Dissertations / Theses on the topic 'Vol – Simulateurs'
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Pedrali, Mauro. "Vers un environnement multimédia pour l'analyse vidéo des causes d'erreurs humaines : application dans les simulateurs d'avions." Toulouse 1, 1996. http://www.theses.fr/1996TOU10056.
Full textThis research concerns the development of a methodological approach and of a software tool for video analyses of human error causes. We integrated this tool within a multimedia environment for accident incident investigations. Our approach relies on a cognitive model and on a classification of human errors. The classification allows to reconstruct the causal chains through which latent failures, combined with cognitive aspects, give rise to active failures. We implemented this approach in a tool composed of a data organizer and an analyzer. While the organizer supports the arrangement of data concerning errors, the analyzer helps in tracing the causal chain leading to errors as a fault tree. We integrated the tool within a multimedia environment whose architecture was conceived together with the tool. This environment relies on desktop for digital video editing and on a relational database, for the storage of the results. We have structured the database on three levels, each one in relation with a precise step of a video analysis. The expert stores the scenarios at level 1 (sorted data) ; the information coming from the organizer at level 2 (organizers and analyzers) that are supposed to be used on the same set of video recordings, but whose final results (in terms of data organization and analysis) are assumed to be stored separately. We tested the tool and the multimedia environment on a case study concerning the analysis of video sequences recorded in a full flight simulator. Though usability tests are necessary to completely validate david - from the point of view of its utilization and the accuracy of the results we can obtain, this study gave us a first feedback. The acknowledged advantage in this type of analysis shows the fundamental interest to discern the set of causes responsible of an active failure, and the reconstruction of the causal chain in the cognitive process
Doré, Cyntia. "Étude de la transmissibilité d'attaches de simulateurs de vol." Mémoire, Université de Sherbrooke, 2008. http://savoirs.usherbrooke.ca/handle/11143/1424.
Full textLeclerc, Catherine. "Analyse et optimisation des mécanismes parallèles entraînés par câbles : application au simulateur de vol." Thesis, Université Laval, 2009. http://www.theses.ulaval.ca/2009/25926/25926.pdf.
Full textDaussin, Guillaume. "Génération multi-modélisations et visualisation multi-rendus de systèmes d’informations géographiques : applications aux simulateurs de vol." Rennes 1, 2009. http://www.theses.fr/2009REN1S140.
Full textThis thesis deals with the image realism enhancement in flight simulators using geographical information systems (GIS). The suggestion here is to implement different modeling techniques together in order to optimize object description. We also suggest using different rendering techniques that complement each chosen modeling technique. The geographical data is structured by bringing together objects into “layers”. These layers are optimized in order to create an interface between the simulation and the visualization systems. This structure improves the graphical quality of the objects and allows the simulation to act dynamically on the virtual world database. It is thus possible to perform geometrical deformations of objects in the GIS and to watch how those changes effect the visualization, on the one hand, and to insert, on the fly, new data into the SIG on the other hand. The dynamics and interactivity of the system lead to a reduction of the process of image synthesis production
Giocanti-Belmonte, Christophe. "Impact de l'anxiété sur la conscience de la situation : étude chez les pilotes privés." Toulouse 2, 2006. http://www.theses.fr/2006TOU20066.
Full textThe work deals with the effects of trait anxiety on situation awareness, in a private pilot population. The main objective of this study is to show that anxiety has an effect on projection skills (the third level of situation awareness). It includes an empirical study which is based on an explicit performance analysis and an implicit performance analysis. In the first analysis, pilots (n=50) were asked to perform a simulated flight. Performance was assessed through a parameter recorder. This first analysis is about explicit aspects of situation awareness. In a second analysis we carried out the study with an evaluation of implicit memory through a word-fragment completion task. Several results show that trait anxiety and performance are linked in a non linear way, and that a mild level of anxiety seems to improve performance. The discussion emphasizes the role and the need of comprehension of emotion as a way of contributing to improve flight security
Aouati, Amar. "Utilisation des technologies vocales dans une application multicanaux." Paris 11, 1985. http://www.theses.fr/1985PA112373.
Full textPrévost, Carole Gabrielle. "UAV Optimal Cooperative Obstacle Avoidance and Target Tracking in Dynamic Stochastic Environments." Thesis, Université Laval, 2011. http://www.theses.ulaval.ca/2011/27964/27964.pdf.
Full textBaldesi, Gianluigi. "Modélisation, commande et simulation des lanceurs : du linéaire au non linéaire." Toulouse, ISAE, 2008. http://www.theses.fr/2008ESAE0002.
Full textThériault, Olivier. "Intégration d'un système vidéo de poursuite de cible à un simulateur "hardware in the loop" d'avion sans pilote et évaluation d'algorithmes de surveillance." Thesis, Université Laval, 2010. http://www.theses.ulaval.ca/2010/27137/27137.pdf.
Full textGerbaud, Stéphanie. "Contribution à la formation en réalité virtuelle : scénarios collaboratifs et intégration d'humains virtuels collaborant avec des utilisateurs réels." Phd thesis, INSA de Rennes, 2008. http://tel.archives-ouvertes.fr/tel-00475589.
Full textLugo, Cárdenas Israel. "Autonomous take-off and landing for a fixed wing UAV." Thesis, Compiègne, 2017. http://www.theses.fr/2017COMP2364/document.
Full textThis work studies some of the most relevant problems in the direction of navigation and control presented in a particular class of mini‐aircraft. One of the main objectives is to build a lightweight and easy to deploy vehicle in a short period of time, an unmanned aerial vehicle capable of following a complete mission from take‐o⁄ to the following waypoints and complete the mission with an autonomous landing within a delimitated area using a graphical interface in a computer. The Trajectory Generation It is the part that tells the drone where it must travel and are generated by an algorithm built into the drone. The classic result of Dubins is used as a basis for the trajectory generation in 2D and we have extended it to the 3D trajectory generation. A path following strategy developed using the Lyapunov approach is presented to pilot a fixed wing drone across the desired path. The key concept behind the tracking controller is the reduction of the distance between the center of mass of the aircraft p and the point q on the path to zero, as well as the angle between the velocity vector and the vector tangent to the path. In order to test the techniques developed during the thesis a customized C # .Net application was developed called MAV3DSim (Multi‐Aerial Vehicle 3D Simulator). The MAV3DSim allows a read / write operation from / to the simulation engine from which we could receive all emulated sensor information and sent to the simulator. The MAV3DSim consists of three main elements, the simulation engine, the computation of the control law and the visualization interface. The simulation engine is in charge of the numeric integration of the dynamic equations of the vehicle, we can choose between a quadrotor and a xed wing drone for use in simulation. The visualization interface resembles a ground station type of application, where all variables of the vehicle s state vector can be represented on the same screen. The experimental platform functions as a test bed for the control law prototyping. The platform consists of a xed wing aircraft with a PX4 which has the autopilot function as well as a Raspberry PI mini‐computer which to the implementation of the generation and trajectory tracking. The complete system is capable of performing an autonomous take‐o⁄and landing, through waypoints. This is accomplished by using each of the strategies developed during the thesis. We have a strategy for take‐o⁄ and landing, which is generated by the navigationon part that is the trajectory generator. Once we have generated the path, it is used by the trajectory tracking strategy and withthat we have landing and take‐o⁄ autonomously
Claudepierre, Ludovic. "Simulateur électromagnétique d'erreur VOR par méthodes déterministes : Application aux parcs éoliens." Phd thesis, Toulouse, INPT, 2015. http://oatao.univ-toulouse.fr/15090/1/LCLAUDEPIERRE.pdf.
Full textBenziane, Lotfi. "Contributions à l'estimation et à la commande d'attitude de véhicules aériens autonomes." Thesis, Versailles-St Quentin en Yvelines, 2015. http://www.theses.fr/2015VERS015V/document.
Full textNowadays, we see a growing popularity of the use of Unmanned Aerial Vehicles (UAV) ofespecially Vertical Take-Off and Landing (VTOL) type. One of the most known VTOL is thequadrotor or Quadcopter which is probably the most used one as a research platform. Thisthesis deal with attitude control and estimation techniques applied to a rigid body movingin 3D space such as Quadcopter VTOL. The first contribution of this thesis is the design ofa new class of complementary linear-like filters allowing the fusion of inertial vector measurementswith angular velocity measurements and combined with algebraic algorithms asTRIAD, QUEST etc. to give an efficient attitude estimation solution. This class of filtersallows several possibilities of implementation such as the order of the filters which can bechosen high in order to reduce more the measurement noise and the form of the filters thatcan be direct or passive and the ability to take into account the possible gyro bias. Lyapunovanalysis shows the global asymptotic convergence of the estimation errors to zero. The sameprinciple of data fusion is used for the proposed new attitude control law in which the complementaryfilters were included to reduce the effect of measurement noise. The obtainedcontroller ensures almost global stability of the desired equilibrium point; it represents thesecond contribution of this thesis. The third contribution takes into consideration an interestingspecial case, where instantaneous measurements of attitude and angular velocity areunavailable. A first order linear auxiliary system based directly on vector measurements isused in an observer-like system to handle the luck of angular velocity. The proposed controllerensures almost global asymptotic stability of the trajectories to the desired equilibriumpoint. Detailed sets of experiments were done to validate the obtained results
Megret, Lise. "Étude du rôle des émotions sur les traitements différentiels mis en œuvre par des pilotes d'avions lors de la gestion de situations à risques sur simulateur de vol." Thesis, Paris 10, 2016. http://www.theses.fr/2016PA100021/document.
Full textThis research centers on the impact of emotions on a pilot who's dealing with dynamic and/or ambiguous situations. Contrary to theories that state pilots' performances are diminished by emotions, we believe that an emotional process actually has an adaptive function which subsequently helps give appropriate answers to a given situation. To verify this hypothesis, volunteer pilots are confronted with having to deal with a fuel leakage on a flight simulator. We have built a realistic 1h long scenario. The pilots are not faced with a punctual situation, akin to problem solving, but have to treat the fuel consumption anomaly during the whole length of the flight simulation. Consequently they have the possibility, in flight, to recover inappropriate responses. The readings of the pilots' heartbeat allows us to identify the emotional episodes. We show that, far from diminishing the pilots' responses, emotions are linked positively not only to the pilots' expertise, but also their performances: The pilots who have devised the best responses to the situation are also those who've registered the most emotions whilst discovering and treating the fuel leakage
Cheng, Peng. "Numerical simulations for rain-wind-induced vibration." Thesis, Paris 6, 2015. http://www.theses.fr/2015PA066722/document.
Full textA fluid structure instability phenomenon frequently occurs in the subcritical Reynolds regimes multiphase flow system, and rain--wind-induced vibration (RWIV) is taken as an example in civil engineering to characterize the aeroelastic instability caused by fluid-structure interactions. RWIV is hypothesized to be a new type of vibration; regularly accompanied by two significant phenomena: the circumferentially vibrating upper rivulet and the Von Karman vortex shedding frequency shift to a much lower value compared with the convectional evaluation; and customarily observed from the stay cables of cable--stayed bridge. Due to the complicated interactions mechanisms in the liquid-gas-solid system, the mechanism of RWIV has not been thoroughly solved and recognized by the previous researchers. Most have focused on the research topic from the field observation, the analytical dynamic model, and the wind tunnel experiment aspects, but rarely on numerical investigation aspect. To develop a systematic numerical framework, including the separated model, the semi-coupled model, the coupled model, and the multiphase multi-scale model (MMM) distinguished by different ways to simulate the rain effects when RWIV occurs, to establish highly accurate and precise numerical model for RWIV, and to recognize and clarify the mechanism of RWIV, various numerical investigations have been made in this thesis.To simulate the rain effects as an artificial rivulet (fixed/moving solid attaching/oscillating along the circumference of stay cable) when RWIV occurs, the separated method is implemented based on the incompressible Navier-Stokes equations in combination with the monotone integrated large eddy simulation (MILES) to evaluate the sub-grid stress terms. The effects of various artificial rivulet positions along the circumference of stay cable on the vortex shedding structure behind the cable, pressure distribution around the cable, and the aerodynamic force of the cable are analyzed. However, investigations indicate the positions of artificial rivulet along the circumference of cable extremely weakly affect Von Karman vortex shedding frequency near the wake of the cable.To capture the dynamic rainwater morphology evolution, the semi-coupled model simplifies the incompressible Navier-Stokes equations with the lubrication theory on the assumption that a thin water film surrounding around the cable. The investigations indicate the rainwater gathers at the locations near the separation points, and forms two symmetrical rivulets along the circumference of cable. However, both the circumferentially vibrating upper rivulet and the frequency shift phenomena accompanying RWIV cannot be solved and explained detailedly and clearly. To improve the semi-coupled model on tracking the rainwater morphology evolution, volume-of-fluid (VOF) method combined with incompressible Navier-Stokes equations is employed in the coupled model. Both the high-nonlinear rainwater rivulets evolution along the circumference of cable and the aerodynamic characteristics of stay cable can be obtained and analyzed. The results indicate rainwater rivulet are formed near the separation points along the circumference of cable; the negative pressure zone along the circumference of cable provides a prerequisite for the formation of upper rivulet. However, the computational efficiency is reduced due to the smaller droplets scatter in the surrounding air, furthermore, the assumptions, surrounding the stay cable with the constant volume of rainwater, cannot reflect the real physical conditions (i.e., rain infall process) and cannot obtain the real aerodynamic force from physical aspect