Dissertations / Theses on the topic 'Robots mobiles. Robots autonomes'
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Vu, Minh Tuan. "Communication visuelle par signalement lumineux avec un robot mobile." Thesis, National Library of Canada = Bibliothèque nationale du Canada, 2000. http://www.collectionscanada.ca/obj/s4/f2/dsk1/tape4/PQDD_0030/MQ67417.pdf.
Full textLétourneau, Dominic. "Interprétation visuelle de symboles par un robot mobile." Sherbrooke : Université de Sherbrooke, 2002.
Find full textAlami, Rachid. "Robots autonomes : du concept au robot. Architectures, représentations et algorithmes." Habilitation à diriger des recherches, Université Paul Sabatier - Toulouse III, 1996. http://tel.archives-ouvertes.fr/tel-00165562.
Full textFABIANI, LIONEL. "Une methodologie statistique pour l'evaluation de robots mobiles autonomes." Paris 6, 2000. http://www.theses.fr/2000PA066505.
Full textAhle, Elmar. "Autonomous systems : a cognitive oriented approach applied to mobile robotics /." Aachen : Shaker, 2007. http://catalogue.bnf.fr/ark:/12148/cb41447189p.
Full textMourioux, Gilles. "Proposition d'une architecture multifonctions pour l'autonomie globale des robots." Orléans, 2006. http://www.theses.fr/2006ORLE2022.
Full textDE, MEDEIROS Adelardo A. D. "Contrôle d'exécution pour robots mobiles autonomes: architecture, spécification et validation." Phd thesis, Université Paul Sabatier - Toulouse III, 1997. http://tel.archives-ouvertes.fr/tel-00010029.
Full textMedeiros, Adelardo Adelino Dantas de. "Contrôle d'exécution pour robots mobiles autonomes : architecture, spécification et validation." Toulouse 3, 1997. http://www.theses.fr/1997TOU30027.
Full textCourbon, Jonathan. "Navigation de Robots Mobiles par Mémoire Sensorielle." Phd thesis, Université Blaise Pascal - Clermont-Ferrand II, 2009. http://tel.archives-ouvertes.fr/tel-00664837.
Full textMansard, Nicolas Chaumette François. "Enchaînement de tâches robotiques." [S.l.] : [s.n.], 2006. ftp://ftp.irisa.fr/techreports/theses/2006/mansard.pdf.
Full textLampe, Alexandre Chatila Raja. "Méthodologie d'évaluation du degré d'autonomie d'un robot mobile terrestre." Toulouse : INP Toulouse, 2007. http://ethesis.inp-toulouse.fr/archive/00000468.
Full textPelle, Robin. "Contribution à la modélisation formelle d'essaims de robots mobiles." Electronic Thesis or Diss., université Paris-Saclay, 2020. http://www.theses.fr/2020UPASG062.
Full textDistributed Algorithm is among domains where informal reasoning is not an option, especially when Byzantine errors may occur. It is also characterized by a large variety of models whose subtle modulations imply radically different properties.We are interested in "robotic network": clouds of autonomous entities performing a cooperative task. The applications that these swarms of agents offer are extremely promising: exploration and search for survivors in devasted areas, patrols and drone flights in formation, etc. These few potentially critical exemples underline the high dynamicity of the model; they also indicate how failures of robots or errors in the distributed protocols that equip them can have distastrous consequences.To ensure the safety of the protocols and the security of tasks, we aim to optain, with the help of the Coq proof assistant, foraml mechanical validations of properties of certain distributed protocols. A prototype of Coq's formal model for robot network, Pactole, has recently shown the feasibility of an proof assistant verification in this framework. It captures quite naturally many variants of these networks, especially with regard to topology or the properties of demons. This model is of course in the higher order, and is based on coinductive types. It makes it possible to demonstrate in Coq both positive roperties: the embedded program makes it possible to carry out the task regardless of the initial configuration, as negative properties: there is no embedded program to complete the task.In the emerging framework of robot networks, the models are distinguished by the characteristics and capabilities of the robots, the topology of the space in which they evolve, the degree of synchronism (modelled by the properties of the activation demon), the error that can occure, etc. The prototype Pactole expresses only some of these variants. Thought in a theoretical framework (point robots, instantaneous movement, etc.), hypotheses remain out of reach, in particular realistic hypothesis such as totally asynchronous executions, or risk of collision. The absence of collision is fundamental in all applications relates to formation flights (drones) and critical safety condition as soon as one is interested in air transport. Formal validation of this property is therefore of great importance.The work consits of extending the formal model to take into account asynchronous evolutions of large robots. This modelling should allow easy formulation of protocols and the task they are supposed to perform. Particular attention will be given to ensuring the absence of collisions during potentially complex movements
Mondada, Francesco. "Conception de structures neuronales pour le contrôle de robots mobiles autonomes /." [S.l.] : [s.n.], 1997. http://library.epfl.ch/theses/?nr=1598.
Full textQUTUB, SAMER. "Un paradigme generique pour la navigation cooperative de robots mobiles autonomes." Toulouse 3, 1998. http://www.theses.fr/1998TOU30230.
Full textBrassart, Éric. "Localisation absolue d'un robot mobile autonome par des balises actives et un système de vision monoculaire." Compiègne, 1995. http://www.theses.fr/1995COMPD777.
Full textThis work proposes an original method to localize an autonomous mobile robot inside building. The developed technic is based on conjoint utilization of actives beacons with a monocular vision system which permit us to recover two data type : - identifient code perform a beacon, - the singular point feature a beacon in a picture. With these two informations, casing a triangulation method, we localize the mobile robot in it evolution area. Parallel to this work, we study the error localization making function the different component feature measure fine. Equipment and method used for the experimentation were restrained by industriel objectif application
Ben, Said Hela. "Navigation autonome et commande référencée capteurs de robots d'assistance à la personne." Thesis, Limoges, 2018. http://www.theses.fr/2018LIMO0016/document.
Full textThe autonomy of a mobile agent is defined by its ability to navigate in an environment without human intervention. This task is very required for personal assistance robots. That’s why our contribution has been particularly focused on instrumentation and increasing the autonomy of a wheelchair for reduced mobility peaple. The objective of this work is to design control laws that allow a robot to navigate in real time and independently in an unknown environment. A unified virtual perception framework is introduced and allows to project the navigable space obtained by possibly multiple observations. First we designed an autonomous and safe navigation approach in environment whose structure can be assimilated to a corridor (lines on the ground, walls, delimitation of grasses, roads ...). We have solved this problem by using the formalism of visual servoing. The visual characteristics used in the control law were constructed from the virtual representation (ie the position of the vanishing point and the orientation of the center line of the corridor). To ensure safe and smooth navigation, even when these parameters can not be extracted, we have designed a finite-time state observer to estimate the visual characteristics in order to maintain the robot’s control efficient. This approach let a mobile robot navigate in a corridor even in in the case of sensory failure (unreliable data) and/or loss of measurement. We have extended the first contribution of this work with dealing with any type of static or dynamic environment. This was done using the Voronoi diagram. The Generalized Voronoi Diagram (GVD), also named skeleton, is a powerful environment representation, since, among other reasons, it defines a set of paths at maximal distance from the obstacles. In this work, a real time skeleton based visual servoing approach is proposed for a safe autonomous navigation of mobile robots. The control is based on an approximation of the local GVD using the Delta Medial Axis, a fast and robust skeletonization algorithm. The latter produces a filtered skeleton of the free space surrounding the robot using a pruning parameter that takes into account the robot size. This approach can cope with measurement noises at the perception and control with the wheel slip. This is why we have designed a visual servoing approach on a prediction of a GVD linearization. A complete analysis was performed to show the stability of the proposed control laws. Simulations and experimental tests validate the proposed approach
Mansard, Nicolas. "Enchaînement de tâches robotiques." Rennes 1, 2006. http://www.theses.fr/2006REN1S097.
Full textDeremetz, Mathieu. "Contribution à la modélisation et à la commande de robots mobiles autonomes et adaptables en milieux naturels." Thesis, Université Clermont Auvergne (2017-2020), 2018. http://www.theses.fr/2018CLFAC079/document.
Full textThis work is focused on the conceptualization, the modeling and the genericcontrol of mobile robots when moving in off-road contexts and facing slipperyterrains, especially for very accurate tracking and following applications. Thisthesis summarizes the proposed methods and the obtained results to addressthis research issue, first for path following applications (absolute localization)and then for edge and target tracking applications (relative localization). A finalsection of this thesis introduces an adaptive robotic concept and its associatedcontroller allowing the adaptation of the pose (position and orientation) of thechassis with respect to the environment topography.For each application, this thesis introduces a panel of innovative control algorithmsfor controlling skid-steering, two-wheel steering and four-wheel steeringmobile robots. Each algorithm of the panel is described, in this thesis, infour steps : modeling, estimation, control and experiments.The first main contribution of this thesis deals with the slippage estimation.The latter is adaptive and model-based. It also includes the extended kinematicmodeling only or together with the dynamic modeling of the mobile robot toensure a robust estimation of the slippage whatever the speed of the robot, encountereddynamic phenomena or even ground characteristics.The second main contribution deals with the design of a generic control approachfor mobile robots when path following and target tracking. The proposedstrategy is mostly based on a backstepping method and is illustrated inthis thesis via a panel of control laws. When combining this proposed controlapproach with the slippage estimation described above, significant improvedtracking and following performances are obtained (in term of stability, repeatability,accuracy and robustness) whatever the encountered context.All algorithms have been tested and validated through simulations and/orfull-scale experiments, indoor and off-road, with different mobile robots
Martin-Guillerez, Damien Banâtre Michel. "Mécanismes de prise de points de reprise opportunistes pour robots mobiles autonomes." Rennes : [s.n.], 2009. ftp://ftp.irisa.fr/techreports/theses/2009/martin-guillerez.pdf.
Full textMartin-Guillerez, Damien. "Mécanismes de prise de points de reprise opportunistes pour robots mobiles autonomes." Rennes 1, 2009. ftp://ftp.irisa.fr/techreports/theses/2009/martin-guillerez.pdf.
Full textFailures of mobile computing devices can lead to severe data loss. Collaborative robotic systems, designed to work in total autonomy, are sensitive to these failures. Usual methods relying on remote backup can no longer be used in a context of high mobility. Short-range communication media can be used to overcome data failure through opportunistic communications for data backup. When two devices enter their respective communication range, they can initiate an ephemeral data exchange. To overcome the lack of global network coverage in those system, we propose a backup system based on opportunistic communications to reduce the costs induced by failures inside a swarm of autonomous mobile robots
MOGA, SORIN DANIEL. "Apprendre par imitation : une nouvelle voie d'apprentissage pour les robots autonomes." Cergy-Pontoise, 2000. http://www.theses.fr/2000CERG0111.
Full textMorette, Nicolas. "Contribution à la navigation de robots mobiles : approche par modèle direct et commande prédictive." Phd thesis, Université d'Orléans, 2009. http://tel.archives-ouvertes.fr/tel-00517376.
Full textLefebvre, Olivier Lamiraux Florent. "Navigation autonome sans collision pour robots mobiles nonholonomes." Toulouse : INP Toulouse, 2006. http://ethesis.inp-toulouse.fr/archive/00000351.
Full textManaoui, Francis Olivier. "Etude et simulation d'algorithmes de navigation pour robots mobiles autonomes sur terrain inégal." Grenoble 2 : ANRT, 1988. http://catalogue.bnf.fr/ark:/12148/cb37615664p.
Full textManaoui, Francis Olivier. "Étude et simulation d'algorithmes de navigation pour robots mobiles autonomes sur terrain inégal." Montpellier 2, 1988. http://www.theses.fr/1988MON20242.
Full textGomez, Adrien. "Concevoir et animer pour l'acceptation de robots zoomorphiques." Thesis, Toulouse 2, 2018. http://dante.univ-tlse2.fr/id/eprint/9295.
Full textThe robot is a figure that is regularly found in fiction, on different media. Very often it is associated with the myth of Frankenstein, the creature that rebels against its creator and threatens humanity. This fear has gradually taken root in the collective unconscious, even if it seems irrational when we observe real robots and their applications. Because these machines have also been developed outside fiction. Not necessarily in the same form or for the same purposes. But the appearance of these artificial beings also generates fears. This is why a branch of research has been developed under the name acceptance.The acceptance of robots is one of the major goals in the development of this technology within our society. The development of different service robots, or co-worker robots, is increasing. The interaction and sharing of social space with robots continues to increase. This is why it is important to find ways to integrate these machines as well as possible. Because there are social, economic, and scientific issues behind them. One of the pathes that has been developed is the use of animations techniques. We extend this track here to apply it to the acceptance of zoomorphic robots. A category of robot little studied so far. Our study was devoted to a particular case, a hexapod robot, named R.HEX, developed at the Laboratory of Computer Science, Robotics and Microelectronics of Montpellier.To develop our research, we set up a survey using virtual reality. A new way of expression that also required the learning of new staging and narrative codes, in order to best reproduce a credible experience. This experience allowed us to compare animation movements and movements calculated by simulator, in order to determine how to better use animation tools
Revel, Arnaud. "Contrôle d'un robot autonome par approche neuro-mimétique." Cergy-Pontoise, 1997. http://biblioweb.u-cergy.fr/theses/97CERG0034.pdf.
Full textKhoumsi, Ahmed. "Pilotage, asservissement sensoriel et localisation d'un robot mobile autonome." Grenoble 2 : ANRT, 1988. http://catalogue.bnf.fr/ark:/12148/cb37614695q.
Full textLarge, Fréderic Laugier Christian. "Navigation autonome d'un robot mobile en environnement dynamique et incertain." [S.l.] : [s.n.], 2003. http://emotion.inrialpes.fr/bibemotion/2003/Lar03/large-these-fr-03.pdf.
Full textLarge, Fréderic. "Navigation autonome d'un robot mobile en environnement dynamique et incertain." Chambéry, 2003. https://tel.archives-ouvertes.fr/tel-00147376.
Full textThis thesis proposes two methods of navigation that allows a robot to move at high speeds in a partially unknown environment amidst moving obstacles. Both methods are based on a novel formalism inspired by the v-obstacle concept, allowing a fast estimation of the risk of collision associated with any feasible movement of the robot. The first method makes the robot react faster by computing only its next move. It is more suitable for fast changing environments, but may cause the robot to be blocked. The second method aims to build a complete trajectory to the goal. It can be suspended at any time in order to return an intermediate result and takes into account changes in the environment. The computed trajectories remain coherent between two successive decisions of the robot, they stay away from unpredictable obstacles and limit the cases that prevent the robot from reaching its goal. Our approach is compared to other existing methods. Its use in practical applications is shown in simulation. Several adaptations of our methods for implementation on real robots are presented. One of these adaptations leads to improved motion execution with artificial neural networks. Experimental results are given and analysed
Xia, Chen. "Apprentissage Intelligent des Robots Mobiles dans la Navigation Autonome." Thesis, Ecole centrale de Lille, 2015. http://www.theses.fr/2015ECLI0026/document.
Full textModern robots are designed for assisting or replacing human beings to perform complicated planning and control operations, and the capability of autonomous navigation in a dynamic environment is an essential requirement for mobile robots. In order to alleviate the tedious task of manually programming a robot, this dissertation contributes to the design of intelligent robot control to endow mobile robots with a learning ability in autonomous navigation tasks. First, we consider the robot learning from expert demonstrations. A neural network framework is proposed as the inference mechanism to learn a policy offline from the dataset extracted from experts. Then we are interested in the robot self-learning ability without expert demonstrations. We apply reinforcement learning techniques to acquire and optimize a control strategy during the interaction process between the learning robot and the unknown environment. A neural network is also incorporated to allow a fast generalization, and it helps the learning to converge in a number of episodes that is greatly smaller than the traditional methods. Finally, we study the robot learning of the potential rewards underneath the states from optimal or suboptimal expert demonstrations. We propose an algorithm based on inverse reinforcement learning. A nonlinear policy representation is designed and the max-margin method is applied to refine the rewards and generate an optimal control policy. The three proposed methods have been successfully implemented on the autonomous navigation tasks for mobile robots in unknown and dynamic environments
Lefebvre, Olivier. "Navigation autonome sans collision pour robots mobiles nonholonomes." Phd thesis, Institut National Polytechnique de Toulouse - INPT, 2006. http://tel.archives-ouvertes.fr/tel-00134581.
Full textSert, Hugues. "De l’utilisation de l’algèbre différentielle pour la localisation et la navigation de robots mobiles autonomes." Thesis, Ecole centrale de Lille, 2013. http://www.theses.fr/2013ECLI0002/document.
Full textThis work investigates the contribution of differential algebra to two main issues of wheel mobile robotics, localization and navigation. The first issue is to be able to tell where the robot is in its environment. We assume that we have a number of landmarks in space whose coordinates are known in this area. Depending on the number of landmarks, it is possible or not to localize the robot. This notion of localizability is defined and studied in the algebraic framework. We show that this framework is more interesting than the geometric framework in the sense that it not only allows the study of localizability, but it also allows us to construct estimators states to reconstruct the posture of the robot. This study was conducted in five cases study for four of the five classes of wheeled mobile robots. The second problem studied is that of a robot decentralized swarm navigation in a complex environment. This work presents an architecture that can be used in a wide class of problems and enjoying the benefits of discrete approaches and continuous approaches. Indeed, high-level block strategy specifies the goal, constraints and parameters as well as the cost function, a low-level block is used to compute a trajectory that minimize the cost function in accordance with the objective and the problem constraints. This minimization is done on a sliding window so it is possible to take changes in the environment or mission during navigation into account
Bourdon, Gérard. "Strategie reactive d'accostage entre robots mobiles autonomes en milieu contraint. Approche par techniques floues." Paris 6, 1996. http://www.theses.fr/1996PA066491.
Full textJaïem, Lotfi. "Contribution à l'autonomie des robots : vers la garantie de performance en robotique mobile autonome par la gestion des ressources matérielles et logicielles." Thesis, Montpellier, 2016. http://www.theses.fr/2016MONTT338/document.
Full textThe performance is a multi-form concept widely defined in manufacturing robotics with specific environment conditions (static and perfectly known) and infinite energy).However, performance indicators proposed in mobile robotics are less widely accepted.We differenciate between main performance axes (energy, safety, localization and stability) and secondary performance axes (duration for example).In our work, we are interested on missions realized under duration, safety and energy performance constraints, in a known but dynamic environment.Applying the different constraints decomposes the mission into a sequence of activities realized under invariant constraints.Each one, can be realized by a set of robotic tasks (move, be located, analyze an image, etc.).These tasks can be implemented in various ways according to the different possibles actuators, sensors and algorithms configurations.The adressed problem is the following: how to choose the hardware and software resources to use along a mission while satisfying the different performance constraints ? It is a multicriteria knapsack problem known to be NP-hard, where the complexity becomes very quickly unexplorable.To propose and guarantee an applicable solution under real-time constraints, we used an algorithm allowing to find a set of good solutions in few iterations.The proposed resources management approach is implemented on a Pioneer-3DX robot using a control architecture based on the Middleware ContrACT.This approach has been validated on a patrolling mission travelling 200 m within the LIRMM laboratory during about 10 mn, to verify the state of valves.For the considered mission, the state space dimension is higher than 10^{14}.The hardware and software resources are dynamically and autonomously selected along the mission to satisfy the different performance constraints.If a resource becomes faulty and/or many obstacle avoidances occure and lead to performance drift, the developed approach finds on line a new resources allocation solution (if it exists).So this approach allows to enhance the fault tolerance of the robotic system
Da, Silva Filho José Grimaldo. "Towards natural human-robot collaboration during collision avoidance." Thesis, Université Grenoble Alpes, 2020. http://www.theses.fr/2020GRALM003.
Full textClassical approaches for robot navigation among people have focused on guaranteed collision-free motion with the assumption that people are either static or moving obstacles. However, people are not ordinary obstacles. People react to the presence and the motion of a robot. In this context, a robot that behaves in human-like manner has been shown to reduce overall cognitive effort for nearby people as they do not have to actively think about a robot's intentions while moving on its proximity.Our work is focused on replicating a characteristic of human-human interaction during collision avoidance that is the mutual sharing of effort to avoid a collision. Based on hundreds of situations where two people have crossing trajectories, we determined how total effort is shared between agents depending on several factors of the interaction such as crossing angle and time to collision. As a proof of concept our generated model is integrated into gls{rvo}. For validation, the trajectories generated by our approach are compared to the standard gls{rvo} and to our dataset of people with crossing trajectories.Collaboration during collision avoidance is not without its potential negative consequences. For effective collaboration both agents have to pass each other on the same side. However, whenever the decision of which side collision should be avoided from is not consistent for people, the robot should also account for the risk that both agents will attempt to incorrectly cross each other on different sides. Our work first determines the uncertainty around this decision for people. Based on this, a collision avoidance approach is proposed so that, even if agents initially choose to incorrectly attempt to cross each other on different sides, the robot and the person would be able to perceive the side from which collision should be avoided in their following collision avoidance action. To validate our approach, several distinct scenarios where the crossing side decision is ambiguous are presented alongside collision avoidance trajectories generated by our approach in such scenarios
Royer, Eric. "Cartographie 3D et localisation par vision monoculaire pour la navignation autonome d'un robot mobile." Phd thesis, Université Blaise Pascal - Clermont-Ferrand II, 2006. http://tel.archives-ouvertes.fr/tel-00698908.
Full textBadi, Elkébir. "Étude et réalisation d'un système de programmation et de commande de robot mobile autonome." Montpellier 2, 1989. http://www.theses.fr/1989MON20246.
Full textPeynot, Thierry Chatila Raja. "Sélection et contrôle de modes de déplacement pour un robot mobile autonome en environnements naturels." Toulouse : INP Toulouse, 2007. http://ethesis.inp-toulouse.fr/archive/00000395.
Full textKhan, Muhammad Aqib. "Design and control of a robotic system based on mobile robots and manipulator arms for picking in logistics warehouses." Thesis, Normandie, 2020. http://www.theses.fr/2020NORMLH31.
Full textLogistics involves the storage and displacement of goods. These goods are stored in warehouses and shipped to retailers in pallets. Pallets are produced on a customer’s order. Order picking for a pallet is a fatigue induced process resulting in poor performance of the workers, decreasing the productivity and inducing delays in supply chain. Flexibility is introduced to increase productivity by commissioning robots for process automation. These robots consist of autonomous ground vehicles for transporting freight and static manipulators for pick and place. A static robot has limited workspace and the capability of a manipulator is significantly enhanced by adding a mobile base. Mobile manipulation is now being exploited for pick & place and pallet production. This thesis presents a first attempt to achieve autonomous palletization using mobile manipulation. To acquire palletization by mobile manipulation requires the identification of functional blocks, to conceive a framework to achieve this task. A thorough state of the art has been prepared in this thesis corresponding to each element of the global framework. To realize the proof of concept, a prototype has been developed by leveraging existing technologies, by integrating a mobile base with manipulator and a grasping system with a gripping element. For each functional block of the global framework, control execution strategies have been developed and tested in industrial environment. Specifically, localization is acquired by the use of synthetic landmarks, a motion planning and control strategy is employed for global navigation and a rack tracking motion control has been developed for moving inside the racks. To combine and execute all the elements without deadlocks a coordination framework is used as a global supervisor. The path planner for global navigation is based on the shortest distance between two points, and rack tracking is developed by applying the conventional Hough transform to the lidar data and using the output in a nonlinear controller, while the motion planner for manipulation is based on linear trajectories. The framework for supervisory control is based on discrete event systems topology and state machines corresponding to each element have been modelized using Petri nets. Finally, the framework has been tested for a complete picking task on the mobile manipulator to validate the selection of strategies and performance of each functional element. The successful demonstration has been concluded as a first step towards the evolution of autonomous palletization
Sert, Hugues. "De l'utilisation de l'algèbre différentielle pour la localisation et la navigation de robots mobiles autonomes." Phd thesis, Ecole Centrale de Lille, 2013. http://tel.archives-ouvertes.fr/tel-00862870.
Full textGonzalez, Enrique. "Une methodologie pour la planification de trajectoires de robots mobiles autonomes : strategie de zones complementaires." Evry-Val d'Essonne, 1997. http://www.theses.fr/1997EVRY0016.
Full textDib, Alaa. "Commande non linéaire et asservissement visuel de robots autonomes." Phd thesis, Supélec, 2011. http://tel.archives-ouvertes.fr/tel-00795247.
Full textSkhiri, Faouzi. "Étude et mise en oeuvre d'algorithmes de navigation d'un robot mobile autonome dans un environnement partiellement connu." Paris 12, 1994. http://www.theses.fr/1994PA120051.
Full textTANG, XIAO. "Maintien de la coherence d'un modele de l'environnement spatial de robots mobiles autonomes : le systeme prove." Paris 6, 1994. http://www.theses.fr/1994PA066447.
Full textChanier, François. "Localisation et cartographie simultanées de l'environnement à bord de véhicules autonomes : analyse de solutions fondées sur le filtrage de Kalman." Phd thesis, Université Blaise Pascal - Clermont-Ferrand II, 2010. http://tel.archives-ouvertes.fr/tel-00719341.
Full textLampe, Alexandre. "Méthodologie d'évaluation du degré d'autonomie d'un robot mobile terrestre." Phd thesis, Institut National Polytechnique de Toulouse - INPT, 2006. http://tel.archives-ouvertes.fr/tel-00136386.
Full textDugas, Olivier. "Localisation relative à six degrés de liberté basée sur les angles et sur le filtrage probabiliste." Master's thesis, Université Laval, 2014. http://hdl.handle.net/20.500.11794/25607.
Full textWhen a team of robots have to collaborate, it is useful to allow them to localize each other in order to maintain flight formations, for example. The solution of cooperative localization is of particular importance to teams of aerial or underwater robots operating in areas devoid of landmarks. The problem becomes harder if the localization system must be low-cost and lightweight enough that only consumer-grade cameras can be used. This paper presents an analytical solution to the six degrees of freedom cooperative localization problem using bearing only measurements. Probabilistic filters are integrated to this solution to increase it's accuracy. Given two mutually observing robots, each one equipped with a camera and two markers, and given that they each take a picture at the same moment, we can recover the coordinate transformation that expresses the pose of one robot in the frame of reference of the other. The novelty of our approach is the use of two pairs of bearing measurements for the pose estimation instead of using both bearing and range measurements. The accuracy of the results is verified in extensive simulations and in experiments with real hardware. In experiments at distances between 3:0 m and 15:0 m, we show that the relative position is estimated with less than 0:5 % error and that the mean orientation error is kept below 2:2 deg. An approximate generalization is formulated and simulated for the case where each robot's camera is not colinear with the same robot's markers. Passed the precision limit of the cameras, we show that an unscented Kalman filter can soften the error on the relative position estimations, and that an quaternion-based extended Kalman filter can do the same to the error on the relative orientation estimations. This makes our solution particularly well suited for deployment on fleets of inexpensive robots moving in 6 DoF such as blimps.
Muhammad, Naveed. "Contributions to the use of 3D lidars for autonomous navigation : calibration and qualitative localization." Thesis, Toulouse, INSA, 2012. http://www.theses.fr/2012ISAT0001/document.
Full textIn order to autonomously navigate in an environment, a robot has to perceive its environment correctly. Rich perception information from the environment enables the robot to perform tasks like avoiding obstacles, building terrain maps, and localizing itself. Classically, outdoor robots have perceived their environment using vision or 2D lidar sensors. The introduction of novel 3D lidar sensors such as the Velodyne device has enabled the robots to rapidly acquire rich 3D data about their surroundings. These novel sensors call for the development of techniques that efficiently exploit their capabilities for autonomous navigation.The first part of this thesis presents a technique for the calibration of 3D lidar devices. The calibration technique is based on the comparison of acquired 3D lidar data to a ground truth model in order to estimate the optimal values of the calibration parameters. The second part of the thesis presents a technique for qualitative localization and loop closure detection for autonomous mobile robots, by extracting and indexing small-sized signatures from 3D lidar data. The signatures are based on histograms of local surface normal information that is efficiently extracted from the lidar data. Experimental results illustrate the developments throughout the manuscript
Fualdès, Thierry. "Stratégie de prise d'information pour un véhicule autonome." Toulouse, ENSAE, 1994. http://www.theses.fr/1994ESAE0018.
Full text