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Dissertations / Theses on the topic 'Mobile robotics navigation'

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1

Tang, Yilun. "Robot navigation and localization in regular office environment /." View abstract or full-text, 2010. http://library.ust.hk/cgi/db/thesis.pl?CSED%202010%20TANG.

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2

Berg, Brian. "Navigation of a Mobile Robot with Obstacle Avoidance." Thesis, California State University, Long Beach, 2018. http://pqdtopen.proquest.com/#viewpdf?dispub=10977871.

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<p> Navigating a vehicle autonomously and safely in unknown surroundings to a desired destination is challenging due to lack of initial information about stationary and moving objects along the path. This thesis proposes a navigation system that avoids static and dynamic obstacles using weighted real-time sensor feedback. The effectiveness of the system is demonstrated by implementing it on a robot. A 16-beam solid-state LiDAR sensor is used to detect obstacles to control a differential drive mobile robot. The sensor measurements are weighted and integrated into the Pure Pursuit path following
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3

Perko, Eric Michael. "Precision Navigation for Indoor Mobile Robots." Case Western Reserve University School of Graduate Studies / OhioLINK, 2013. http://rave.ohiolink.edu/etdc/view?acc_num=case1345513785.

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4

Qiu, Jiancheng. "A layered control architecture for mobile robot navigation." Thesis, University of Bedfordshire, 1998. http://hdl.handle.net/10547/622047.

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This thesis addresses the problem of how to control an autonomous mobile robot navigation in indoor environments, in the face of sensor noise, imprecise information, uncertainty and limited response time. The thesis argues that the effective control of autonomous mobile robots can be achieved by organising low level and higher level control activities into a layered architecture. The low level reactive control allows the robot to respond to contingencies quickly. The higher level control allows the robot to make longer term decisions and arranges appropriate sequences for a task execution. The
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Amayo, Paul Omondi. "Biologically inspired goal directed navigation for mobile robots." Master's thesis, University of Cape Town, 2016. http://hdl.handle.net/11427/20512.

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This project involved an investigation into low-cost navigation of mobile robots with the aim of creating and adaptive navigation system inspired by behaviour seen in animals. The navigation module developed here would need to be able to successfully localise a robot and navigate it to a defined target. A critical literature review was carried out of current localisation and path-planning architectures and a bio-inspired approach using an Echo State Network and Liquid State Machine architecture was chosen as the base for the navigation modules. The navigation module implemented in this work is
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6

Pipe, Anthony Graham. "Reinforcement learning and knowledge transformation in mobile robotics." Thesis, University of the West of England, Bristol, 1997. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.364077.

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7

Ng, Matthew James. "Corridor Navigation for Monocular Vision Mobile Robots." DigitalCommons@CalPoly, 2018. https://digitalcommons.calpoly.edu/theses/1856.

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Monocular vision robots use a single camera to process information about its environment. By analyzing this scene, the robot can determine the best navigation direction. Many modern approaches to robot hallway navigation involve using a plethora of sensors to detect certain features in the environment. This can be laser range finders, inertial measurement units, motor encoders, and cameras. By combining all these sensors, there is unused data which could be useful for navigation. To draw back and develop a baseline approach, this thesis explores the reliability and capability of solely using a
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8

Miah, Md Suruz. "Autonomous mobile robot navigation using RFID technology." Thesis, University of Ottawa (Canada), 2007. http://hdl.handle.net/10393/27891.

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Navigation techniques are of a paramount importance in the field of mobile robotics. They are employed in many contexts in indoor and outdoor environments such as delivering payloads in a dynamic environment, building safety, security, building measurement, research, and driving on highways. Skilled navigation in mobile robotics usually requires solving two problems, determining the position of the robot, and selecting a motion control strategy. Moreover, when no prior knowledge of the environment is available, the problem becomes even more difficult, as the robot has to build a map of its sur
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9

Cosgun, Akansel. "Navigation behavior design and representations for a people aware mobile robot system." Diss., Georgia Institute of Technology, 2016. http://hdl.handle.net/1853/54944.

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There are millions of robots in operation around the world today, and almost all of them operate on factory floors in isolation from people. However, it is now becoming clear that robots can provide much more value assisting people in daily tasks in human environments. Perhaps the most fundamental capability for a mobile robot is navigating from one location to another. Advances in mapping and motion planning research in the past decades made indoor navigation a commodity for mobile robots. Yet, questions remain on how the robots should move around humans. This thesis advocates the use of sema
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10

Mouzakitis, Alexandros. "Hybrid control architecture for navigation of autonomous mobile robots." Thesis, University of South Wales, 2002. https://pure.southwales.ac.uk/en/studentthesis/hybrid-control-architecture-for-navigation-of-autonomous-mobile-robots(3b3f0e2d-42f9-4bdc-b55e-b5c4cbed937f).html.

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This thesis is concerned with the development, design and implementation of a novel hybrid multi-agent orientated control architecture for navigation of multiple autonomous mobile robots operating in an unknown and unstructured environment populated by static and/or dynamic obstacles. The proposed hybrid control architecture is modular and draws its design from competitive tasks architecture, production rules architecture, connectionist architecture, dynamic system architecture, multi-agent architecture and subsumption architecture. The reasoning of the control architecture is both deliberativ
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11

Ko, Wen-Shen. "A navigation strategy for mobile robots in a manufacturing environment." Thesis, King's College London (University of London), 1996. https://kclpure.kcl.ac.uk/portal/en/theses/a-navigation-strategy-for-mobile-robots-in-a-manufacturing-environment(f586b9b9-1f4d-4ec7-a395-15365c613b6b).html.

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12

Mills, Euclid Weatley. "Mobile robotic design : robotic colour and accelerometer sensor." Thesis, University of Bradford, 2010. http://hdl.handle.net/10454/4436.

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This thesis investigates the problem of sensors used with mobile robots. Firstly, a colour sensor is considered, for its ability to detect objects having the three primary colours Red, Green and Blue (RGB). Secondly, an accelerometer was investigated, from which velocity was derived from the raw data using numerical integration. The purpose of the design and development of the sensors was to use them for robotic navigation and collision avoidance. This report presents the results of experiments carried out on the colour sensor and the accelerometer. A discussion of the results and some conclus
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13

Corominas, Murtra Andreu. "Map-based localization for urban service mobile robotics." Doctoral thesis, Universitat Politècnica de Catalunya, 2011. http://hdl.handle.net/10803/41555.

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Mobile robotics research is currently interested on exporting autonomous navigation results achieved in indoor environments, to more challenging environments, such as, for instance, urban pedestrian areas. Developing mobile robots with autonomous navigation capabilities in such urban environments supposes a basic requirement for a upperlevel service set that could be provided to an users community. However, exporting indoor techniques to outdoor urban pedestrian scenarios is not evident due to the larger size of the environment, the dynamism of the scene due to pedestrians and other moving ob
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14

Ezequiel, Carlos Favis. "Real-Time Map Manipulation for Mobile Robot Navigation." Scholar Commons, 2013. http://scholarcommons.usf.edu/etd/4481.

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Mobile robots are gaining increased autonomy due to advances in sensor and computing technology. In their current form however, robots still lack algorithms for rapid perception of objects in a cluttered environment and can benefit from the assistance of a human operator. Further, fully autonomous systems will continue to be computationally expensive and costly for quite some time. Humans can visually assess objects and determine whether a certain path is traversable, but need not be involved in the low-level steering around any detected obstacles as is necessary in remote-controlled systems
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15

Northcutt, Brandon D. "Biologically Inspired Algorithms for Visual Navigation and Object Perception in Mobile Robotics." Diss., The University of Arizona, 2016. http://hdl.handle.net/10150/612074.

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There is a large gap between the visual capabilities of biological organisms and visual capabilities of autonomous robots. Even the most simple of flying insects is able to fly within complex environments, locate food, avoid obstacles and elude predators with seeming ease. This stands in stark contrast to even the most advanced of modern ground based or flying autonomous robots, which are only capable of autonomous navigation within simple environments and will fail spectacularly if the expected environment is modified even slightly. This dissertation provides a narrative of the author's gradu
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PRIMATESTA, STEFANO. "Autonomous Navigation for Mobile Robots in Crowded Environments." Doctoral thesis, Politecnico di Torino, 2019. http://hdl.handle.net/11583/2743231.

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17

Alam, Tauhidul. "A Dynamical System Approach for Resource-Constrained Mobile Robotics." FIU Digital Commons, 2018. https://digitalcommons.fiu.edu/etd/3825.

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The revolution of autonomous vehicles has led to the development of robots with abundant sensors, actuators with many degrees of freedom, high-performance computing capabilities, and high-speed communication devices. These robots use a large volume of information from sensors to solve diverse problems. However, this usually leads to a significant modeling burden as well as excessive cost and computational requirements. Furthermore, in some scenarios, sophisticated sensors may not work precisely, the real-time processing power of a robot may be inadequate, the communication among robots may be
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18

Althaus, Philipp. "Indoor Navigation for Mobile Robots : Control and Representations." Doctoral thesis, KTH, Numerical Analysis and Computer Science, NADA, 2003. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-3644.

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<p>This thesis deals with various aspects of indoor navigationfor mobile robots. For a system that moves around in ahousehold or office environment,two major problems must betackled. First, an appropriate control scheme has to bedesigned in order to navigate the platform. Second, the form ofrepresentations of the environment must be chosen.</p><p>Behaviour based approaches have become the dominantmethodologies for designing control schemes for robotnavigation. One of them is the dynamical systems approach,which is based on the mathematical theory of nonlineardynamics. It provides a sound theor
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19

Vidal, Calleja Teresa Alejandra. "Visual Navigation in Unknown Environments." Doctoral thesis, Universitat Politècnica de Catalunya, 2007. http://hdl.handle.net/10803/6197.

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Navigation in mobile robotics involves two tasks, keeping track of the robot's position and moving according to a control strategy. In addition, when no prior knowledge of the environment is available, the problem is even more difficult, as the robot has to build a map of its surroundings as it moves. These three problems ought to be solved in conjunction since they depend on each other. <br/>This thesis is about simultaneously controlling an autonomous vehicle, estimating its location and building the map of the environment. The main objective is to analyse the problem from a control theoreti
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Zaoui, Mohammed. "Robotique nomade pour la restauration des écosystèmes dégradés." Thesis, Versailles-St Quentin en Yvelines, 2015. http://www.theses.fr/2015VERS043V.

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La dégradation des terres dans le monde affecte directement plus d’un milliard d’hectares. Elle menace près de 35% des terres de la planète ainsi que les moyens de subsistance de deux milliards d’individus. Les estimations des pertes financières sont considérables chaque année. La dégradation des terres arides et semi-arides est une entrave au développement des pays concernés. Ce problème demeure insoluble et la communauté internationale organisée au sein de plusieurs instances n’ayant pas trouvé de solution pérenne, assiste impuissante à la progression du fléau malgré les efforts et expérimen
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Reis, Gregory M. "Augmented Terrain-Based Navigation to Enable Persistent Autonomy for Underwater Vehicles in GPS-Denied Environments." FIU Digital Commons, 2018. https://digitalcommons.fiu.edu/etd/3736.

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Aquatic robots, such as Autonomous Underwater Vehicles (AUVs), play a major role in the study of ocean processes that require long-term sampling efforts and commonly perform navigation via dead-reckoning using an accelerometer, a magnetometer, a compass, an IMU and a depth sensor for feedback. However, these instruments are subjected to large drift, leading to unbounded uncertainty in location. Moreover, the spatio-temporal dynamics of the ocean environment, coupled with limited communication capabilities, make navigation and localization difficult, especially in coastal regions where the majo
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22

Hecht, Steven A. "Driving by Speaking: Natural Language Control of Robotic Wheelchairs." Case Western Reserve University School of Graduate Studies / OhioLINK, 2013. http://rave.ohiolink.edu/etdc/view?acc_num=case1365158700.

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23

Khusheef, Ahmed S. "Investigation on the mobile robot navigation in an unknown environment." Thesis, Edith Cowan University, Research Online, Perth, Western Australia, 2013. https://ro.ecu.edu.au/theses/537.

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Mobile robots could be used to search, find, and relocate objects in many types of manufacturing operations and environments. In this scenario, the target objects might reside with equal probability at any location in the environment and, therefore, the robot must navigate and search the whole area autonomously, and be equipped with specific sensors to detect objects. Novel challenges exist in developing a control system, which helps a mobile robot achieve such tasks, including constructing enhanced systems for navigation, and vision-based object recognition. The latter is important for undert
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24

Kedrowski, Philip Redleaf. "Development and Implementation of a Self-Building Global Map for Autonomous Navigation." Thesis, Virginia Tech, 2001. http://hdl.handle.net/10919/31895.

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Students at Virginia Tech have been developing autonomous vehicles for the past five years. The purpose of these vehicles has been primarily for entry in the annual international Intelligent Ground Vehicle Competition (IGVC), however further applications for autonomous vehicles range from UneXploded Ordinance (UXO) detection and removal to planetary exploration. Recently, Virginia Tech developed a successful autonomous vehicle named Navigator. Navigator was developed primarily for entry in the IGVC, but also intended for use as a research platform. For navigation, Navigator uses a local ob
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25

Da, Silva Filho José Grimaldo. "Towards natural human-robot collaboration during collision avoidance." Thesis, Université Grenoble Alpes, 2020. http://www.theses.fr/2020GRALM003.

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Ces dernières années, la tendance des robots capables de partager des espaces domestiques ou de travail avec des personnes a connu une croissance importante. Du robot guide à l’aspirateur autonome, ces robots dits "de service" sont de plus en plus intégrés dans la vie quotidienne des profanes.Bien que les progrès des logiciels et du matériel aient permis un comportement plus intelligent et plus autonome des robots, la présence plus répandue des robots parmi les gens pose un nouvel ensemble de défis pour la communauté scientifique. Même si les gens ne sont pas que des obstacles ordinaires, les
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Gonullu, Muhammet Kasim. "Development Of A Mobile Robot Platform To Be Used In Mobile Robot Research." Master's thesis, METU, 2013. http://etd.lib.metu.edu.tr/upload/12615654/index.pdf.

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Robotics is an interdisciplinary subject and combines mechanical, computer and electrical engineering components together to solve different kinds of problems. In order to build robotic systems, these disciplines should be integrated. Therefore, mobile robots can be used as a tool in education for teaching engineering concepts. They can be employed to be used in undergraduate, graduate and doctorate research. Hands on experience on a mobile robot increase motivation of the students on the topic and give them precious practical knowledge. It also delivers students new skills like teamwork, prob
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Valle, Simoes Eduardo do. "Development of an embedded evolutionary controller to enable collision-free navigation of a population of autonomous mobile robots." Thesis, University of Kent, 2000. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.344144.

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28

Shah, Hamzei G. Hossein. "Decision tree learning for intelligent mobile robot navigation." Thesis, Loughborough University, 1998. https://dspace.lboro.ac.uk/2134/6968.

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The replication of human intelligence, learning and reasoning by means of computer algorithms is termed Artificial Intelligence (Al) and the interaction of such algorithms with the physical world can be achieved using robotics. The work described in this thesis investigates the applications of concept learning (an approach which takes its inspiration from biological motivations and from survival instincts in particular) to robot control and path planning. The methodology of concept learning has been applied using learning decision trees (DTs) which induce domain knowledge from a finite set of
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Casper, Adlerteg, and Sen Adem. "Navigation with variable point of reference for 3DOF differential drive mobile robot." Thesis, Mälardalens högskola, Akademin för innovation, design och teknik, 2021. http://urn.kb.se/resolve?urn=urn:nbn:se:mdh:diva-54574.

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In this thesis, a kinematic model for controlling an Omni-directional 3 DOF DDR with an external navigation point is presented. Two different dynamic models for investigating the resulting torque on the three active motors on the robot are also developed and validated. The focus of the thesis is on the design of kinematic and dynamic models in an ideal environment and the kinematic model in a high fidelity environment. The kinematic model uses inverse kinematics to translate the controlling motion reference from the external navigation point to the three active motors on the DDR. The thesis al
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Varadhan, Aishwarya. "Design of Control Algorithms for Automation of a Full Dimension Continuouis Haulage System." Thesis, Virginia Tech, 2000. http://hdl.handle.net/10919/10165.

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The main theme of this research will be to develop solutions to the widely known 3-part question in mobile robotics comprising of "Where am I" "Where should I be" and "How do I get there". This can be achieved by implementing automation algorithms. Automation algorithms or control algorithms are vital components of any autonomous vehicle. Design and development of both prototype and full-scale control algorithms for a Long-Airdox Full Dimension Continuous Haulage system will be the main focus. Automation is a highly complex task, which aims at achieving increased levels of equipment efficiency
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31

Lisurici, Fabio. "Development of a mobile robot: control and navigation for outdoor environments." Master's thesis, Alma Mater Studiorum - Università di Bologna, 2021.

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For mobile robots to be able to work safely among humans, they have to be accurate in their motion acquiring knowledge via sensors. Nowadays mobile robots are being used more and more in outdoor environment for many purposes. This thesis covers the essential aspects of a mobile robot combining perception, state estimation and control for outdoor navigation. The first part involves an overview of the concepts related to kinematics, optimization and real time systems. Those topics give the basis to understand the following chapters in which more advanced topics are covered. The second part co
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32

Cadenat, Viviane. "Contribution à la navigation d'un robot mobile par commande référencée multi-capteurs." Habilitation à diriger des recherches, Université Paul Sabatier - Toulouse III, 2011. http://tel.archives-ouvertes.fr/tel-00678488.

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Dans ce manuscrit, nous nous intéressons au problème de la navigation d'un robot mobile par commande référencée multi-capteurs. Notre objectif est d'effectuer des tâches de navigation guidées par la vision dans des environnements d'intérieur structurés peu connus, possiblement évolutifs et où l'homme peut être présent. Les missions considérées pourront inclure de longs déplacements et consisteront à positionner le robot vis-à-vis d'un amer ou d'une personne d'intérêt. Leur position dans la scène étant inconnue, ils seront repérés par la vision. Afin de pouvoir réaliser de telles missions, diff
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Troiani, Chiara. "Vision-Aided Inertial Navigation : low computational complexity algorithms with applications to Micro Aerial Vehicles." Thesis, Grenoble, 2014. http://www.theses.fr/2014GRENM021/document.

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L'estimation précise du mouvement 3D d'une caméra relativement à une scène rigideest essentielle pour tous les systèmes de navigation visuels. Aujourd'hui différentstypes de capteurs sont adoptés pour se localiser et naviguer dans des environnementsinconnus : GPS, capteurs de distance, caméras, capteurs magnétiques, centralesinertielles (IMU, Inertial Measurement Unit). Afin d'avoir une estimation robuste, lesmesures de plusieurs capteurs sont fusionnées. Même si le progrès technologiquepermet d'avoir des capteurs de plus en plus précis, et si la communauté de robotiquemobile développe algorit
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Dincay, Berkan. "GPS/Optical Encoder Based Navigation Methods for dsPIC Microcontroled Mobile Vehicle." Thesis, Halmstad University, Halmstad Embedded and Intelligent Systems Research (EIS), 2010. http://urn.kb.se/resolve?urn=urn:nbn:se:hh:diva-4420.

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<p>Optical encoders are being widely suggested for precise mobile navigation. Combining such sensor information with Global Positioning System (GPS) is a practical solution for reducing the accumulated errors from encoders and moving the navigational base into global coordinates with high accuracy.</p><p>This thesis presents integration methods of GPS and optical encoders for a mobile vehicle that is controlled by microcontroller. The system analyzed includes a commercial GPS receiver, dsPIC microcontroller and mobile vehicle with optical encoders. Extended kalman filtering (EKF), real time cu
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Peynot, Thierry. "Selection et controle de modes de deplacement pour un robot mobile autonome en environnements naturels." Thesis, Institut National Polytechnique de Toulouse, 2006. http://ethesis.inp-toulouse.fr/archive/00000395/.

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Autonomous navigation and locomotion of a mobile robot in natural environments remain a rather open issue. Several functionalities are required to complete the usual perception/decision/action cycle. They can be divided in two main categories : navigation (perception and decision about the movement) and locomotion (movement execution). In order to be able to face the large range of possible situations in natural environments, it is essential to make use of various kinds of complementary functionalities, defining various navigation and locomotion modes. Indeed, a number of navigation and locomo
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Mudgal, Apurva. "Worst-case robot navigation in deterministic environments." Diss., Georgia Institute of Technology, 2009. http://hdl.handle.net/1853/33924.

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We design and analyze algorithms for the following two robot navigation problems: 1. TARGET SEARCH. Given a robot located at a point s in the plane, how will a robot navigate to a goal t in the presence of unknown obstacles ? 2. LOCALIZATION. A robot is "lost" in an environment with a map of its surroundings. How will it find its true location by traveling the minimum distance ? Since efficient algorithms for these two problems will make a robot completely autonomous, they have held the interest of both robotics and computer science communities. Previous work has focussed mainly on desig
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Sofman, Boris. "Online Learning Techniques for Improving Robot Navigation in Unfamiliar Domains." Research Showcase @ CMU, 2010. http://repository.cmu.edu/dissertations/43.

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Many mobile robot applications require robots to act safely and intelligently in complex unfamiliarenvironments with little structure and limited or unavailable human supervision. As arobot is forced to operate in an environment that it was not engineered or trained for, various aspectsof its performance will inevitably degrade. Roboticists equip robots with powerful sensorsand data sources to deal with uncertainty, only to discover that the robots are able to make onlyminimal use of this data and still find themselves in trouble. Similarly, roboticists develop andtrain their robots in represe
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Batista, Ãtalo JÃder Loiola. "Modelo de navegaÃÃo para robÃs mÃveis baseado em redes de petri coloridas." Universidade Federal do CearÃ, 2008. http://www.teses.ufc.br/tde_busca/arquivo.php?codArquivo=2366.

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FundaÃÃo Cearense de Apoio ao Desenvolvimento Cientifico e TecnolÃgico<br>Sistemas de navegaÃÃo autÃnomos devem ser capazes de definir uma seqÃÃncia de aÃÃes a serem tomadas por robÃs mÃveis, dotados de um conjunto limitado de sensores, quando expostos a um ambiente externo suposto desconhecido e tendo que atender simultaneamente a um elenco de objetivos previamente especificados. O interesse cientÃfico no estudo de sistemas de navegaÃÃo em ambientes desconhecidos e sujeitos ao atendimento de mÃltiplos objetivos à motivado basicamente pelo seu evidente potencial em aplicaÃÃes industriais e pel
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Filliat, David. "Cartographie et estimation globale de la position pour un robot mobile autonome." Phd thesis, Université Pierre et Marie Curie - Paris VI, 2001. http://tel.archives-ouvertes.fr/tel-00655469.

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La gestion des déplacements dans l'espace pour un robot mobile autonome est un problème qui a été abordé dès les premiers essais d'intégration de l'intelligence artificielle et de la robotique, mais qui reste difficile et auquel peu de solutions générales ont été apportées. Parmi toutes les stratégies de navigation existantes, nous nous intéressons à celles qui utilisent une carte représentant la structure spatiale de l'environnement et qui permettent de planifi er les déplacements jusqu'à un but lointain. La construction d'une carte et l'estimation de la position du robot sont deux sous-probl
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Muhammad, Naveed. "Contributions à l'exploitation de lidar 3D pour la navigation autonome : calibrage et localisation qualitative." Phd thesis, INSA de Toulouse, 2012. http://tel.archives-ouvertes.fr/tel-00676797.

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Afin de permettre une navigation autonome d'un robot dans un environnement, le robot doit être capable de percevoir son environnement. Dans la littérature, d'une manière générale, les robots perçoivent leur environnement en utilisant des capteurs de type sonars, cameras et lidar 2D. L'introduction de nouveaux capteurs, nommés lidar 3D, tels que le Velodyne HDL-64E S2, a permis aux robots d'acquérir plus rapidement des données 3D à partir de leur environnement. La première partie de cette thèse présente une technique pour la calibrage des capteurs lidar 3D. La technique est basée sur la compara
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41

Jin, Zhe Kun. "Système multi-agents appliqué à la navigation d'un robot mobile dans un environnement inconnu." Cachan, Ecole normale supérieure, 1997. http://www.theses.fr/1997DENS0008.

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Cette thèse présente une étude sur la navigation d'un robot mobile dans un environnement inconnu. Nous avons débuté ce travail par un état de l'art. Par l'analyse des architectures de commande, notre choix s'est porte sur l'architecture de commande réactive base sur un système multi-agents en raison de sa flexibilité et des diverses possibilités d'évolution. Nous avons place ce travail dans le projet de robot mobile Amara (architecture multi-agents pour un robot autonome), le système de commande multi-agents est lui-même un agent de navigation dans l'ensemble du système de commande Amara. Dans
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Vávra, Patrik. "Využití nástroje ROS pro řízení autonomního mobilního robotu." Master's thesis, Vysoké učení technické v Brně. Fakulta strojního inženýrství, 2019. http://www.nusl.cz/ntk/nusl-402584.

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Tato práce se zabývá vytvořením lokalizačního a navigačního systému mobilního robota pro vnitřní prostředí pomocí frameworku ROS. Stručně je zde představen projekt, v rámci kterého diplomová práce vznikla, a jeho cíle. V rešeršní části je v krátkosti popsán ROS framework, simulační prostředí Gazebo a senzory, kterými robot disponuje. Následuje vytvoření modelu robota a simulačního prostředí, v němž jsou vyzkoušeny lokalizační, navigační a další rutiny. V experimentální části je provedeno testování senzorů a popsáno využití jejich výstupů. Následně jsou upraveny a otestovány algoritmy ze simula
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43

Blum, Christian. "Self-organization in networks of mobile sensor nodes." Doctoral thesis, Humboldt-Universität zu Berlin, Mathematisch-Naturwissenschaftliche Fakultät, 2015. http://dx.doi.org/10.18452/17383.

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Selbstorganisierte drahtlose (ad hoc) Multihopnetzwerke können als einfach einsetzbare, robuste und rekonfigurierbare Kommunikationsinfrastruktur zum Beispiel in Katastrophenszenarien eingesetzt werden. Solche drahtlosen Netzwerke nutzen die Luft als geteiltes Kommunikationsmedium, was bedeutet, dass die Parameter des Netzwerks sehr orts- und zeitveränderlich sowie verrauscht sind. Intelligente Roboter können als Netzwerkknoten diese Herausforderungen bewältigen, indem sie sensomotorische Interaktion ausnutzen. Für einzelne Roboter wurde ein Algorithmus zur Exploration unbekannter Netzwerke
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44

Hughes, Bradley Evan. "A Navigation Subsystem for an Autonomous Robot Lawn Mower." Case Western Reserve University School of Graduate Studies / OhioLINK, 2011. http://rave.ohiolink.edu/etdc/view?acc_num=case1312391797.

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45

Devillard, François. "Vision du robot mobile Mithra." Grenoble INPG, 1993. http://www.theses.fr/1993INPG0112.

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Nous proposons un ensemble de vision stereoscopique embarque, destine a la navigation d'un robot mobile en site industriel. En robotique mobile, les systemes de vision sont soumis a de severes contraintes de fonctionnement (traitement en temps reel, volume, consommation. . . ). Pour une modelisation 3D de l'environnement, le systeme de vision doit utiliser des indices visuels permettant un codage compact, precis et robuste de la scene observee. Afin de repondre au mieux aux contraintes de vitesse, nous nous sommes attaches a extraire, des images, les informations les plus significatives d'un p
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46

Lien, Torgrim Aalvik. "Mobile Robotics in Precision Agriculture : A CAN bus interface implementation of differential drive and exploration of localization, pose estimation and autonomous navigation." Thesis, Norges teknisk-naturvitenskapelige universitet, Institutt for teknisk kybernetikk, 2013. http://urn.kb.se/resolve?urn=urn:nbn:no:ntnu:diva-23057.

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A complete setup of sensors, estimators and controllers for autonomous and manual control of an unmanned dierential steered ground vehicle has been implemented in this paper. The entire system is implemented in Robot Operative System (ROS) using the open source ROS software platform FroboMind as a foundation. The system is running on a Ubuntu 12.10 laptop, with the Groovy distribution of ROS.A reliable CANopen communication for real-time control and monitoring of the motors over a single CAN bus have been deployed, with security measures for handling loss of connection between the motor contro
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47

Yazbeck, Jano. "Accrochage immatériel sûr et précis de véhicules automatiques." Electronic Thesis or Diss., Université de Lorraine, 2014. http://www.theses.fr/2014LORR0070.

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Dans cette thèse, nous nous intéressons au problème du suivi en convoi, désigné en anglais par le terme platooning, où un train de robots essaie de suivre un chemin décrit par le leader. Ce chemin, n'étant pas prédéfini mais généré au cours du suivi, est inconnu de tous les robots suiveurs. Dans ce travail, nous choisissons une approche décentralisée locale où chaque robot du convoi observe son voisinage et calcule son contrôle de façon à avoir un suivi stable (absence d'oscillations) et précis (erreur latérale aussi faible que possible). Cette thèse étudie plus précisément le comportement lat
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48

Roggeman, Hélène. "Amélioration de performance de la navigation basée vision pour la robotique autonome : une approche par couplage vision/commande." Thesis, Université Paris-Saclay (ComUE), 2017. http://www.theses.fr/2017SACLS497/document.

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L'objectif de cette thèse est de réaliser des missions diverses de navigation autonome en environnement intérieur et encombré avec des robots terrestres. La perception de l'environnement est assurée par un banc stéréo embarqué sur le robot et permet entre autres de calculer la localisation de l'engin grâce à un algorithme d'odométrie visuelle. Mais quand la qualité de la scène perçue par les caméras est faible, la localisation visuelle ne peut pas être calculée de façon précise. Deux solutions sont proposées pour remédier à ce problème. La première solution est l'utilisation d'une méthode de f
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49

Le, Flécher Emile. "Coordination des mouvements d'un système mobile bi-bras pour la réalisation de tâches complexes de navigation et de manipulation dans un environnement fortement dynamique." Thesis, Toulouse 3, 2020. http://www.theses.fr/2020TOU30006.

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Cette thèse explore le développement de solutions innovantes pour automatiser les tâches de navigation et de manipulation dans le contexte agricole et plus particulièrement dans les vergers. Les tâches concernées varient de l'analyse au traitement ou encore au ramassage de fruits. Cet environnement introduit de nombreuses contraintes. D'abord, le robot naviguant entre des rangées d'arbres, ne peut se localiser précisément via un signal GNSS du fait de la canopée. La navigation reposera donc sur des mesures effectuées par des capteurs embarqués tels que des encodeurs, des caméras ou des scanner
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50

Ghazouani, Haythem. "Navigation visuelle de robots mobiles dans un environnement d'intérieur." Phd thesis, Université Montpellier II - Sciences et Techniques du Languedoc, 2012. http://tel.archives-ouvertes.fr/tel-00932829.

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Les travaux présentés dans cette thèse concernent le thème des fonctionnalités visuelles qu'il convient d'embarquer sur un robot mobile, afin qu'il puisse se déplacer dans son environnement. Plus précisément, ils ont trait aux méthodes de perception par vision stéréoscopique dense, de modélisation de l'environnement par grille d'occupation, et de suivi visuel d'objets, pour la navigation autonome d'un robot mobile dans un environnement d'intérieur. Il nous semble important que les méthodes de perception visuelle soient à la fois robustes et rapide. Alors que dans les travaux réalisés, on trouv
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