scholarly journals Application of UAVs for assessment of bridge infrastructure

2021 ◽  
Vol 73 (11) ◽  
pp. 1095-1106
Keyword(s):  
Unmanned Aerial Vehicles ◽  
State Of The Art ◽  
Autonomous Systems ◽  
Transport Infrastructure ◽  
Life Estimation ◽  
Advantages And Disadvantages ◽  
Aerial Vehicles ◽  
Bridge Inspections ◽  
Service Life Estimation ◽  
Structural Inspection

The shortcomings of classical methods for inspection of transport infrastructure objects have led to the development of more efficient, more reliable, faster and cheaper procedures for condition assessment and load-bearing capacity and service life estimation of objects. In this context, different autonomous systems developed in the last decade have the most notable role and their development is continuously speeding up. This paper provides a state of the art review of the unmanned aerial vehicles application for structural inspection with a focus on bridges. The paper comprises the following: a review of the current regulations prescribing the types and frequency of inspections; a review of the current classical inspection methods with their advantages and disadvantages; analysis of advantages and disadvantages in application of unmanned aerial vehicles for bridge inspections and a review of the equipment commonly used in their development.

scholarly journals State of the Art and Problems of Defeat of Low, Slow and Small Unmanned Aerial Vehicles

2018 ◽  
Vol 13 (2) ◽  
Author(s):  
Dudush ◽  
Tyutyunnik ◽  
Trofymov ◽  
Bortnovs’kiy ◽  
Bondarenko
Keyword(s):  
Unmanned Aerial Vehicles ◽  
State Of The Art ◽  
Aerial Vehicles

Development on Fault Detection and Diagnosis of Unmanned Aerial Vehicles

2014 ◽  
Vol 494-495 ◽  
pp. 861-864
Author(s):  
Yi Peng Zhang ◽  
Ke Cai Cao
Keyword(s):  
Fault Detection ◽  
Unmanned Aerial Vehicles ◽  
Unmanned Aerial Vehicle ◽  
State Of The Art ◽  
Fault Detection And Diagnosis ◽  
The Past ◽  
Aerial Vehicles ◽  
Aerial Vehicle ◽  
Detection And Diagnosis

The reliability of unmanned aerial vehicles (UAVs) has caught the attention of many researchers in the past decades. This paper presents a review on the development and important issues of state-of-the-art researches in the field of fault detection and diagnosis (FDD) techniques. Faults on an individual unmanned aerial vehicle or a group of unmanned aerial vehicles are considered for providing an overall picture of fault detection and diagnosis approaches.

scholarly journals Main characteristics and perspectives of development of laser gyroscopes

2021 ◽  
Vol 8 (1) ◽  
pp. 4-9
Author(s):  
Sofiia Alpert
Keyword(s):  
Environmental Monitoring ◽  
Unmanned Aerial Vehicles ◽  
Flight Control ◽  
Sagnac Effect ◽  
Main Function ◽  
Advantages And Disadvantages ◽  
Aerial Vehicles ◽  
Laser Gyroscope ◽  
Navigation Information ◽  
Laser Gyroscopes

Nowadays unmanned aerial vehicles (drones) are applied for solution numerous remote sensing tasks. They give a new opportunites for conducting environmental monitoring and give images with a very high resolution. Unmanned aerial vehicles are applied for solution numerous agricultural problems. They give a detail picture of fields. Unmanned aerial vehicles are used to help increase crop production. With technology constantly improving, imaging of the crops will need to improve as well.Digital images obtained by unmanned aerial vehicles (drones) can be used in forestry, they are used for environmental monitoring, plant health assessment and analysis of natural disasters. Unmanned aerial vehicles are also used for mining, they are applied for mapping deposit sites, exploring for oil and gas, surveying mines.Laser gyroscope is an essential component of a drones flight control system. Laser gyroscopes provides orientation control of drone and essential navigation information to the central flight control systems. Laser gyroscopes provide navigation information to the flight controller, which make drones easier and safer to fly. Laser gyroscope is one of the most important components, allowing the drone to fly smooth even in strong winds. The smooth flight capabilities allows us to get images with high precision.Nowadays the main function of gyroscope technologies is to improve the unmanned aerial vehicles flight capabilities. It was described a structure and main characteristics of laser gyroscopes. It was noted, that laser gyroscope is operated on the principle of the Sagnac effect. Sagnac effect is a phenomenon encountered in interferometry that is elicited by rotation. It were described main advantages and disadvantages of laser gyroscopes. A comparative analysis of mechanical and laser gyroscopes was carried out too.It also was noted, that laser gyroscopes are applied in different areas, such as: inertial navigation systems, aircraft, ships, unmanned aerial vehicles (drones) and satellites. Nowadays laser technology is developed further. There are all prerequisites for improving the precision and other technical characteristics of laser gyroscopes.

scholarly journals A Semi-Physical Platform for Guidance and Formations of Fixed-Wing Unmanned Aerial Vehicles

Sensors ◽  
2020 ◽  
Vol 20 (4) ◽  
pp. 1136 ◽  
Author(s):  
Jun Yang ◽  
Arun Geo Thomas ◽  
Satish Singh ◽  
Simone Baldi ◽  
Ximan Wang
Keyword(s):  
Unmanned Aerial Vehicles ◽  
Formation Control ◽  
Physical Simulation ◽  
3D Visualization ◽  
Autonomous Systems ◽  
Level Control ◽  
Control Laws ◽  
Ongoing Research ◽  
Control Loops ◽  
Aerial Vehicles

Unmanned Aerial Vehicles (UAVs) have multi-domain applications, fixed-wing UAVs being a widely used class. Despite the ongoing research on the topics of guidance and formation control of fixed-wing UAVs, little progress is known on implementation of semi-physical validation platforms (software-in-the-loop or hardware-in-the-loop) for such complex autonomous systems. A semi-physical simulation platform should capture not only the physical aspects of UAV dynamics, but also the cybernetics aspects such as the autopilot and the communication layers connecting the different components. Such a cyber-physical integration would allow validation of guidance and formation control algorithms in the presence of uncertainties, unmodelled dynamics, low-level control loops, communication protocols and unreliable communication: These aspects are often neglected in the design of guidance and formation control laws for fixed-wing UAVs. This paper describes the development of a semi-physical platform for multi-fixed wing UAVs where all the aforementioned points are carefully integrated. The environment adopts Raspberry Pi’s programmed in C++, which can be interfaced to standard autopilots (PX4) as a companion computer. Simulations are done in a distributed setting with a server program designed for the purpose of routing data between nodes, handling the user inputs and configurations of the UAVs. Gazebo-ROS is used as a 3D visualization tool.

Unmanned Aerial Vehicles

2021 ◽  
pp. 208-251
Author(s):  
Giulia Casmiro Scarmagnani
Keyword(s):  
Unmanned Aerial Vehicles ◽  
Unmanned Aircraft ◽  
The European Union ◽  
Advantages And Disadvantages ◽  
The Third ◽  
Aerial Vehicles ◽  
The Us ◽  
General Secretariat ◽  
Phd Thesis ◽  
Counterterrorism Policy

Last January, the General Secretariat of the Council of the European Union produced an estimate that, by the year 2035, the drones' sector will create up to 100,000 new jobs and, in addition, will have an economic impact of more than ten billion euros per year. This chapter takes its cue precisely from the central importance of unmanned aerial vehicles, commonly known as drones, and tries to sum up their future. Indeed, despite the enormous success of drones over the decades, many are the criticisms related to unmanned aircraft on board. The first section aims at outlining an historical framework, while the second section analyses the impressive role played by drones within the counterterrorism policy of the US presidency, with particular regard to Barack Obama's mandate. The third section applies a SWOT type analysis to UAVs, taking into account both their advantages and disadvantages. Finally, the fourth section investigates the human factor problem within UAVs, which was inspired by Dr. Giovanni Miranda's PhD thesis.

scholarly journals METHODS AND MEANS OF COUNTERACTION OF ACOUSTIC AND OPTICAL RECONNAISSANCE UAV

2020 ◽  
Vol 6 (1) ◽  
pp. 149-154
Author(s):  
Nikita V. Ignatenko ◽  
Alexey N. Polikanin
Keyword(s):  
Deep Learning ◽  
Unmanned Aerial Vehicles ◽  
Autonomous Systems ◽  
Multiple Objects ◽  
Multiple Sensors ◽  
Aerial Vehicles ◽  
Main Computer ◽  
Computer Attacks ◽  
Control Technologies ◽  
Combining Information

For the last few years, the ease of purchasing and using unmanned aerial vehicles (UAVs), their affordable cost has increased the demand for them both by companies and individuals. However, these devices might carry out illegal actions, starting with smuggling of illegal goods, unauthorized intelligence and computer attacks. As a result, this led to the urgency of developing effective and available countermeasures to detect and neutralize drones that perform reconnaissance of objects with confidential information. The most successful are autonomous systems for detecting and suppressing drones, which include optoelectronic, acoustic radar and radio frequency sensors, information from which is combined on the main computer to identify the threat and make further decisions. However, real-time monitoring is a rather difficult process that requires timely detection of adverse events or conditions. This creates many complex tasks such as object detection, classification, tracking multiple objects, and combining information from multiple sensors. In recent years, researchers have used various techniques to solve these problems and made notable progress. Applying deep learning to detect and classify UAVs is considered a new concept. In this regard, it became necessary to provide a generalized overview of UAV control technologies used for reconnaissance.

scholarly journals Methods of teaching control systems for unmanned aerial vehicles by immersing them in virtual reality

2019 ◽  
pp. 17-22
Author(s):  
Aleksandr Ivanovich Efimov ◽  
Nikita Andreevich Balily
Keyword(s):  
Virtual Reality ◽  
Unmanned Aerial Vehicles ◽  
Control Systems ◽  
Training System ◽  
Aircraft Control ◽  
Advantages And Disadvantages ◽  
Aerial Vehicles ◽  
The One ◽  
Equipment Configuration ◽  
The Given

The subject of study is the implementation of control systems for unmanned aerial vehicles. As their solution, a method of teaching and testing of these systems by immersing the entire system and its individual components into a virtual reality as close as possible to real conditions is proposed. The advantages and difficulties of implementation in relation to each of the system modules involved are considered. For each of the difficulties the authors propose solutions. The most successful scopes of application are revealed, and also possibility of application of the given method to land and surface vehicles is allocated. In the framework of this work, the existing aircraft control systems and the use of virtual reality within the framework of training their individual parts are investigated and the option of extending the use of such methods to the entire control system with an analysis of the advantages and disadvantages of this approach is proposed. The novelty of this article lies in the training of control systems for unmanned aerial vehicles by immersing it in virtual reality. The completeness and flexibility of such a training system is able, on the one hand, to adapt to any equipment configuration, on the other hand, to provide the highest quality training. The most important aspect is ensuring that you can use a larger proportion of the learning algorithms than is possible in other cases. In addition, this approach to the crane is useful in the framework of video navigation in connection with the possibility of better implementation of computer vision. The article shows the relevance of the research and the effectiveness of this method in the framework of aircraft control systems and proposed its application to other vehicles.

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