Download or read book Aerospace power in the twenty first century a basic primer written by Clayton K. S. Chun and published by DIANE Publishing. This book was released on 2001 with total page 351 pages. Available in PDF, EPUB and Kindle. Book excerpt: Dr. Chun's Aerospace Power in the Twenty-First Century: A Basic Primer is a great start towards understanding the importance of aerospace power and its ability to conduct modern warfare. Aerospace power is continually changing because of new technology, threats, and air and space theories. However, many basic principles about aerospace power have stood the test of time and warfare. This book provides the reader with many of these time-tested ideas for consideration and reflection. Although Aerospace Power in the Twenty-First Century was written for future officers, individuals desiring a broad overview of aerospace power are invited to read, share, and discuss many of the ideas and thoughts presented here. Officers from other services will find that this introduction to air and space forces will give them a good grasp of aerospace power. More experienced aerospace leaders can use this book to revisit many of the issues that have affected air and space forces in the past and that might affect them in the future. Air Force officers will discover that Aerospace Power in the Twenty-First Century is a very timely and reflective resource for their professional libraries.

Download or read book Mobile Robot Localization and Map Building written by Jose A. Castellanos and published by Springer Science & Business Media. This book was released on 2012-12-06 with total page 212 pages. Available in PDF, EPUB and Kindle. Book excerpt: During the last decade, many researchers have dedicated their efforts to constructing revolutionary machines and to providing them with forms of artificial intelligence to perform some of the most hazardous, risky or monotonous tasks historically assigned to human beings. Among those machines, mobile robots are undoubtedly at the cutting edge of current research directions. A rough classification of mobile robots can be considered: on the one hand, mobile robots oriented to human-made indoor environments; on the other hand, mobile robots oriented to unstructured outdoor environments, which could include flying oriented robots, space-oriented robots and underwater robots. The most common motion mechanism for surface mobile robots is the wheel-based mechanism, adapted both to flat surfaces, found in human-made environments, and to rough terrain, found in outdoor environments. However, some researchers have reported successful developments with leg-based mobile robots capable of climbing up stairs, although they require further investigation. The research work presented here focuses on wheel-based mobile robots that navigate in human-made indoor environments. The main problems described throughout this book are: Representation and integration of uncertain geometric information by means of the Symmetries and Perturbations Model (SPmodel). This model combines the use of probability theory to represent the imprecision in the location of a geometric element, and the theory of symmetries to represent the partiality due to characteristics of each type of geometric element. A solution to the first location problem, that is, the computation of an estimation for the mobile robot location when the vehicle is completely lost in the environment. The problem is formulated as a search in an interpretation tree using efficient matching algorithms and geometric constraints to reduce the size of the solution space. The book proposes a new probabilistic framework adapted to the problem of simultaneous localization and map building for mobile robots: the Symmetries and Perturbations Map (SPmap). This framework has been experimentally validated by a complete experiment which profited from ground-truth to accurately validate the precision and the appropriateness of the approach. The book emphasizes the generality of the solutions proposed to the different problems and their independence with respect to the exteroceptive sensors mounted on the mobile robot. Theoretical results are complemented by real experiments, where the use of multisensor-based approaches is highlighted.

Download or read book Robot Navigation from Nature written by Michael John Milford and published by Springer. This book was released on 2007-12-21 with total page 203 pages. Available in PDF, EPUB and Kindle. Book excerpt: This pioneering book describes the development of a robot mapping and navigation system inspired by models of the neural mechanisms underlying spatial navigation in the rodent hippocampus. Computational models of animal navigation systems have traditionally had limited performance when implemented on robots. This is the first research to test existing models of rodent spatial mapping and navigation on robots in large, challenging, real world environments.

Download or read book ETUDE DE LA LOCALISATION D UN ROBOT MOBILE PAR FUSION DE DONNEES written by Philippe Arnould and published by . This book was released on 1993 with total page 157 pages. Available in PDF, EPUB and Kindle. Book excerpt: LES TRAVAUX PRESENTES, DANS CE MEMOIRE, CONCERNENT L'ETUDE DE LA LOCALISATION D'UN VEHICULE AUTONOME A PARTIR D'INFORMATIONS PROVENANT D'UN ODOMETRE ET D'UN MAGNETOMETRE. LE BUT EST D'OBTENIR DES INFORMATIONS DE POSITIONS ET DE CAP SUFFISAMMENT FIABLES ET PRECISES POUR ENVISAGER LA NAVIGATION DU VEHICULE SUR UNE DISTANCE LA PLUS LONGUE POSSIBLE ENTRE DEUX RECALAGES PAR RAPPORT A L'ENVIRONNEMENT. AFIN DE TIRER PARTIE AU MIEUX DES INFORMATIONS DISPONIBLES, DES TECHNIQUES DE FUSION DE DONNEES MULTICAPTEURS ONT ETE ELABOREES. ELLES PERMETTENT DE S'AFFRANCHIR DE LA PLUPART DES DEFAUTS INTRINSEQUES A CHAQUE CAPTEUR PRIS INDIVIDUELLEMENT. DEUX METHODES ONT ETE ETUDIEES ET TESTEES: UNE METHODE DE FUSION PAR DISCRIMINATION DE L'ORIENTATION OU L'ON COMPARE EN PERMANENCE L'INCERTITUDE DES DEUX CAPTEURS ET UNE METHODE DE FUSION PAR FILTRAGE DE KALMAN. LES RESULTATS OBTENUS SUR DES PARCOURS TYPES AVEC LA DEUXIEME METHODE NOTAMMENT MONTRE QUE L'ERREUR DE POSITION EN FIN DE PARCOURS EST RAMENEE A 0,5% DE LA DISTANCE PARCOURUE. L'UTILISATION DE TELLES TECHNIQUES REND POSSIBLE LA NAVIGATION SANS RECALAGE SUR DES DISTANCES DE QUELQUES DIZAINES DE METRES DE 100 METRES SUIVANT LA PRECISION REQUISE

Download or read book Semantic Labeling of Places with Mobile Robots written by Óscar Martinez Mozos and published by Springer. This book was released on 2010-01-10 with total page 145 pages. Available in PDF, EPUB and Kindle. Book excerpt: During the last years there has been an increasing interest in the area of service robots. Under this category we find robots working in tasks such as elderly care, guiding, office and domestic assistance, inspection, and many more. Service robots usually work in indoor environments designed for humans, with offices and houses being some of the most typical examples. These environments are typically divided into places with different functionalities like corridors, rooms or doorways. The ability to learn such semantic categories from sensor data enables a mobile robot to extend its representation of the environment, and to improve its capabilities. As an example, natural language terms like corridor or room can be used to indicate the position of the robot in a more intuitive way when communicating with humans. This book presents several approaches to enable a mobile robot to categorize places in indoor environments. The categories are indicated by terms which represent the different regions in these environments. The objective of this work is to enable mobile robots to perceive the spatial divisions in indoor environments in a similar way as people do. This is an interesting step forward to the problem of moving the perception of robots closer to the perception of humans. Many approaches introduced in this book come from the area of pattern recognition and classification. The applied methods have been adapted to solve the specific problem of place recognition. In this regard, this work is a useful reference to students and researchers who want to introduce classification techniques to help solve similar problems in mobile robotics.

Download or read book Active Sensors for Local Planning in Mobile Robotics written by Penelope Probert Smith and published by World Scientific. This book was released on 2001 with total page 337 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book describes recent work on active sensors for mobile robots. An active sensor interacts with its surroundings to supply data on demand for a particular function, gathering and abstracting information according to need rather than acting as a generic data gatherer. Details of the physical operation are hidden. The book deals mainly with active range sensors, which provide rapid information for local planning, describing extraction of two-dimensional features such as lines, corners and cylinders to reconstruct a plan of a building. It is structured according to the physical principles of the sensors, since to a large extent these determine the function of the sensors and the methods of processing. Recent work using sonar, optoelectronic sensors and radar is described. Sections on vision and on sensor management develop the idea of software adaptation for efficient operation in a changing environment. Contents: The Mapping and Localisation Problem; Perception at Millimetre Wavelengths; Advanced Sonar: Principles of Operation and Interpretation; Smooth and Rough Target Modelling: Examples in Mapping and Texture Classification; Sonar Systems: A Biological Perspective; Map Building from Range Data Using Mathematical Morphology; Millimetre Wave Radar for Robotics; Optoelectronic Range Sensors; AMCW LIDAR Range Acquisition; Extracting Lines and Curves from Optoelectronic Range Data; Active Vision for Mobile Robot Navigation; Strategies for Active Sensor Management. Readership: Graduate students and final year undergraduate students in electrical and electronic engineering, systems and knowledge, robotics, image processing and artificial intelligence.

Download or read book 3D Position Tracking and Control for All Terrain Robots written by Pierre Lamon and published by Springer Science & Business Media. This book was released on 2008-04-25 with total page 112 pages. Available in PDF, EPUB and Kindle. Book excerpt: Rough terrain robotics is a fast evolving field of research and a lot of effort is deployed towards enabling a greater level of autonomy for outdoor vehicles. This book demonstrates how the accuracy of 3D position tracking can be improved by considering rover locomotion in rough terrain as a holistic problem. Although the selection of appropriate sensors is crucial to accurately track the rover’s position, it is not the only aspect to consider. Indeed, the use of an unadapted locomotion concept severely affects the signal to noise ratio of the sensors, which leads to poor motion estimates. In this work, a mechanical structure allowing smooth motion across obstacles with limited wheel slip is used. In particular, it enables the use of odometry and inertial sensors to improve the position estimation in rough terrain. A method for computing 3D motion increments based on the wheel encoders and chassis state sensors is developed. Because it accounts for the kinematics of the rover, this method provides better results than the standard approach. To further improve the accuracy of the position tracking and the rover’s climbing performance, a controller minimizing wheel slip is developed. The algorithm runs online and can be adapted to any kind of passive wheeled rover. Finally, sensor fusion using 3D-Odometry, inertial sensors and visual motion estimation based on stereovision is presented. The experimental results demonstrate how each sensor contributes to increase the accuracy and robustness of the 3D position estimation.

Download or read book Advanced Mobile Robotics written by DaeEun Kim and published by MDPI. This book was released on 2020-03-06 with total page 498 pages. Available in PDF, EPUB and Kindle. Book excerpt: Mobile robotics is a challenging field with great potential. It covers disciplines including electrical engineering, mechanical engineering, computer science, cognitive science, and social science. It is essential to the design of automated robots, in combination with artificial intelligence, vision, and sensor technologies. Mobile robots are widely used for surveillance, guidance, transportation and entertainment tasks, as well as medical applications. This Special Issue intends to concentrate on recent developments concerning mobile robots and the research surrounding them to enhance studies on the fundamental problems observed in the robots. Various multidisciplinary approaches and integrative contributions including navigation, learning and adaptation, networked system, biologically inspired robots and cognitive methods are welcome contributions to this Special Issue, both from a research and an application perspective.

Download or read book Autonomous Mobile Robots in Unknown Outdoor Environments written by Xiaorui Zhu and published by CRC Press. This book was released on 2017-12-15 with total page 340 pages. Available in PDF, EPUB and Kindle. Book excerpt: Mobile robots have been increasingly applied in many different scenarios, such as space exploration and search and rescue, where the robots are required to travel over uneven terrain while outdoors. This book provides a new framework and the related algorithms for designing autonomous mobile robotic systems in such unknown outdoor environments.

Download or read book Mobile Robots Navigation written by Alejandra Barrera and published by BoD – Books on Demand. This book was released on 2010-03-01 with total page 684 pages. Available in PDF, EPUB and Kindle. Book excerpt: Mobile robots navigation includes different interrelated activities: (i) perception, as obtaining and interpreting sensory information; (ii) exploration, as the strategy that guides the robot to select the next direction to go; (iii) mapping, involving the construction of a spatial representation by using the sensory information perceived; (iv) localization, as the strategy to estimate the robot position within the spatial map; (v) path planning, as the strategy to find a path towards a goal location being optimal or not; and (vi) path execution, where motor actions are determined and adapted to environmental changes. The book addresses those activities by integrating results from the research work of several authors all over the world. Research cases are documented in 32 chapters organized within 7 categories next described.

Download or read book La robotique mobile written by Luc Jaulin and published by ISTE Group. This book was released on 2015-06-01 with total page 275 pages. Available in PDF, EPUB and Kindle. Book excerpt: La robotique mobile est une discipline en plein essor avec notamment l’apparition des drones volants, des robots sous-marins détecteurs de mines, des robots voiliers ou encore des robots aspirateurs. Cet ouvrage présente les différents outils et méthodes qui permettent la conception de robots mobiles. Ces systèmes généralement autonomes et supervisés par un opérateur humain sont capables de se déplacer dans un environnement plus ou moins connu. Illustré par des simulations et des exercices corrigés, La robotique mobiledécrit les principes essentiels de la modélisation des robots, développant les notions d'actionneur, de capteur, de régulateur et de guidage. Les outils permettant une simulation tridimensionnelle sont également traités ainsi que les bases théoriques d’une localisation fiable des robots dans leur environnement.

Download or read book Mobile Robots written by Janusz Bȩdkowski and published by BoD – Books on Demand. This book was released on 2011-12-02 with total page 406 pages. Available in PDF, EPUB and Kindle. Book excerpt: The objective of this book is to cover advances of mobile robotics and related technologies applied for multi robot systems' design and development. Design of control system is a complex issue, requiring the application of information technologies to link the robots into a single network. Human robot interface becomes a demanding task, especially when we try to use sophisticated methods for brain signal processing. Generated electrophysiological signals can be used to command different devices, such as cars, wheelchair or even video games. A number of developments in navigation and path planning, including parallel programming, can be observed. Cooperative path planning, formation control of multi robotic agents, communication and distance measurement between agents are shown. Training of the mobile robot operators is very difficult task also because of several factors related to different task execution. The presented improvement is related to environment model generation based on autonomous mobile robot observations.

Download or read book Mobile Robots written by Gerald Cook and published by John Wiley & Sons. This book was released on 2011-10-14 with total page 326 pages. Available in PDF, EPUB and Kindle. Book excerpt: An important feature of this book is the particular combination of topics included. These are (1) control, (2) navigation and (3) remote sensing, all with application to mobile robots. Much of the material is readily extended to any type ground vehicle. In the controls area, robot steering is the issue. Both linear and nonlinear models are treated. Various control schemes are utilized, and through these applications the reader is introduced to methods such as: (1) Linearization and use of linear control design methods for control about a reference trajectory, (2) Use of Lyapunov stability theory for nonlinear control design, (3) Derivation of optimal control strategies via Pontryagin’s maximum principle, (4) Derivation of a local coordinate system which is fundamental for the steering of vehicles along a path never before traversed. This local coordinate system has application regardless of the control design methods utilized. In the navigation area, various coordinate systems are introduced, and the transformations among them are derived. (1) The Global Positioning System (GPS) is introduced and described in significant detail. (2) Also introduced and discussed are inertial navigation systems (INS). These two methods are treated in terms of their ability to provide vehicle position as well as attitude. A preceding chapter is devoted to coordinate rotations and transformations since they play an important role in the understanding of this body of theory.

Download or read book Control of Multiple Robots Using Vision Sensors written by Miguel Aranda and published by Springer. This book was released on 2017-05-11 with total page 197 pages. Available in PDF, EPUB and Kindle. Book excerpt: This monograph introduces novel methods for the control and navigation of mobile robots using multiple-1-d-view models obtained from omni-directional cameras. This approach overcomes field-of-view and robustness limitations, simultaneously enhancing accuracy and simplifying application on real platforms. The authors also address coordinated motion tasks for multiple robots, exploring different system architectures, particularly the use of multiple aerial cameras in driving robot formations on the ground. Again, this has benefits of simplicity, scalability and flexibility. Coverage includes details of: a method for visual robot homing based on a memory of omni-directional images; a novel vision-based pose stabilization methodology for non-holonomic ground robots based on sinusoidal-varying control inputs; an algorithm to recover a generic motion between two 1-d views and which does not require a third view; a novel multi-robot setup where multiple camera-carrying unmanned aerial vehicles are used to observe and control a formation of ground mobile robots; and three coordinate-free methods for decentralized mobile robot formation stabilization. The performance of the different methods is evaluated both in simulation and experimentally with real robotic platforms and vision sensors. Control of Multiple Robots Using Vision Sensors will serve both academic researchers studying visual control of single and multiple robots and robotics engineers seeking to design control systems based on visual sensors.

Download or read book Robotic Mapping and Exploration written by Cyrill Stachniss and published by Springer Science & Business Media. This book was released on 2009-04-27 with total page 206 pages. Available in PDF, EPUB and Kindle. Book excerpt: "Robotic Mapping and Exploration" is an important contribution in the area of simultaneous localization and mapping (SLAM) for autonomous robots, which has been receiving a great deal of attention by the research community in the latest few years. The contents are focused on the autonomous mapping learning problem. Solutions include uncertainty-driven exploration, active loop closing, coordination of multiple robots, learning and incorporating background knowledge, and dealing with dynamic environments. Results are accompanied by a rich set of experiments, revealing a promising outlook toward the application to a wide range of mobile robots and field settings, such as search and rescue, transportation tasks, or automated vacuum cleaning.

Download or read book An Implementation of a Novel Localization Framework for Robots and Its Application to Multi robot Tasks written by Paul Mihai Maxim and published by ProQuest. This book was released on 2008 with total page 217 pages. Available in PDF, EPUB and Kindle. Book excerpt: In recent years, the trend in robotics is to replace single robot platforms with teams of robots that cooperate to achieve a common goal. The main reasons are the fact that single robots may break down leading to a complete failure of achieving a goal and that certain tasks, such as chemical plume tracing, distributed sensing grids, or map generation, are difficult, if not impossible, to be solved with only one robot. Replacing a single robot by a team of robots can lead to a system that is fully distributed, more robust, noise tolerant, and highly scalable. One of the bottlenecks in the development of successful collaborative robotics is an enabling localization technology that shares the design criteria of collaborative robots, as we mentioned above. Existing localization technologies rely either on global information provided by GPS, beacons, and landmarks or on complex local information provided by vision systems. Using global information limits the use of the localization to specific environments and it is more prone to errors. Vision-based localization systems require expensive hardware and their accuracy is limited both by distance and lighting conditions. To address the problems with previous technologies we propose a novel plug-in 2D localization hardware module for multi-robot localization, based on trilateration, which is fully distributed, inexpensive and scalable. In 2D trilateration, to locate a remote robot, the sensing robot must know the locations of three "base points" in its own coordinate system and be able to measure distances from these three points to the remote robot. Our distance measurement method exploits the fact that sound travels significantly slower than light, allowing us to employ a Difference in Time of Arrival technique. Let us assume that we have two robots that are both equipped with our localization module. Each localization module has one radio frequency (RF) transceiver and three ultrasonic acoustic transceivers, which are also the "base points". Suppose robot 2 (remote robot) simultaneously emits an RF pulse and an acoustic pulse. When robot 1 (sensing robot) receives the RF pulse (almost instantaneously), a clock on robot 1 starts. When the acoustic pulse is received by each of the three acoustic transceivers on robot 1, the elapsed times are computed and converted to distances. Robot 1 is now able to use trilateration to compute the location of robot 2. Similarly, robot 2 can localize robot 1 when robot 1 emits the RF and acoustic pulse. To test our localization hardware we have developed a robot platform which we called Maxelbot . The modular design of this platform allows for easy addition of hardware modules, as we present later in this thesis. Next, we demonstrate the performance of this technology with various empirical tests on moving and non-moving platforms, both in controlled indoor environments and outdoors. We further test our localization module by using it to monitor the performance of a novel algorithm for uniform coverage of a region. Surveillance and mine detection are some applications that would benefit from this algorithm. Prior work has claimed that this task is impossible to solve for non-convex regions (Gage 1993). Our algorithm enables robots to uniformly cover regions of all shapes, such that the robot movements are not predictable and the region periphery is not neglected. The algorithm assumes that robots are independent and is physics-based, relying on an analogy with mean free paths of particles. Validation of the algorithm is rigorously provided via simulation and Maxelbot experiments. Finally, we demonstrate how our localization technology allows us to tackle an important problem in cooperative robotics - the self-organizing of chain formations in unknown environments. This algorithm assumes that robots are dependent and is also physics-based, using a surprisingly simple and elegant modification to the standard Artificial Physics framework (Spears and Gordon 1999). Validation of this algorithm is also rigorously provided via simulation, with the addition of demonstrations on the Maxelbots . The main contributions of this research are (a) the design and development of a novel platform-independent trilateration approach to multi-robot localization, (b) the design and development of our Maxelbot robot platform to test our localization module, (c) an algorithm that allows robots to uniformly cover arbitrarily shaped regions, and (d) an algorithm that enables a team of robots to self-organize in chain formations and explore unknown environments.

Download or read book Environment Learning for Indoor Mobile Robots written by Juan Andrade Cetto and published by Springer. This book was released on 2006-07-07 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: This monograph covers theoretical aspects of simultaneous localization and map building for mobile robots. These include estimation stability, nonlinear models for the propagation of uncertainties, temporal landmark compatibility, as well as issues pertaining the coupling of control and SLAM. One of the most relevant topics covered in this monograph is the theoretical formalism of partial observability in SLAM.