of a sacred, unchanging ‘centre’ – a fi xed point of reference, conditioning the perception and interpretation of the world. It connects various dimensions of reality and gives an overall vision of it. The axis mundi is identifi ed with many of the elements that make up the human world. Most often it is the home – the place of birth, residence and occupation. This perspective makes it possible to relate this category to the views of Francis Manthey and create a coherent vision of his theology of small homelands.
Źródło:: Studia Pelplińskie; 2023, 57; 15-26
0239-4456
Pojawia się w:: Studia Pelplińskie
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 5.

Tytuł:: Determination of influence of the parameters connected with the stabilization of the position on the 5-axis manipulators’ operation accuracy
Autorzy:: Gaska, A.
Harmatys, W.
Gruza, M.
Gaska, P.
Sladek, J.
Powiązania:: https://bibliotekanauki.pl/articles/100183.pdf
Data publikacji:: 2018
Wydawca:: Wrocławska Rada Federacji Stowarzyszeń Naukowo-Technicznych
Tematy:: pose accuracy
5-axis system
LaserTracer
CMM
Opis:: The 5-axis systems, especially those that use in their kinematic chain both prismatic joints and revolute kinematic pairs are gaining popularity in many scientific disciplines with manufacturing, metrology and robotics at the forefront. This is therefore important to undertake research aiming in identification of sources of inaccuracies in their functioning and investigation on possibility of eliminating or compensating them. A significant impact on 5-axis kinematic structures accuracy may be assigned to parameters associated with the stabilization of the machine position and angular position, such as position stabilization time, position overshoot and drift of positioning accuracy. These parameters are well described in ISO 9283 standard related to performance criteria and test methods for industrial robots. The methodology presented in this standard is adapted for testing the impact of mentioned parameters for functioning of 5-axis kinematic structures other than industrial robots, which mainly include five-axis coordinate measuring systems and machine tools. A series of experiments performed on five-axis coordinate measuring system is presented in this paper, their results are assessed in a quantitative manner and basing on them a general algorithm for assessing the significance of impact of position stabilization parameters on functioning of the manipulator is proposed.
Źródło:: Journal of Machine Engineering; 2018, 18, 2; 54-63
1895-7595
2391-8071
Pojawia się w:: Journal of Machine Engineering
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 6.

Tytuł:: The guide through brain-gut-enteric microbiota axis – regulation pathways and related disorders
Autorzy:: Kolasińska, Karolina
Kwiatkowski, Stanisław
Knap, Bartosz
Czerwiński, Grzegorz
Poniewierka, Elżbieta
Waszczuk, Ewa
Powiązania:: https://bibliotekanauki.pl/articles/1163424.pdf
Data publikacji:: 2018
Wydawca:: Przedsiębiorstwo Wydawnictw Naukowych Darwin / Scientific Publishing House DARWIN
Tematy:: brain-gut axis
enteric microbiota
gastrointestinal system
Opis:: The brain-gut axis is a complex system of connections between the central nervous system (CNS) and the digestive tract. Information within the axis is transmitted through many pathways (neural, endocrine, metabolic, immunological) and is strongly dependent on the microbiota inhabiting the gut. Therefore, the brain-gut axis is also called the “brain-gut-enteric microbiota axis”. Many studies are carried out to determine how it functions but the exact mechanism is still poorly understood. Unraveling the mystery of brain-gut-enteric microbiota axis seems to be crucial in understanding of many diseases and processes governing the human body.
Źródło:: World Scientific News; 2018, 109; 115-130
2392-2192
Pojawia się w:: World Scientific News
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 7.

Tytuł:: Analytic evaluation of rectilinearity of low rigidity shaft during hardening processes
Autorzy:: Świć, A.
Draczew, O.
Taranenko, V.
Majdalawi, S
Powiązania:: https://bibliotekanauki.pl/articles/103315.pdf
Data publikacji:: 2013
Wydawca:: Stowarzyszenie Inżynierów i Techników Mechaników Polskich
Tematy:: non-rigid shaft
shaft axis rectilinearity
hardening
Opis:: The essential influence of the unevenness of temperature distribution while heating in the technological process on dimensions stability of low rigidity elements was shown. The new approach was applied to formulate mathematical models, which describe the elastic and inelastic behaviour of piece using transfer functions and block diagrams, allowing to use frequency method for evaluation of the behaviour of dynamic semifinished element as the rigid body.
Źródło:: Advances in Science and Technology. Research Journal; 2013, 7, 17; 10-13
2299-8624
Pojawia się w:: Advances in Science and Technology. Research Journal
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 8.

Tytuł:: Triaxial Block of Navigation Accelerometer’s Metrological Model and Experimental Determination of its Parameters on the Uniaxial Rotary Stand
Autorzy:: Chernyak, N. G.
Palyushok, V. A.
Baranovska, I. M.
Powiązania:: https://bibliotekanauki.pl/articles/213906.pdf
Data publikacji:: 2014
Wydawca:: Sieć Badawcza Łukasiewicz - Instytut Lotnictwa
Tematy:: three-axis accelerometers navigation unit
calibration
metrology model
Opis:: Metrology model of triaxial navigation accelerometer unit as a vector transmitter, physical and mathematical foundations of a new method for its calibration on uniaxial rotary stand are considered. The aim is to determine the coefficients of metrology model for triaxial accelerometer unit by the method mentioned above. To ensure the identifiability of all coefficients of the metrological model, two installations of accelerometer unit on a platform of uniaxial rotary stand were introduced. Identification models for metrology model of triaxial accelerometer unit were produced. Experimental validation of the obtained identification coefficients models was carried out. The ability to calibrate a triaxial accelerometer navigation unit with the given accuracy was confirmed.
Źródło:: Prace Instytutu Lotnictwa; 2014, 4 (237) December 2014; 13-22
0509-6669
2300-5408
Pojawia się w:: Prace Instytutu Lotnictwa
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 9.

Tytuł:: Oprogramowanie wspomagające projektowanie wałów i osi
Software aiding the design of shafts and axis
Autorzy:: Łoboda, M.
Krysztofiak, A.
Dworecki, Z.
Przybył, J.
Powiązania:: https://bibliotekanauki.pl/articles/289372.pdf
Data publikacji:: 2006
Wydawca:: Polskie Towarzystwo Inżynierii Rolniczej
Tematy:: wał
oś
projektowanie
oprogramowanie
shaft
axis
software
design
Opis:: Praca dotyczy aplikacji wspomagającej pracę inżyniera w zakresie konstruowania wałów i osi. Algorytm analityczno-wykreślnej metody wyznaczania zarysu wałów i osi oprogramowano w środowisku C++ Builder 6.0 ilustrując każdy etap stosownymi szkicami i wykresami. Założony cel edukacyjny uzyskano wzbogacając budowany system o panele m.in. uczące poprawnego formułowania równań statyki dla rozpatrywanego wału/osi.
The work concerns of software application for support engineer's work in range of shaft and axis construction. The algorithm of analytic-graphical method of drafting the shafts and axis outline was created in environment C ++ Builder 6.0 with illustrating every stage appropriate drafts and graphs. Established educational aim was got by making additions in the built system among other things about panels teaching on expressing the right static equations for analyzable shaft/axis.
Źródło:: Inżynieria Rolnicza; 2006, R. 10, nr 13(88), 13(88); 323-332
1429-7264
Pojawia się w:: Inżynieria Rolnicza
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 10.

Tytuł:: Identification strategy of anisotropic behavior laws: application to thin sheets of Aluminium A5
Autorzy:: Znaidi, A.
Daghfas, O.
Gahbiche, A.
Nasri, R.
Powiązania:: https://bibliotekanauki.pl/articles/949142.pdf
Data publikacji:: 2016
Wydawca:: Polskie Towarzystwo Mechaniki Teoretycznej i Stosowanej
Tematy:: anisotropy
strategy
identification
behavior law
off-axis testing
Opis:: Numerical simulation provides a valuable assistance in the controlling of forming processes. The elasto-plastic orthotropic constitutive law is based on the choice of an equivalent stress, a hardening law and a plastic potential. An identification of the model parameters from an experimental database is developed. This database consists in hardening curves and Lankford coefficients of specimens subjected to off-axis tensile tests. The proposed identification strategy is applied to aluminum sheets. The behavior of this material is studied under several solicitations. The anisotropic behavior of the aluminum plate is modeled using the Barlat criterionand the hardening law. The obtained Lankford coefficients are compared to those which are identified by a different strategy.
Źródło:: Journal of Theoretical and Applied Mechanics; 2016, 54, 4; 1147-1156
1429-2955
Pojawia się w:: Journal of Theoretical and Applied Mechanics
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 11.

Tytuł:: Analysis of measured workpiece’s form errors influence on the accuracy of probe heads used on five-axis measuring systems
Autorzy:: Harmatys, W.
Gąska, A.
Gruza, M.
Gąska, P.
Sładek, J.
Powiązania:: https://bibliotekanauki.pl/articles/102182.pdf
Data publikacji:: 2017
Wydawca:: Stowarzyszenie Inżynierów i Techników Mechaników Polskich
Tematy:: articulating probe head
five-axis system
accuracy
CMM
Opis:: The five-axis measuring systems are one of the most modern inventions in coordinate measuring technique. They are capable of performing measurements using only the rotary pairs present in their kinematic structure. This possibility is very useful because it may cause significant reduction of total measurement time and costs. However, it was noted that high values of measured workpiece’s form errors may cause significant reduction of the accuracy of a five-axis measuring system. The investigation on the relation between these two parameters was conducted in this paper and possible reasons of decrease in measurement accuracy was discussed on the example of measurements of workpieces with form errors ranging from 0,5 to 1,7 millimetre.
Źródło:: Advances in Science and Technology. Research Journal; 2017, 11, 4; 305-310
2299-8624
Pojawia się w:: Advances in Science and Technology. Research Journal
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 12.

Tytuł:: Change of Easy Magnetization Axis and Frequency of Reflection Loss by Co-Ti Substitution in Barium Ferrite
Autorzy:: Yang, Su-Won
Kim, Jeong-Gon
Jeong, Kwang-Pil
Shim, Han-Ul
Cho, Seong-Il
Kim, Min-Young
Powiązania:: https://bibliotekanauki.pl/articles/354821.pdf
Data publikacji:: 2019
Wydawca:: Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:: barium ferrite
Co-Ti substitution
easy magnetization axis
Opis:: In this study, BaFe_12-2xCo_xTi_xO₁₉ (X : 0 to 2.0, 0.2) powders were synthesized by sol-gel process. TG-DTA, XRD, SEM, VSM, and Network analyzer were measured in order to influence easy magnetization axis change on the wave absorption frequency range change. The easy magnetization axis change of the annealed powder at 900°C and 1200°C was confirmed by the coercive force decreased 4,800 and 3,870 Oe to 260 and 269 Oe, respectively, at the substitution ratio of 0.8 and 1.0. And it was confirmed that the change of the easy magnetization axis affected the change of the wave absorption frequency. The wave absorption frequency of substituted Barium Ferrite was less than 10 GHz range after the easy magnetization axis of Barium ferrite changed to a-b plan direction. It was confirmed the BaFe_12-2xCo_xTi_xO₁₉(x=0.8 to 1.6) was synthesized by the sol-gel process and it was annealed at 900°C and 1200°C, which could be used as a wave absorber in the X-band region of 10 GHz less.
Źródło:: Archives of Metallurgy and Materials; 2019, 64, 3; 835-839
1733-3490
Pojawia się w:: Archives of Metallurgy and Materials
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 13.

Tytuł:: Feed drive simulation for the prediction of the tool path follow up in High Speed Machining
Autorzy:: Prevost, D.
Lavernhe, S.
Lartigue, C.
Powiązania:: https://bibliotekanauki.pl/articles/1429192.pdf
Data publikacji:: 2008
Wydawca:: Wrocławska Rada Federacji Stowarzyszeń Naukowo-Technicznych
Tematy:: simulation
high speed machining
5-axis machining
identification
Opis:: This paper deals with an advanced modeling of the feed drives of a five axis machine tool within the context of High Speed Machining. The management of the multi axes as well as high velocities causes problems to the set machine tool – Numerical Controller throughout the trajectory execution process. As a result, many errors are introduced during machining all process long affecting the surface quality. The paper aims at modeling the feed drive dynamics during trajectory follow-up including the current, the velocity and position loops as well as the feed forward terms, which characterize classical drives on actual HSM machines. It concerns translational axes as well as rotary axes. A procedure of identification of the virtual axis model are detailed for three and five axis trajectories presenting various types of geometrical discontinuities.
Źródło:: Journal of Machine Engineering; 2008, 8, 4; 32-42
1895-7595
2391-8071
Pojawia się w:: Journal of Machine Engineering
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 14.

Tytuł:: Misalignment detection on linear feed axis with FFT and statistical analysis using motor current
Autorzy:: Demetgül, Mustafa
Gu, Minjie
Hillenbrand, Jonas
Zhao, Yicheng
Gönnheimer, Philipp
Fleischer, Jürgen
Powiązania:: https://bibliotekanauki.pl/articles/2086276.pdf
Data publikacji:: 2022
Wydawca:: Wrocławska Rada Federacji Stowarzyszeń Naukowo-Technicznych
Tematy:: misalignment
FFT analysis
linear feed axis
motor current
Opis:: The linear feed axes are critical subsystems in many production machines and have important responsibilities such as transporting workpieces and tools in the process. Therefore, the component’s working condition is crucial for the production of high-quality products. Because these systems gradually deteriorate, it is necessary to detect these changes and occurring faults with condition monitoring systems. In this study, the motor current of feed axes is monitored for axis misalignment that occurs during or after assembly. We conduct diagnosis with Fast Fourier Transform (FFT) and statistical methods in order to differentiate different misalignment scenarios and operating constraints of the feed axis. Different states are achieved by simulating left and right axis misalignment and operating the table at different speeds and strokes.
Źródło:: Journal of Machine Engineering; 2022, 22, 2; 31--42
1895-7595
2391-8071
Pojawia się w:: Journal of Machine Engineering
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 15.

Tytuł:: Advanced car driving simulator - As 1200-6
Autorzy:: Kamiński, T.
Niezgoda, M.
Gacparska, J.
Grzeszczyk, R.
Filipek, P.
Powiązania:: https://bibliotekanauki.pl/articles/247245.pdf
Data publikacji:: 2011
Wydawca:: Instytut Techniczny Wojsk Lotniczych
Tematy:: road transport
driving simulator
six-axis motion platform
Opis:: Article describes advanced high class research simulator of passenger car with complete inside equipment including adjustable driver seat, steering wheel, dashboard, gear selector, accelerator pedal, brake and clutch, parking brake etc. Simulator is based on six axis motion platform and original vehicle cabin adapted from Opel Astra IV body, purchased by Motor Transport Institute. Furthermore, simulator is equipped with dedicated devices which allow conducting research on driver's behaviour which is not possible to conduct in real traffic situations due to the safety issues. Researcher can record parameters related to driver's activities, which could be next analyzed and combined with data received from other external instruments. AS1200-6 can be used also for drivers training in dangerous conditions e.g. learning how to react to the abnormal behaviour of other road users or pedestrians and learning how to drive in different weather conditions. This paper gives an overview of the hardware and software components as well as of the research possibilities that are aimed at making transportation safe and clean. The results of the research are very important especially for the road safety. The simulator enables simulation of dangerous traffic situation in the safe virtual environment.
Źródło:: Journal of KONES; 2011, 18, 4; 173-178
1231-4005
2354-0133
Pojawia się w:: Journal of KONES
Dostawca treści:: Biblioteka Nauki

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