Dissertations / Theses on the topic 'Commande, Système de (vol)'
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Hygounenc, Emmanuel. "Modélisation et commande d'un dirigeable pour le vol autonome." Toulouse 3, 2003. http://www.theses.fr/2003TOU30174.
Full textBayoumy, Amgad. "Application des techniques neuronales à la commande prédictive pour la commande du vol." Toulouse 3, 2002. http://www.theses.fr/2002TOU30104.
Full textEscareno, Juan Antonio. "Conception, modélisation et commande d'un drone convertible." Compiègne, 2008. http://www.theses.fr/2008COMP1746.
Full textThe goal of this thesis is developing a convertible unmanned aerial vehicle (UAV). The project is divided in three objects : the design, the modeling and the control of the vehicle. The design of the vehicle is a trade-off between a fixed-wing vehicle (airplane) and a rotary-wing vehicle (helicopter), thanks to this combination it offers a great versatility to face different kind of missions. The modeling is obtained through the Newton-Euler and Lagrange formulation. In terms of control, the convertible aircraft require specific algorithms to manipulate the take-off, the haver, the forward flight and the transition between both operation modes
Guerrero, Mata Jose Alfredo. "Modélisation, commande et vol en formation des mini-drones." Compiègne, 2009. http://www.theses.fr/2009COMP1842.
Full textThis thesis devoted to the design and implementation of control laves for UAV flight formation. It also concerns the development of a robust control methodology considering parametric uncertainty for autonomous flight of mini-UAVs. We investigate non lineal control laws for mini-UAV flight formation considering communications constraints. Different configurations of mini-UAV have been explored : a four-rotor helicopter, a bi-rotor tail-sitter and a conventional airplane have been studied. The dynamical model of each mini-UAV has been obtained using a Newton-Euler apgoach taking into account the aerodynamic forces and moments. Several control strategies have been proposed : a robust control law considers parametric uncertainty in the model, control input time delay and actuator saturations and guarantee system stability and good flight performance. Real time platforms have been developed and built to validate the theoretical remit obtained. Different control stratégies for the flight formation of mini quadrotors have been developed : a nonlinear control based on nested saturations and a nonlinear control basée on coordination control
Duan, Lili. "Contribution à la synthèse des lois de pilotage non linéaires pour les avions de transport." Toulouse 2, 2006. http://www.theses.fr/2006TOU20113.
Full textThe main objective of this thesis is to contribute to the design of new flight control laws providing enhanced manoeuvring capabilities to aircraft so that they are able to track evolutive trajectories in the whole flight domain. This has led to consider the use of recent non linear control law design techniques such as non linear inverse control, backstepping and differential flat control. The application of the non linear inverse control technique to aircraft attitude control has been investigated and illustrated by different examples. The applicability conditions of this techniques have been reviewed and robustifying terms have been introduced. However, taking into account the restrictive applicability conditions of this technique, the backstepping control technique has been considered and applied to flight path angle tracking. Then the differential flatness property of aircraft attitude dynamics has been introduced and its use to design flight control laws has been studied, proposing a control scheme including a neural network structure. Finally, a balance of the study is displayed and the interest for non linear control law design techniques for flight control applications is emphasized
Denieul, Yann. "Conception préliminaire de surfaces de contrôle et lois de commande pour configurations d’avions non conventionnelles." Thesis, Toulouse, ISAE, 2016. http://www.theses.fr/2016ESAE0033/document.
Full textNext generation of civil transport aircraft is likely to be a radical change in overallconfiguration compared to traditional tube-and-wing design. From a handling qualities perspective,current trend in modern airliners is to evolve towards more and more unstable aircraft, bothfrom longitudinal and lateral-directional point of view. As a consequence future aircraft may notbe controllable by human operator without stabilizing control laws. It then becomes necessaryto consider flight control systems contribution early in the design phase for control surfaces,empennages and actuators sizing, as opposed to traditional way of working dealing only withopen-loop criteria for preliminary sizing. Instead of an iterative process of sizing and controllaws synthesis, we propose to concurrently optimize control surfaces, actuators and flight controllaws taking into account longitudinal and lateral instability as well as industrial structure forcontrollers, for unstable configurations such as Blended Wing-Body (BWB). This “co-design”procedure enables sizing of physical aircraft parameters taking into account benefits from feedbackstabilization for counteracting external disturbance such as atmospheric turbulence, thus leadingto safer and more optimal aircraft configurations
Poinsot, Damien. "Commande d'un drone en vue de la conversion vol rapide - vol stationnaire." Phd thesis, Ecole nationale superieure de l'aeronautique et de l'espace, 2008. http://tel.archives-ouvertes.fr/tel-00441083.
Full textAndrei, Geanina. "Contribution à la commande tolerante aux pannes dans la conduite du vol." Thesis, Toulouse, INSA, 2010. http://www.theses.fr/2010ISAT0033/document.
Full textThis thesis uses the nonlinear inverse control technique to synthesize control laws for dealing with two types of failures aboard transport airplanes. The first type of failure affects some actuators without compromising the overall controllability of the airplane: this situation arises particularly in the case of an isolated fault whose effects can theoretically be compensated taking into account the redundancy of actuators in terms of their effects on the dynamics of flight. The problem that arises is the reallocation of control surfaces to maintain for it, when possible, a standard behaviour in both equilibrium and makeover situations. The case of an aileron failure is studied here and a roll manoeuvre is considered for standard response of the aircraft. At this level, looking for the solution of this problem will lead us to combine the nonlinear inverse control technique and classical Mathematical Programming solicited online in order to take account of all material and structural constraints to be taken into account to ensure safety of the aircraft. The second considered type of failure affects an entire chain of command, leading to catastrophic situations where the aircraft is no more controllable in the classical sense and requires the immediate interruption of commercial flight to find a solution for the survival of people on board the aircraft through an emergency landing. In this thesis we consider the case of total loss of power for aerodynamic actuators and we develop a flight safety strategy based on a sequence of flight phases to which are associated limited control objectives based on the few opportunities from the only remaining actuators, the aircraft engines. Here too, the nonlinear inverse control technique plays an important role in the synthesis of control laws essential to put the airplane inacceptable conditions for landing
Bobrinskoy, Alexandre. "Algorithmes et architectures pour la commande et le diagnostic de systèmes critiques de vol." Thesis, Bordeaux, 2015. http://www.theses.fr/2015BORD0007/document.
Full textFlight-Critical Systems such as Electromechanical Actuators driven by Engine Control Units (ECU) or Flight Control Units (FCU) are designed and developed regarding drastic safety requirements. In this study, an actuator control and monitoring ECU architecture based on analytic redundancy is proposed. In case of fault occurrences, material redundancies in avionic equipment allow certaincritical systems to reconfigure or to switch into a safe mode. However, material redundancies increase aircraft equipment size, weight and power (SWaP). Monitoring based on dynamical models is an interesting way to further enhance safetyand availability without increasing the number of redundant items. Model-base dfault detection and isolation (FDI) methods [58, 26, 47] such as observers and parity space are recalled in this study. The properties of differential flatness for nonlinear systems [80, 41, 73] and endogenous feedback linearisation are used with nonlinear diagnosis models. Linear and nonlinear observers are then compared with an application on hybrid stepper motor (HSM). A testing bench was specially designed to observe in real-time the behaviour of the diagnosis models when faults occur on the stator windings of a HSM
Sanahuja, Guillaume. "Commande et localisation embarquée d'un drone aérien en utilisant la vision." Compiègne, 2010. http://www.theses.fr/2010COMP1869.
Full textThis work is about obtaining non linear control laws to stabilize an UAV (Unmanned Air Vehicle), and also about localization using vision. First, a bibliographie study over UAVs and their control laws was dope. Thus several laws were tested and compared on a PVTOL (Planar Vertical Take Off and Landing) airplane platform. A control law stabilizing a system with n integrators based on saturation functions was proposed. The particularity of this law is that each state is separated. Then a quadrirotor platform was built, as well as a simulator for the quadrirotor. This one allows to run the UAV's program on a computer thanks to a dynamical model and can provide the vision algorithms to be tested with virtual images. Some computer vision algorithms were tested. In order to deal with the embedded criteria, a light optical flow method (working in only one direction) was implemented on a mobile robot to avoid obstacles. Then, stereovision based solutions using laser pointers were proposed. The first technique allows to estimate the attitude and the second one allows to do wall following. Finally, a control scheme using a predictor and an observer was studied. This combination takes into account some delays in the control loop, which can corne from the video processing. Moreover, the proposed scheme allows to efficiently use a captor with a high sample time (like camera) whereas the control law is running faster
Garcia, Salazar Octavio. "Modélisation et commande d'un avion à décollage vertical." Compiègne, 2009. http://www.theses.fr/2009COMP1836.
Full textThis thesis is focussed on the design, modeling and control of the VTOL (Vertical Take off and Landing) UAVs. The control of these vehicles is implemented in order to perform autonomous flights. A functional description of these machines is described and the mathematical models are obtained by using the Newton-Euler formulation. These dynamic models include gyroscope effect, actuator torque, aerodynamic terms, thrust and gravitational forces. Vertical flight is studied for the tail-sitter UAVs (T-Plane, V-co-aX and CPlane). Control laws based on saturation functions are proposed for the stabilization of these UAVs in hover mode. Simulation and experimental results are obtained during the hover flight. Longitudinal dynamics (2-D model), including the aerodynamic terms, is analyzed for the Twister UAV, and a nonlinear control law is proposed for achieving the global stability of this vehicle. For the C-Plane vehicle, the longitudinal model is studied to perform the transition maneuver and the aerodynamic terms are obtained by considering the propeller analysis. Furthermore, results obtained from simulation and real time show an effective behavior of the proposed control laws. Finally, an embedded control system is developed to test the proposed control strategies. This system consists of low-cost sensors. A homemade inertial measurement unit was designed to perform the complete operational range of the vehicle (including vertical and horizontal modes). This IMU incorporates an analog complementary filter whose objective is to estimate the angular position
Saussié, David. "Contrôle du vol longitudinal d'un avion civil avec satisfaction de qualités de manœuvrabilité." Toulouse, ISAE, 2010. http://www.theses.fr/2010ESAE0010.
Full textDuval, Jérôme. "Conception et mise en oeuvre d'un système d'actionneurs AMF répartis pour le contrôle de forme électroactif de voilures aéronautiques." Phd thesis, Toulouse, INPT, 2005. http://oatao.univ-toulouse.fr/7266/1/duval.pdf.
Full textEr-Rafai, Mohamed Mouhieddine. "Télécommande asservie robotisée d'hélicoptère." Paris 11, 1989. http://www.theses.fr/1989PA112206.
Full textAntonioli, Jean-Charles. "Spécification de lois de commande pour hélicoptères orientée Qualités de Vol." Thesis, Aix-Marseille, 2015. http://www.theses.fr/2015AIXM4333/document.
Full textThis study is in the field of designing helicopter control laws. Designers must tune the gains of these laws in order to meet as much as possible Handling Qualities requirements from ADS-33. This standard translates these requirements in terms of Flying Qualities requirements. Then, we can evaluate the quality of the stability, of the quickness, and of the ability of the machine to follow the inputs from the pilot. Apart from an interactive optimization technique developed at NASA and US Army over the last 40 years, no appropriate method exists to solve this problem. Then, empirical iterative tunings are led. ONERA addresses this issue through a structured methodological approach. The aim of the thesis is to develop this methodology, taking into account two additional constraints compared with the capabilities of usual synthesis methods used in automatics: the capability to deal with the constraints from the control law structures and with the Handling Qualities requirements from the ADS-33 standards. A technique is developed to improve the Flying Qualities using sensitivity studies between gains and criteria. Then, a methodology to initialize the gains is developed, through the creation and the efficient usage of new Flying Qualities-based charts for equivalent simplified models. In order to improve the efficiency of the initial tuning, two additional constraints are taken into account (uncoupling and energy). Thus, a complete full procedure of tuning is proposed: initialization, linear adjustment and non linear adjustment
Fleischmann, Sebastian. "Gain-scheduled controller design framework : an application of cluster analysis to the field of feedback control." Thesis, Strasbourg, 2018. http://www.theses.fr/2018STRAD044.
Full textThis thesis presents a new framework for the design of gain-scheduled controllers. Part of this framework is a novel merging of system & control theory (the ν-gap and pointwise gap metric) and cluster analysis, a common technique in statistical data analysis, machine learning, data mining, etc. The combination of both fields allows for a subdivision of a nonlinear system's operating domain into sectors in order to retrieve information on the feedback behaviour before the actual control design. Each sector represents a part of the operating domain with similar feedback properties, i.e. operating points inside a sector are more similar (as measured by the pointwise gap metric) to each other than to operating points in other sectors. The sectoring solution is used in the proposed framework to support the design of a linearization-based gain-scheduled controller. For example, a reduced and optimized distribution of design points for the LTI controllers is selected and the sectors' distribution is exploited for the blending of the individual linear controllers into an operating domain wide nonlinear controller. The overall advantage of the framework is that it presents a systematic procedure that potentially reduces the overall time, effort, and therefore cost of a development project by preventing unnecessary iterations in the design cycle specifically associated with the control design. The proposed framework is verified at the example of a generic industrial missile benchmark
Villaumé, Fabrice. "Contribution à la commande des systèmes complexes : application à l'automatisation du pilotage au sol des avions de transport." Toulouse 3, 2002. https://tel.archives-ouvertes.fr/tel-00010946.
Full textRoussel, Emmanuel. "Contribution à la modélisation, l'identification et la commande d'un hélicoptère miniature." Thesis, Strasbourg, 2017. http://www.theses.fr/2017STRAD030/document.
Full textControl algorithms are at the heart of the stability and automatic flight capabilities of any aerial vehicle. Synthesis and simulation of control laws are based on a mathematicalmodel of the vehicle, which must be a trade-off between simplicity and accuracy. This work presents a complete system identification methodology applied on a miniature coaxial helicopter. Based on flight mechanics and aerodynamics, several models are built. They differ in the aerodynamic phenomena taken into account. They are identified, compared and validated thanks to flight data, highlighting important phenomena in the accuracy of the model. Several flight control strategies are then studied and evaluated through simulations and experiments with a prototype. The results are in accordance with numerical simulations, thus validating the whole approach
Muñoz, Hernández Laura Elena. "Stabilisation d'un véhicule aérien autonome en présence de vent." Compiègne, 2012. http://www.theses.fr/2012COMP2055.
Full textThis thesis is focused in the design of original and robust control strategies to stabilize an Unmanned Aerial Vehicle (UAV) in presence of wind disturbances. The proposed control strategies have been tested in simulations and in real-time experiments in two different platforms. It introduces the mathematical model of a UAV in presence of wind. We obtained the dynamical model which takes into account the complementary forces induced by the wind for a Planar Vertical Take-Off and Landing (PVTOL) aircraft and for the quadrotor rotorcraft. On the other hand, three different nonlinear control laws based on the Lyapunov analysis have been developed to stabilize the UAV in presence of wind. The first approach uses the Robust Control Lyapunov Functions (RCLFs). Given the complexity of the problem, we begun with a mini car which moves on its longitudinal axis. This result has been extended to the case of the PVTOL aircraft and to the quadrotor rotorcraft. Several simulations have been carried out to validate the proposed algorithms. To test its viability in a real application, we have realized experiments using a PVTOL prototype. The simulations and experimental results in real time showed the good performance of the control law in closed loop. The second approach is based on the saturation functions. We have proposed a robust analysis with respect to unknown external disturbances and nonlinear uncertainties in the model. The proof takes the hypothesis that the wind is bounded. The algorithms have been tested in a quadrotor prototype and the results showed a good performance even in presence of wind disturbances. The last approach considers the intrinsic properties of the quadrotor flying vehicle, specially the passivity. Thus, a sub-optimal control law has been developed. The analysis is based on the full energy of the system, the passivity, the Lyapunov theory and the use of dynamic programming. The simulation results have showed that this control law can be useful when the flying vehicle has to do more complex maneuvers than hover. Finally, a control scheme using a state observer has been developed. This scheme uses the Extended Kalman Filter (EKF) to estimate the position in the (x,y) plain and the vertical velocity z of a quadrotor rotorcraft. Using the measurements of an inertial measurement unit, an altitude sensor, a vision system and the control inputs the system state is estimated. The vision system is used to compute the translational velocities of the vehicle and it is composed by a camera and an optical flow algorithm. The estimator has been validated by experiments in real time and the results have been very conclusive
Martini, Adnan. "Modélisation et commande de vol d'un hélicoptère drone soumis à une rafale de vent." Phd thesis, Université de Metz, 2008. http://tel.archives-ouvertes.fr/tel-00340584.
Full textKoehl, Arnaud. "Modélisation, observation et commande d'un drone miniature à birotor coaxial." Phd thesis, Université Henri Poincaré - Nancy I, 2012. http://tel.archives-ouvertes.fr/tel-00709015.
Full textBouadi, Hakim. "Contribution to flight control law design and aircraft trajectory tracking." Thesis, Toulouse, INSA, 2013. http://www.theses.fr/2013ISAT0001/document.
Full textSafety and environmental considerations in air transportation urge today for the development of new guidance systems with improved accuracy for spatial and temporal trajectory tracking.The main objectives of this thesis dissertation is to contribute to the synthesis of a new generation of nonlinear guidance control laws for transportation aircraft presenting enhanced trajectory tracking performances and to explore the feasibility and performances of a flight guidance system developed within a space-indexed reference with the aim of reducing tracking errors and ensuring the satisfaction of overfly time constraints as well as final arrival time constraint. Before presenting the main approaches for the design of control laws for autopilots and auto-guidance systems devoted to transport aircraft and the way current Flight Management Systems generates guidance directives, flight dynamics of transportation aircraft, including explicitly the wind components, are presented. Then, the interest for adaptive flight control is discussed and a self contained adaptive flight path tracking control for various flight conditions taking into account automatically the possible aerodynamic and thrust parametric changes is proposed. Then, the main recognized nonlinear control approaches suitable for trajectory tracking are analyzed. Finally an original vertical space-indexed guidance control law devoted to aircraft trajectory tracking is developed and compared with the classical time-indexed approach
Gheorghe, Anca. "Détection robuste et précoce de l’embarquement et du grippage dans le système de commandes de vol." Thesis, Bordeaux 1, 2013. http://www.theses.fr/2013BOR14801/document.
Full textThe research work done in this PhD has been carried out under an industrial convention (CIFRE) between the IMS laboratory (Bordeaux University, France) and Airbus Operations S.A.S. (Toulouse, France). The thesis deals with two important Electrical Flight Control System failure cases: runaway (a.k.a. hard over) and jamming (or lock-in-place failure) of aircraft control surfaces. Early and robust detection of such failures is an important issue for achieving sustainability goals and for early system reconfiguration. The thesis focuses on the elevator runaway and jamming. Three model-based monitoring strategies are presented. The first approach is based on a dedicated Kalman filtering with optimised tuning parameters. The second method is based on a decision test applied to an identified sensitive direction in the parametric space. Finally, the third solution is based on a sliding mode differentiator. The techniques have been implemented in the flight control computer and validated on Airbus test facilities and during real flight tests. The experimental results confirmed that good level of performance and robustness can be obtained
Shen, Tsurng-Jehng. "Les réseaux de neurones affinés et leur application à la commande automatique du vol." Toulouse, INPT, 1995. http://www.theses.fr/1995INPT067H.
Full textEstival, Pierre. "Concept Innovant d‘Actionneur Electromécanique pour la Commande de Vol d'Hélicoptère de Nouvelle Génération." Thesis, Université Paris-Saclay (ComUE), 2015. http://www.theses.fr/2015SACLS137.
Full textThe thesis aim is the pre-design of a direct drive electromechanical actuator for Fly-By-Wire flight control of rotorcraft.The pre-design of this actuator answer to a Airbus Helicopters patent and all component must be compliant with the safety criteria of embedded system for critical function. Over a first phase, a method of electromechanical actuator’s pre-design and particularly of electrical machine is described with an analytical model. This model is linked with an optimization algorithm in order to minimize the actuator’s mass with the whole performances. A full scale prototype has been built.Over a second phase, architecture and methods for designing control are described in order to obtain the specification performances in term of precision, speed and stability. To improve the design process and the dynamic prediction of the control, multiphysics models have been developed and used.At last, the prototype is integrated on a test bench. This one allow to validate the electrical machines pre-design and more generally, to characterize the built electrical motors. A series of failure case’s tests takes place in order to analyze and measure all the actuator effect of the failure case
Rullan, Lara José Luis. "Conception et implantation embarquée d'un système de localisation en utilisant les signaux radio pour la stabilisation d'un mini drone." Compiègne, 2011. http://www.theses.fr/2011COMP1984.
Full textThe Unmanned Aerial Vehicles are complex and difficult dynamic systems to control. In spite of the efforts realized on the stabilization approaches (nested saturation, back-stepping, etc. ), the control laws have been always focused to stabilize the orientation of the vehicle and few works has been developed to estimate its position. Since real measurements are noisy and are not directly observable or measurable from the sensors, the estimation of the position is a difficult problem to resolve. Numerous approaches have been proposed for position’s estimation. In particular, vision and GPS have been explored in indoor and outdoor, respectively. However, there remain many challenges to its application in UAVs. This dissertation presents a solution to the problem of location of UAV indoor using radio signals. The k-nearest neighbor (KNN) algorithm, the least squares algorithm and the Extended Kalman filter have been tested and validated in real time. The performances of the algorithms were validated during hover flight and path following flight of a mini helicopter. In order to validate the algorithms, I developed a mini helicopter with four rotors (quad rotor) with the computer architecture for implementing onboard embedded control laws for its stability and for the implementation of localization tasks
Boada, Bauxell Josep. "Sur la commande de satellites à entrées saturantes." Toulouse, ISAE, 2010. https://tel.archives-ouvertes.fr/tel-00564267.
Full textRonceray, Lilian. "Méthodologies de réglage automatique temps-réel de lois de pilotage." Phd thesis, Toulouse, ISAE, 2009. http://tel.archives-ouvertes.fr/tel-00430820.
Full textMiquel, Thierry. "Contribution à la synthèse de lois de commande pour la navigation relative entre aéronefs." Phd thesis, Université Paul Sabatier - Toulouse III, 2004. http://tel.archives-ouvertes.fr/tel-00933491.
Full textBertrand, Sylvain. "Commande de drone miniature à voilure tournante." Phd thesis, Université Nice Sophia Antipolis, 2007. http://tel.archives-ouvertes.fr/tel-00702441.
Full textBaldesi, Gianluigi. "Modélisation, commande et simulation des lanceurs : du linéaire au non linéaire." Toulouse, ISAE, 2008. http://www.theses.fr/2008ESAE0002.
Full textBouzgou, Kamel. "Contribution à l'architecture, la modélisation et la commande d'un bras manipulateur aérien." Electronic Thesis or Diss., université Paris-Saclay, 2021. http://www.theses.fr/2021UPASG012.
Full textUnmanned aerial vehicles (UAVs), progressively used by different military and commercial tasks, have the possibility to move in a 3D environment in Cartesian coordinates to assist humans, inspect dangerous areas or photography. Some of these missions require contact with the environment, such as handling objects in flight. In order to accomplish this kind of mission, that thesis made it possible to consider and design a dual system consisting of a manipulator arm connected to the base of a multirotor. The main problem resulting from this new structure involves the ability to stabilize the mechanism concurrently with a permanent change in its inertia due to the movement of the manipulator. In this manuscript, a new concept of the aerial manipulator is proposed, capable of stabilizing the system with the implementation of a prismatic joint to operate the center of gravity of the whole system while keeping it as close as possible to the vertical axis. A further contribution in this study, when a new classification of aerial manipulation systems based on a symbolic formula is introduced, capable of specifying the type and number of multirotors and manipulators used within the mechanical structure. A new algorithm for calculating the solutions of the inverse geometric model, based on an analytical approach, is thus developed and compared to iterative algorithms presented in the literature. The dynamic model of the overall system is obtained by the use of symbolic mathematical tools and functions developed in this project. Two modeling methods, coupled and decoupled, have been introduced. The control part is designed for a coupled system using three control laws and applied to various scenarios, each consisting of multilayer blocks (trajectory planning, internal layer of position and attitude control, control block of virtual entry). Different values of the angles of the manipulator arm joints are analyzed and tested for the efficiency of the prismatic joint. Three approaches to the interaction of the end organ of the robotic arm with the environment are implemented and simulated. A case study and the application of the control impedance module are simulated. Finally, the approaches and methods implemented in this thesis are validated using a virtual prototype in the SimMechanics environment, where a graphical user interface GUI is designed to manipulate and visualize the system during programmed scenarios, thus demonstrating the interest of the main thesis contributions
Zammali, Amira. "Approche d'intégrité bout en bout pour les communications dans les systèmes embarqués critiques : application aux systèmes de commande de vol d'hélicoptères." Thesis, Toulouse 3, 2016. http://www.theses.fr/2016TOU30028/document.
Full textIn critical embedded systems, ensuring dependability is crucial given both dependability requirements imposed by certification authorities and dependability constraints of these systems where failures could lead to catastrophic events even loss of human lives. The architectures of these systems are increasingly distributed deploying complex digital networks which raise the issue of communication integrity. In this context, we propose an end to end approach for communication integrity. This approach is based on the "black channel" concept introduced by IEC 61508. It uses error detection codes particularly CRC, Adler and Fletcher. Depending on the redundancy level of targeted systems, we propose a multi-codes approach (integrity of a set of messages) for systems with an important redundancy level and a single- code approach (integrity per message) for the other cases. We validated our proposals through experiments in order to evaluate intrinsic error detection capability of each error detection code, their complementarity in terms of error detection and their computational costs by analyzing the impact of the type of implementation and the hardware environment (standard or embedded: i7, STM32, TMS320C6657 and P2020 processors). The single-code approach was applied to an industrial case study: future flight control systems of Airbus Helicopters
Duval, Jérôme Nogarède Bertrand. "Conception et mise en oeuvre d'un système d'actionneurs AMF répartis pour le contrôle de forme électroactif de voilures aéronautiques." Toulouse : INP Toulouse, 2005. http://ethesis.inp-toulouse.fr/archive/00000121.
Full textSalazar, Amparo. "Commande d'objets volants miniatures : application à un avion à décollage et atterrissage vertical (PVTOL)." Compiègne, 2005. http://www.theses.fr/2005COMP1553.
Full textThe work of this thesis generally concerns the control of flying machines or miniature helicopters. The goal is to develop new control strategies for stabilization, autonomous flight of systems, but also to be interested in their implementation on real prototypes. Initially, we have been interested in the control of a small-scale model helicopter or a vertical takeoff vehicle moving on a plane : PVTOL (Planar Vertical Take-off and Landing) or ADAV (Avion à Décollage et Atterrissage Vertical). The PVTOL is a simplified system which has a minimun number of states and inputs but which retains many of the features that must be considered when designing controllaws for a real aircraft. It also represents the longitudinal mode of an helicopter. The PVTOL has interested the control community because of its applications and its nonlinear character. Relatively simple control laws based on techniques of nested saturations have been proposed in this work. These strategies respect the bounds on the control law inputs. An original experimental setup has been developed in order to validate our control algorithms. This experimental setup consists of a PVTOL aircraft prototype which moves on an inclined plane, which defines the workspace in two dimensions, and also of a CCD camera used as a position sensor. Initially and by simplicity, the camera has been placed outside and perpendicular to the plane. The position and the orientation have been obtained from the image given by the camera. We have used a simple control law for the stabilisation of the system, and in order to simplify the experimental tests on the real setup. This control law ensures the convergence of the state towards the origin
Gheorghe, Anca. "Détection robuste et précoce de l'embarquement et du grippage dans le système de commandes de vol." Phd thesis, Université Sciences et Technologies - Bordeaux I, 2013. http://tel.archives-ouvertes.fr/tel-00879224.
Full textDrouin, Antoine. "Contribution à la synthèse de lois de pilotage et de guidage pour les minidrones." Phd thesis, Université Paul Sabatier - Toulouse III, 2012. http://tel.archives-ouvertes.fr/tel-00985428.
Full textLavigne, Loïc. "Outils d'analyse et de synthèse des lois de commande robuste des systèmes dynamiques plats." Phd thesis, Université Sciences et Technologies - Bordeaux I, 2003. http://tel.archives-ouvertes.fr/tel-00186323.
Full textBoivin, Eric. "Contrôle coopératif et prédictif d'avions sans pilote en présence d'obstacles ellipsoïdaux statiques et inconnus." Thesis, Université Laval, 2008. http://www.theses.ulaval.ca/2008/25849/25849.pdf.
Full textThe main objective of this master's project is to develop a predictive control algorithm that will allow unmanned aerial vehicles (UAVs) to intercept static targets of known position. UAVs must however avoid static ellipsoidal obstacles detected on-route, when they are in close proximity to the aircrafts. Information on the detected obstacles must also be transmitted to fellow UAVs. Each aircraft can receive information from another aircraft, only if they are in communication range. Moreover, it is assumed that each aircraft is equipped with an autopilot (on-board control device) to stabilize the UAV in-flight. The predictive control algorithm must thus determine the commands to transmit to the autopilot. The developed algorithm was tested in simulation and with a Hardware-In-the-Loop (HIL) system, both of which yielded successful results.
Delmond, Fabien. "Alternatives à la synthèse multi-objectifs : forme standard de passage et ajustements de loi de commande." Toulouse, ENSAE, 2005. http://www.theses.fr/2005ESAE0017.
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 textYoussef, Anis. "Réseau de communication à haut niveau d'intégrité pour des systèmes de commande-contrôle critiques intégrant des nappes de microsystèmes." Phd thesis, Institut National Polytechnique de Toulouse - INPT, 2005. http://tel.archives-ouvertes.fr/tel-00111808.
Full textL'étude que nous avons effectuée sur des réseaux standard montre que les protections classiques à base de codes CRC ne permettent pas d'obtenir le niveau d'intégrité visé.
Pour l'atteindre, nous avons proposé une solution originale - fonction de contrôle évolutive - qui tire profit du fait que, pour les systèmes de commande-contrôle envisagés (systèmes à dynamique lente), l'intégrité est à considérer sur un lot de messages et non sur un seul message. La solution proposée a ensuite été validée via des simulations Matlab-Simulink.
Le cas d'étude utilisé est celui de systèmes de commande de vol du futur, en vue de pouvoir commander des nappes de milliers de micro-surfaces tels que des micro-spoilers.
Nguyen, Dang Hao. "Formation control for a group of underactuated vehicles." Thesis, Université de Lorraine, 2015. http://www.theses.fr/2015LORR0164/document.
Full textFormation control relates with the motion control of multiple vehicles to accomplish a common task. The motivation of formation control is because of the advantages achieved by using a formation of vehicles instead of a single one. Cooperative control approach can be cataloged into three main groups: leader-follower, behavior-based and virtual structure. Each group consists of individual vehicles and the communication allows the information be exchanged among vehicles. Position control for under-actuated quadrotors or VTOL UAVs has been focused in several group in the research community. Due to the under-actuated nature of VTOL UAVs, the system attitude must be used in order to control the position and velocity of the system. Moreover, the effect of external disturbance, uncertainty of the dynamics and the requirement of achieving the global results make the control design process more difficult. Developing from a global controller for a single quadrotor, a new thrust and attitude extraction algorithm is proposed. This algorithm allows transferring an intermediate control force to a thrust force to achieve the translational objective and an unit quaternion vector as a reference for the rotational subsystem. This algorithm is also embedded in the formation controller. Five formation controllers are developed and separated into two groups, virtual structure and leader-follower approach. The first three formation controllers are constructed by using the virtual structure approach. The unmeasured linear velocity, disturbance and uncertainty in the dynamics are solved by employing observer design and adaptive backstepping control design technique. The last two formation controllers are built by using the leader-follower approach. The leader follower formation for quadrotors and for second order system are constructed. The changing of formation shape in working time also is simulated in these last two formation controllers. In all five formation controllers, collision avoidance function constructed from a smooth step function is embedded. This function generates a pushing force when a quadrotor goes close to the others and a pulling force when a quadrotor travels out of the sensing range. The simulation results show that this collision avoidance function works quite effectively and there is no collision among quadrotors and obstacles. It can be summarized that by using the thrust and attitude extraction algorithm and the collision avoidance function, the control design process becomes easier and all the formation controllers achieve the global results
Bochot, Thomas. "Vérification par Model Checking des commandes de vol : applicabilité industrielle et analyse de contre-exemples." Toulouse, ISAE, 2009. http://www.theses.fr/2009ESAE0003.
Full textRondon, Sallan Eduardo. "Navigation d'un véhicule aérien par flux optique." Compiègne, 2010. http://www.theses.fr/2010COMP1912.
Full textThis thesis is focused in the design of visual strategies to ensure the autonomousnavigation of a quad-rotor rotary wing UAV. The first step on thisstudy was to design a quad-rotor perfectly suited for the requirements related to the visual navigation such as fast rotational dynamics and sufficient payload capabilities. Then the stabilization and the speed regulation problem were addressed. For this purpose, we have developed a vision system which estimates the altitude, the lateral position and the forward speed of the engine during flights. We show that the visual information allows the construction of control strategies for different kinds of flying modes: hover flight, forward flight at constant speed. A hierarchical control strategy is developed and implemented. An experimental autonomous flight was successfully achieved, validating the visual algorithm and the control law. However, in order to be completely autonomous the robot must be capable to overcome all unexpected changes in its environment. To achieve the required functions, a reactive behavior has been built. The proposed approach aims to detect and avoid frontal obstacles using known properties of the optical flow and by taking advantage of the capability of stationary flight of the rotorcraft. A state machine is proposed as a solution to equip the UAV with all reactions necessary for indoor navigation. We show how smooth transitions can be achieved by decreasing the speed of the vehicle proportionally to the distance to an obstacle and by brief instants of stationary flight
Simon, Pascal. "Détection robuste et précoce des pannes oscillatoires dans les systèmes de commandes de vol." Thesis, Bordeaux 1, 2011. http://www.theses.fr/2011BOR14377/document.
Full textThe research work done in this PhD has been caried out in the frame of an industrial convention (CIFRE) between the IMS laboratory and Airbus Operations S.A.S. The thesis deals with robust and early detection of oscillatory failures (OFC: Oscillatory Failure Case) in the Electrical Flight Control System. An oscillatory failure is an abnormal oscillation of a control surface due to component malfunction in control surface servoloops. OFCs have an influence on structural loads, aeroelasticity and controllability when located within the actuator bandwidth. The ability to detect these failures is very important because they have an impact on the structural design of the aircraft. Usual monitoring techniques cannot always guarantee to remain within an envelope with acceptable robustness. In this work, we develop a model based strategy to detect such failures with small amplitude at a very early stage. The monitoring strategy is based on dedicated non linear local filtering for on-line joint parameter/state estimation, allowing for model parameter variations during A/C flight. This strategy is associated with the same decision making rules as currently used for in-service Airbus A380. We propose a method for adjusting the tuning parameters so that various design goals and trades-off can be easily formulated and managed. The performance of the proposed fault detection scheme is measured by its detection delay, its propensity to issue false alarms and whether it permits a failure to go undetected. The proposed technique has been implemented and tested with success on Airbus test facilities including an A380 flight simulator
Pucci, Daniele. "Vers une stratégie unifiée pour la commande des véhicules aériens." Phd thesis, Université Nice Sophia Antipolis, 2013. http://tel.archives-ouvertes.fr/tel-00865829.
Full textCieslak, Jérôme. "ANALYSE ET SYNTHESE D'UNE ARCHITECTURE COOPERATIVE POUR LA COMMANDE TOLERANTE AUX DEFAUTS - APPLICATION A UN SYSTEME AERONAUTIQUE." Phd thesis, Université Sciences et Technologies - Bordeaux I, 2007. http://tel.archives-ouvertes.fr/tel-00178592.
Full textSève, Florian. "Commande robuste pour une classe de systèmes non linéaires à paramètres variants : application aux projectiles guidés." Thesis, Université de Lorraine, 2016. http://www.theses.fr/2016LORR0281.
Full textThis thesis addresses the development of the flight dynamics and control laws for an artillery spin-stabilized projectile equipped with a decoupled guidance nose. A projectile nonlinear model is discussed, and it is used for computing a linearized model of the nose roll dynamics along with a q-LPV model of the highly parameter-varying pitch/yaw-dynamics. Modeling uncertainty is taken into account for autopilot design. Important properties specific to spin-stabilized projectiles, which are relevant to pitch/yaw-channel cross-coupling, internal modes and stability, are highlighted using the q-LPV model. In order to use the latter for calculating a control law, the dimension of its parameter vector is reduced and the position of the nose-embedded sensors is considered. A single linear controller is sufficient for the nose roll angle dynamics whereas a systematic linearization-based gain-scheduled control strategy is separately devised to provide a pitch/yaw-axis load factor gain-scheduled controller. Controllers of reduced-order fixed structures are computed by applying the same H∞ linear design loop-shaping approach for the roll and pitch/yaw-axes. Very good closed-loop performance and robustness properties, which are similar to those provided by full order controllers, are obtained. Finally, the effectiveness of the autopilot augmented by a pure proportional navigation guidance law is verified through a variety of nonlinear trajectory simulations. The latter correspond to nominal flight scenarios with ballistic, non-ballistic stationary, and maneuvering interception points, and to scenarios with perturbed launch conditions or guided projectile dynamics
Saif, Osamah. "Reactive navigation of a fleet of drones in interaction." Thesis, Compiègne, 2016. http://www.theses.fr/2016COMP2269/document.
Full textNowadays, applications of autonomous quadrotors are increasing rapidly. Surveillance and security of industrial sites, geographical zones for agriculture for example are some popular applications of Unmanned Aerial Vehicles (UAVs). Nowadays, researchers and scientists focus on the deployment of multi-UAVs for the inspection and the surveillance of large areas. The objective of this thesis is to design algorithms and techniques to perform a real-time distributed/decentralized multi-UAVs flight formation control, from a system of systems perspective. Firstly, we reviewed recent works of the literature about flight formation control and the control of quadrotors. We presented a brief introduction about systems of systems, their definition and characteristics. Then, we introduced the flight formation control with its most used structures in the literature, some existing works dealing with flocking. Finally, we presented the most used modeling methodologies for quadrotors and some control approaches that are used to stabilize quadrotors. Secondly, we used the behavioral-based control structure to achieve a multiple UAV flocking. We conceived a behavior intending to address the control design towards a successful achievement of the flocking task without fragmentation. The proposed behavior treats the flocking problem from a global perspective, that is, we included a tendency of separated UAVs to form a flock.System of systems challenges motivated us to look for flocking and consensus algorithms introduced in the literature that could be helpful to answer to these challenges. This led us to propose four flocking control laws aiming at being compatible with the nonlinear model of quadrotors and at being implemented on experimental platforms. The control laws were run aboard each quadrotor in the flock. By running the control law, each quadrotor interacts with its neighbors to ensure a collision-free flocking. Finally, we validated our proposed control laws by simulations and real-time experiments. For the simulation, we used a PC-based simulator of flock of multiple quadrotors which was developed at Heudiasyc laboratory. For experiments, we implemented our control laws on ArDrone2 quadrotors evolved in an indoor environment equipped with an Optitrack motion capture system