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Wyświetlanie 1-15 z 238
Tytuł:
Modelling of Unmanned Aerial Vehicle – Tricopter
Modelowanie bezzałogowego statku latającego typu tricopter
Autorzy:
Źrebiec, J.
Powiązania:
https://bibliotekanauki.pl/articles/282190.pdf
Data publikacji:
2016
Wydawca:
Akademia Górniczo-Hutnicza im. Stanisława Staszica w Krakowie. Wydawnictwo AGH
Tematy:
UAV modelling
flight dynamics
tricopter
BLDC
dynamika lotu
modelowanie UAV
bezzałogowy statek latający
Opis:
This paper presents detailed models of small aerial unmanned vehicle’s subsystems like propeller, BLDC motor or Li–poly batery. Furthermore, more accurate dynamic model of Tricopter is described. This, multi–system model can be used to synthesize pecise controller which may have the advantage in hazardous situations.
W niniejszym artykule zaprezentowano modele poszczególnych podsystemów wchodzących w skład bezzałogowych statków latających. Opisano między innymi zespół napędowy składający się z silnika bezszczotkowego (BLDC) i śmigła oraz akumulator litowo-polimerowy. Dodatkowo zaproponowano dokładniejszy model dynamiki lotu tricoptera. Przytoczone modele można wykorzystać do syntezy bardziej optymalnego regulatora, który może mieć przewagę w krytycznych sytuacjach.
Źródło:
Automatyka / Automatics; 2016, 20, 1; 7-25
1429-3447
2353-0952
Pojawia się w:
Automatyka / Automatics
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Kryteria wyboru bezzałogowych statków powietrznych do zadań inspekcji i transportu
Unmanned Air Vehicle selection criteria for inspection and transport tasks
Autorzy:
Kubat, M.
Smyczyński, P.
Granosik, G.
Powiązania:
https://bibliotekanauki.pl/articles/276203.pdf
Data publikacji:
2018
Wydawca:
Sieć Badawcza Łukasiewicz - Przemysłowy Instytut Automatyki i Pomiarów
Tematy:
BSP
bezzałogowe pojazdy latające
transport
inspekcja
hybrydowe BSP
UAV
inspection
Hybrid UAV
VTOL
Opis:
W artykule porównano różne typy bezzałogowych pojazdów latających przeznaczonych do zadań transportu oraz inspekcji. Rozpatrzono wielowirnikowce, samoloty, helikoptery oraz rozwiązania hybrydowe łączące cechy pozostałych typów. Każdy z typów pojazdów został scharakteryzowany przez maksymalny udźwig, zasięg, wyjątkowe cechy wyróżniające go na tle innych, złożoność konstrukcji oraz sposób sterowania. Porównanie to zostało wykonane na podstawie analizy literaturowej oraz własnego doświadczenia zdobytego podczas licznych zawodów związanych z zadaniami inspekcyjnymi, ratunkowymi i transportowymi. Zadania przygotowane na zawody wymagały pojazdów o pełnej lub częściowej autonomii. Pojazdy uwzględnione w analizie mieszczą się w skali od mikro- do taktycznych pojazdów bezzałogowych krótkiego zasięgu. Wyniki zebrano w tabeli, która podsumowuje zestaw cech każdego pojazdu, co umożliwia ocenę przydatności każdego z rozwiązań. Efektem jest koncepcja własna bezzałogowego pojazdu latającego, która łączy zalety innych konstrukcji starając się jednocześnie wyeliminować największe wady i dając szansę na zastosowanie w aplikacjach inspekcyjnych i transportowych.
The article shows the comparison of various types of unmanned aerial vehicles intended for transport and inspection tasks. We have considered multi-rotors, planes, helicopters and hybrid solutions combining features of other types. Each of the vehicles has been analyzed in terms of maximum load, range, exceptional features that distinguish them from others, the complexity of construction and control. The comparison was created based on literature analysis and our own experience from participation in multiple competition with inspection, emergency and transportation tasks. It is worth mentioning that competition task required full or partial autonomous mode. Vehicles which we are working on and which are compared in this paper can be classified between micro and tactical short range unmanned vehicles. Comparison was presented in form of table which present set of features for each type of vehicle, it makes it possible to evaluate their utility for considered tasks. Based on the analysis, our own concept of unmanned air vehicle was presented, it combines advantages of different constructions while trying to eliminate the greatest drawbacks; and we believe it is feasible to be applied in transport and inspection tasks.
Źródło:
Pomiary Automatyka Robotyka; 2018, 22, 3; 23-32
1427-9126
Pojawia się w:
Pomiary Automatyka Robotyka
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
UAV aircraft model for control system failures analysis
Autorzy:
Żugaj, M.
Bibik, P.
Jacewicz, M.
Powiązania:
https://bibliotekanauki.pl/articles/280867.pdf
Data publikacji:
2016
Wydawca:
Polskie Towarzystwo Mechaniki Teoretycznej i Stosowanej
Tematy:
UAV
flight dynamics
control
reconfiguration
Opis:
In the paper, influence of control surface failures on UAV aircraft dynamics is investigated. A method for control loads determination for a nonlinear UAV aircraft model is presented. The model has been developed to analyse the influence of various control surface failures on aircraft controllability and to form the background for developing reconfiguration methods of flight control systems. The analysis of the control system failure impact on the aircraft dynamics and the ability of the control system to reconfiguration are presented.
Źródło:
Journal of Theoretical and Applied Mechanics; 2016, 54, 4; 1405-1415
1429-2955
Pojawia się w:
Journal of Theoretical and Applied Mechanics
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Non-destructive evaluation of rescue and patrol unmanned aerial vehicle
Autorzy:
Pawluczy-Majka, J.
Powiązania:
https://bibliotekanauki.pl/articles/243854.pdf
Data publikacji:
2014
Wydawca:
Instytut Techniczny Wojsk Lotniczych
Tematy:
UAV
NDT diagnostics
active thermography
Opis:
With the growing intensity of civil usage of the UAV, one of the most important problems is safety. It consists of operational safe use of the UAV in the common air area and reliability of the aerial vehicle construction. Each flying object is subjected to external loads, which influence on it in flight and on the ground. The external loads are mainly caused by aerodynamic, weight and inertia influence, ground reaction force and the power unit [1]. That is why during service, UAV structures are prone to many mechanical and environmental conditions that can damage to composite structures in the form of delamination, fiber breakage, and matrix cracking. Monitoring the level and type of damage to a composite structure is vital to determining the component’s structural integrity and preventing the failure of the structure during flight [2]. Non-destructive testing which has been used so far to identify defects in the aircraft structure made from metallic materials has a quite limited application in the case of composite structures. With the growing use of composites in the aviation industry, a necessity appears to work out a method allowing identification of technological defects and damages appeared in the process of the UAV’s operation. The answer to the appearing demand could be, for instance, the active thermography technique used for the thin wall test of the skin elements of the UAV. The obtained research results bring closer the problem of selection of the quick, well-fitted non-destructive testing method depending on the kind of the diagnosed construction.
Źródło:
Journal of KONES; 2014, 21, 4; 411-416
1231-4005
2354-0133
Pojawia się w:
Journal of KONES
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
UAV – a useful tool for monitoring woodlands
Autorzy:
Zmarz, Anna
Powiązania:
https://bibliotekanauki.pl/articles/2037389.pdf
Data publikacji:
2014-06-25
Wydawca:
Uniwersytet Warszawski. Wydział Geografii i Studiów Regionalnych
Tematy:
UAV
woodland monitoring
image data
Opis:
Unmanned aerial systems are in many countries one of the most dynamically developing branches of technology. They have also been recognized and are being utilized by scientists who find remote sensing indispensable in their work. Today, it is increasingly common to find research teams utilizing so-called drones in field research. Unmanned systems are becoming ever more important for environment monitoring by, on the one hand, providing data from inaccessible or remote areas, and, on the other hand, reducing the human costs required by traditional large field teams while also increasing the efficiency of the work. This paper presents the possibility of utilizing UAVs for image data collection in woodland areas. Flights over Głuchów and an Arboretum were performed using two different UAVs (Mentor, AVI). The flights were made in 2010 in the middle of the growing season. Images were taken with Sigma DP2 digital cameras in four spectral channels: R (red), G (green), B (blue) and IR (infrared). Images were saved in 8-bit. The Głuchów forest complex is located in the Głuchów forest district, which forms a part of the Rogów forest division. From the administrative viewpoint, the forest division is located in the Łódzkie province, Skierniewicki Poviat. The Arboretum is a park with a collection of trees and shrubs from different regions of the world. The area is characterized by a high variability of species and trees of varying heights. It is located in the Łódzkie province, Skierniewicki Poviat.
Źródło:
Miscellanea Geographica. Regional Studies on Development; 2014, 18, 2; 46-52
0867-6046
2084-6118
Pojawia się w:
Miscellanea Geographica. Regional Studies on Development
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Documentation of hiking trails and wooden areas using unmanned aerial vehicles (UAV) in Tatra National Park
Autorzy:
Ćwiąkała, P.
Kocierz, R.
Puniach, E.
Nędzka, M.
Mamcarz, K.
Niewiem, W.
Wiącek, P.
Powiązania:
https://bibliotekanauki.pl/articles/101618.pdf
Data publikacji:
2017
Wydawca:
Polska Akademia Nauk. Stowarzyszenie Infrastruktura i Ekologia Terenów Wiejskich PAN
Tematy:
UAV
documentation
hiking trails
forest
Opis:
The research described in this article was conducted in the Tatra National Park in Poland, which is considered as one of the most-visited national parks in Europe. The exceptional popularity of this place is responsible for intensification of morphogenetic processes, resulting in the development of numerous forms of erosion. This article presents the outcomes of the research whose purpose was to verify the usability of unmanned aerial vehicles to check the condition of hiking trails and forests in alpine areas. An octocopter equipped with a non-metric camera was used for measurements. The paper sketches the methodology of data acquisition in harsh conditions and demanding locations of hiking trails on steep Tatra slopes. The paper also describes stages that lead to elaboration of basic photogrammetric products relying on SfM (Structure from Motion) technique. Finally, it shows the applicability of the prepared products to the evaluation of erosion along hiking trails, and to the study of plant succession or tree stand condition in the area located next to hiking trails.
Źródło:
Infrastruktura i Ekologia Terenów Wiejskich; 2017, IV/2; 1545-1561
1732-5587
Pojawia się w:
Infrastruktura i Ekologia Terenów Wiejskich
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Risk Assessment of Using a Contactless Method for Railway Surface Inspection as Alternative for Staff Inspection of Infrastructure
Autorzy:
Batko, Michał
Konieczny, Jarosław
Butor, Anna
Powiązania:
https://bibliotekanauki.pl/articles/27311593.pdf
Data publikacji:
2023
Wydawca:
Instytut Kolejnictwa
Tematy:
staff
inspection
infrastructure
monitoring
UAV
Opis:
Railway infrastructure managers are obliged to check technical condition of infrastructure in order to maintain safe traffic. Usually this is done using conventional methods and tools or directly through the inspections made by the technical staff . Technological development which is currently being experienced indicates the availability of new measurement methods that can be used to monitor the condition of railway infrastructure. However, the introduction of new methods for monitoring the infrastructure is usually a change affecting safety, which requires an assessment of the significance of the change for the maintenance of the required level of railway traffic safety. The authors assessed the significance of the change in the method of infrastructure monitoring and related risk assessment as a result of the use of the contactless method of checking the railway surface as an alternative method to staff inspections. Additional control measures or preventive measures for potential threats have also been indicated.
Źródło:
Problemy Kolejnictwa; 2023, 198; 98--95
0552-2145
2544-9451
Pojawia się w:
Problemy Kolejnictwa
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Przydatność dronów do kontroli stanu mostów
Helpfulness of unmanned aerial vehicles for bridge inspection
Autorzy:
Jarominiak, Andrzej
Powiązania:
https://bibliotekanauki.pl/articles/2057774.pdf
Data publikacji:
2021
Wydawca:
Stowarzyszenie Inżynierów i Techników Komunikacji Rzeczpospolitej Polskiej
Tematy:
kontrola stanu mostów
drony inspekcyjne
charakterystyka techniczna drona inspekcyjnego
wyposażenie drona inspekcyjnego
ceny dronów
bridge inspection
inspection unmanned aerial vehicles
technical characteristics inspection UAV
inspection UAV equipment
UAV
prices UAV
Opis:
Artykuł zawiera opinie na temat przydatności dronów do kontroli stanu mostów, wnioski z kontroli mostów przeprowadzonych przez Departament Transportu Stanu Minnesota (USA), ogólną charakterystykę dronów inspekcyjnych i szczegółową drona ELIOS 2. Informacje o cenach i kierunkach rozwoju dronów inspekcyjnych.
The article presents opinions on the suitability of Unmanned Aerial Vehicles for bridge inspection, conclusions from the bridge inspection carried out by the DOT Minnesota (USA), general characteristics of inspection UAV and detailed characteristics UAV ELIOS 2, information on prices and directions of development of inspection UAV’s.
Źródło:
Drogownictwo; 2021, 6; 169--175
0012-6357
Pojawia się w:
Drogownictwo
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Investigation of mechanical properties of a rigid body in magnetic levitation state
Autorzy:
Ładyżyńska-Kozdraś, E.
Sibilska-Mroziewicz, A.
Falkowski, K.
Powiązania:
https://bibliotekanauki.pl/articles/115612.pdf
Data publikacji:
2015
Wydawca:
Fundacja na Rzecz Młodych Naukowców
Tematy:
magnetic levitation
superconductors
Meissner effect
UAV catapult
lewitacja magnetyczna
nadprzewodniki
efekt Meissnera
katapulta UAV
Opis:
Levitation (from Latin levitas - lightness) is the process in which an object is suspended by a physical force against gravity, in a stable position without solid physical contact. The phenomenon of levitation, caused by magnetic forces is called magnetic levitation. The main advantage of magnetic levitation systems is the elimination of friction, which significantly influences reliability, capability, ecology and safety. The phenomenon of magnetic levitation can be used in Unmanned Aerial Vehicle (UAV) catapult. The article presents the results of experiments performed on the prototype magnetic catapult. Catapult has been designed for small, unmanned aircraft, weighing less than 2 kg. The results show the oscillations of levitating cart of magnetic catapult during simulated and actual take-off and landing procedures.
Źródło:
Challenges of Modern Technology; 2015, 6, 1; 23-27
2082-2863
2353-4419
Pojawia się w:
Challenges of Modern Technology
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
MODELOWANIE HAŁDY KRUSZYWA NATURALNEGO Z WYKORZYSTANIEM TECHNOLOGII UAV WRAZ Z ANALIZĄ DOKŁADNOŚCI
Modeling of natural aggregate heap using UAV technology with accuracy analysis
Autorzy:
SMACZYŃSKI, MACIEJ
Powiązania:
https://bibliotekanauki.pl/articles/896365.pdf
Data publikacji:
2019
Wydawca:
Poznańskie Towarzystwo Przyjaciół Nauk
Tematy:
UAV
GNSS
surface modeling
geomatics
Opis:
The purpose of this article is to determine the potential of imaging obtained using an unmannedaerial platform (UAV) to create a digital model of terrain for aggregate heaps (DTMs). In addition, the intermediategoal is to carry out an independent accuracy check of the calculated 3D model, which in the study will be referred to an independent measurement using GNSS technology. The research object was a heap of natural aggregate with irregular shape and height differences up to 11 meters. Three point clouds with different detail parameters were generated from the acquired images. For further analysis, a point cloud with the best ratio of terrain reflection accuracy to the calculated RMSE value was selected. Independent control of 3D model accuracy was based on seven heap control points measured in the field and the same points generated on the 3D model . The deviations of several centimeters between field control points and points from the model may indicate the great potential of UAV technology and the possibility of its use in various engineering tasks.
Źródło:
Badania Fizjograficzne Seria A - Geografia Fizyczna; 2019, 10(70); 103-117
2081-6014
Pojawia się w:
Badania Fizjograficzne Seria A - Geografia Fizyczna
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Unmanned aerial vehicles – source of new threats in the civil aviation
Autorzy:
Krakowiak, Ewelina
Powiązania:
https://bibliotekanauki.pl/articles/534382.pdf
Data publikacji:
2017
Wydawca:
Wyższa Szkoła Biznesu w Dąbrowie Górniczej
Tematy:
UAV
Safety
Aviation
Operation
Events
Opis:
The presence of unmanned aerial vehicles in the airspace is affected by stimulating the development of aviation but also led to the creation of a new kind of threat. The variety of design and versatility of their applications made unmanned aerial vehicles widely available to all people. The number of flight incidents involving UAV was largely caused by failure to follow the rules of safe operation and the lack of experience of the operator. Due to the effects which may entail collision with an unmanned aircraft, aviation authorities and the users themselves take a series of measures aimed at their elimination.
Źródło:
Security Forum; 2017, 1, Volume 1 No. 1/2017; 55-62
2544-1809
Pojawia się w:
Security Forum
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Real Time Implementation of Amphibious Unmanned Aerial Vehicle System for Horticulture
Autorzy:
Kumar, M. Arun
Sara, Dioline
Telagam, Nagarjuna
Raj, Balwinder
Powiązania:
https://bibliotekanauki.pl/articles/2202979.pdf
Data publikacji:
2023
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
CATIA
UAV
automation
thrust
throttle
Opis:
Automating the tasks that require manpower has been considered as an area of active research in science and technology. Challenges in designing such systems include accuracy in the parameters of performance, minimal hardware, cost-efficiency, and security. The efficiency of drones designed for replacing humans is often evaluated using their weight, flying time, and power consumption. Herein, the prototypebased Drone model has been designed and discussed for horticulture applications. In this model, a horticulture drone has been designed for structuring and cutting of plants in street interstates. This methodology focuses on automation engineering that is utilized for cutting the plants in less time and less power, thereby diminishing the contamination that may happen by utilizing fuels. The epic part of this plan includes the less weight drone predesigned using Computer-Aided Three-Dimensional Interactive Application (CATIA) V5 Software. The throttle for the motors is adjusted at 50% to get the required thrust for the Unmanned Aerial Vehicle (UAV) to fly. Experimental results show that the horticulture drone has comparatively more flying time and less power consumption.
Źródło:
International Journal of Electronics and Telecommunications; 2023, 69, 1; 127--132
2300-1933
Pojawia się w:
International Journal of Electronics and Telecommunications
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Research Studio for Testing Control Algorithms of Mobile Robots
Autorzy:
Dudzik, Sebastian
Szelag, Piotr
Baran, Janusz
Powiązania:
https://bibliotekanauki.pl/articles/1844460.pdf
Data publikacji:
2020
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
mobile robots
UAV
MATLAB Simulink
QDrone
Opis:
In recent years, a significant development of technologies related to the control and communication of mobile robots, including Unmanned Aerial Vehicles, has been noticeable. Developing these technologies requires having the necessary hardware and software to enable prototyping and simulation of control algorithms in laboratory conditions. The article presents the Laboratory of Intelligent Mobile Robots equipped with the latest solutions. The laboratory equipment consists of four quadcopter drones (QDrone) and two wheeled robots (QBot), equipped with rich sensor sets, a ground control station with Matlab-Simulink software, OptiTRACK object tracking system, and the necessary infrastructure for communication and security. The paper presents the results of measurements from sensors of robots monitoring various quantities during work. The measurements concerned, among others, the quantities of robots registered by IMU sensors of the tested robots (i.e., accelerometers, magnetometers, gyroscopes and others).
Źródło:
International Journal of Electronics and Telecommunications; 2020, 66, 4; 759-768
2300-1933
Pojawia się w:
International Journal of Electronics and Telecommunications
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Monitoring fotogrametryczny z wykorzystaniem bezzałogowego statku powietrznego na przykładzie osuwiska zlokalizowanego na zboczach poeksploatacyjnego zbiornika wodnego w KWB Adamów
Photogrammetric monitoring with the use of an unmanned aerial vehicle : case study of a landslide located on the slopes of a post-mining water reservoir in the KWB Adamów Mine
Autorzy:
Karwacki, Krzysztof
Powiązania:
https://bibliotekanauki.pl/articles/20064891.pdf
Data publikacji:
2022
Wydawca:
Państwowy Instytut Geologiczny – Państwowy Instytut Badawczy
Tematy:
monitoring osuwisk
fotogrametria UAV
odkrywkowa kopalnia węgla brunatnego
landslide monitoring
UAV photogrammetry
opencast lignite mine
Opis:
The article presents the results of monitoring of landslides related to opencast mining. The landslides formed on the slopes of an artificial water reservoir in the Adamów open-cast lignite mine. The photogrammetric method was used for monitoring. The study of landslide activity was performed on the basis of six photogrammetric surveys made with the DJI Phantom 4 Advanced UAV. Changes in the landslide extent and vertical displacements were determined in five measurement periods. For four periods, differential digital terrain models were made and the volume of displaced earth masses was calculated. The future extent of the landslide was determined on the basis of cracks visible in high-resolution optical photos. The research has shown that UAVs equipped with an optical camera are very useful in monitoring the stability of slopes of post-mining water reservoirs. The applied method provided detailed data on the size of displacements without compromising on safety of people involved in field surveys.
Źródło:
Przegląd Geologiczny; 2022, 70, 9; 671-681
0033-2151
Pojawia się w:
Przegląd Geologiczny
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
RIS-aided Multi-hop Backhauling for 5G/6G UAV-assisted Access Points
Autorzy:
Janji, Salim
Sroka, Paweł
Powiązania:
https://bibliotekanauki.pl/articles/24200733.pdf
Data publikacji:
2023
Wydawca:
Instytut Łączności - Państwowy Instytut Badawczy
Tematy:
backhaul link
multi-hop
RIS
UAV
Opis:
Drones are considered to be an important part of future 6G telecommunication systems. Thanks to their quick deployment potential, they provide additional connectivity options in the form of a flying hotspot. However, in such use cases, they typically require a wireless backhaul link to facilitate their proper operation, which might be a challenging task in dense urban environments. One of the potential methods that may be relied upon to connect such nodes is the integrated access and backhaul (IAB) approach, where part of the spectrum allocated to users accessing the base station is used for wireless backhauling. Thus, in this work, we consider the problem of establishing a multi-hop wireless backhaul link following the IAB concept, with the aid of drone relay stations (DRSs) and reconfigurable intelligent surfaces (RISs). We formulate the problem of coverage improvement with a fixed number of relays, assuming certain throughput requirements for the backhaul link. The simulations show that the use of RISs offers a coverage improvement in such a scenario or a reduction in the number of nodes involved in ensuring the required backhaul performance.
Źródło:
Journal of Telecommunications and Information Technology; 2023, 2; 63--69
1509-4553
1899-8852
Pojawia się w:
Journal of Telecommunications and Information Technology
Dostawca treści:
Biblioteka Nauki
Artykuł
Wyświetlanie 1-15 z 238

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