Academic literature on the topic 'Commande sous contrainte'
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Journal articles on the topic "Commande sous contrainte":
Bonneuil, Noël. "Jeux, équilibres et régulation des populations sous contrainte de viabilité. Une lecture de l'œuvre de l'anthropologue Fredrik Barth." Population Vol. 52, no. 4 (April 1, 1997): 947–76. http://dx.doi.org/10.3917/popu.p1997.52n4.0976.
Amari, Saïd, Isabel Demongodin, and Jean-Jacques Loiseau. "Méthode formelle de commande sous contraintes de temps dans les dioïdes." Journal Européen des Systèmes Automatisés 39, no. 1-3 (April 30, 2005): 319–34. http://dx.doi.org/10.3166/jesa.39.319-334.
Houssin, Laurent, Sébastian Lahaye, and Jean-Louis Boimond. "Commande en juste-à-temps sous contraintes de systèmes (max, +)-linéaires." Journal Européen des Systèmes Automatisés 39, no. 1-3 (April 30, 2005): 335–50. http://dx.doi.org/10.3166/jesa.39.335-350.
Bonneuil, Noël. "Games, equilibria and population regulation under viability constraints: An interpretation of the work of the anthropologist Fredrik Barth." Population Vol. 53, HS1 (December 1, 1998): 151–79. http://dx.doi.org/10.3917/popu.p1998.10n1.0179.
Millet, Pierre-Alain. "Une modélisation objet des processus industriels." Revue Française de Gestion Industrielle 14, no. 3-4 (December 1, 1995): 27–37. http://dx.doi.org/10.53102/1995.14.03-4.242.
Alamir, Mazen. "Une méthode du point fixe pour la mise en œuvre de la commande prédictive non linéaire sous contraintes sur des EDP. Application à la stabilisation sous contraintes de l'équation aux dérivées partielles non linéaires de Kuramoto-Sivashinski." Journal Européen des Systèmes Automatisés 45, no. 7-10 (December 30, 2011): 693–713. http://dx.doi.org/10.3166/jesa.45.693-713.
Filion, Michel. "La publicité américaine à la radio canadienne : le cas du réseau français de Radio-Canada, 1938-1958." Revue d'histoire de l'Amérique française 51, no. 1 (August 26, 2008): 71–92. http://dx.doi.org/10.7202/305623ar.
Moneim A. Aziz, Aladdine. "Le silence et la distance dans l’œuvre littéraire de Saint-Exupéry." Al-Adab Journal 1, no. 119 (December 24, 2018): 19–32. http://dx.doi.org/10.31973/aj.v1i119.334.
Lux, André. "Essai de synthèse." V. Dialectique des recherches urbaines 9, no. 1-2 (April 12, 2005): 133–40. http://dx.doi.org/10.7202/055402ar.
FILLALI, S., N. BENMESSASOUD, and F. MALEM. "Approche de commande prédictive gédictive généralisée sous contrainte d'un procédé de distillation." Technologies Avancées 13, no. 1 (June 15, 2004). http://dx.doi.org/10.4314/ta.v13i1.18462.
Dissertations / Theses on the topic "Commande sous contrainte":
Fischman, Arao. "Commande robuste des systèmes sous contraintes structurelles." Grenoble INPG, 1998. http://www.theses.fr/1998INPG0007.
Pfeiffer, Laurent. "Analyse de sensibilité pour des problèmes de commande optimale. Commande optimale stochastique sous contrainte en probabilité." Phd thesis, Ecole Polytechnique X, 2013. http://pastel.archives-ouvertes.fr/pastel-00881119.
Nguyen, Minh Tri. "Commande adaptative multivariable avec contraintes." Grenoble INPG, 1989. http://www.theses.fr/1989INPG0100.
Jabbari, Imed. "Commandes non linéaires sous contraintes pour les Robots Parallèles à Câbles." Electronic Thesis or Diss., Université de Lorraine, 2022. http://www.theses.fr/2022LORR0186.
This study concerns the control of nonlinear systems under constraints for parallel robots with cables. These have grown in popularity over the past twenty years. Indeed, cable robots have several advantages over rigid robots, namely a very large workspace, moving heavy loads with high speed and precision, low inertia, simple and fast reconfiguration, and finally low manufacturing cost. The applications are numerous: in the medical field, in biology, to study the behavior of insects in free flight, in port activities to move containers or for the construction of buildings.This type of system represents a major interest in the analysis and synthesis of dynamical systems. Indeed, cable robots, through their modeling, represent a large class of nonlinear electromechanical systems with the additional difficulty of solving an algebraic constraint on cable tensions. It is worth pointing out that the control of (free-end) robots has been largely addressed/solved by classical approaches using elegant solutions, the control of cable robots remains a difficult problem to solve given this constraint. There are few results, often local and heuristic with simplifying assumptions, but far from being a satisfactory solution.It is useful to remember that the main feature of cable robots is that the kinematic chains are not rigid segments, but made up of flexible cables. The latter are attached, at one end, to the mobile base (or terminal device in industrial parlance) and, at the other end, to an electric actuator/motor. This particularity introduces a strong constraint, unlike series robots with free ends, on the tensions of the cables which must belong to a given and positive range in order to avoid breaks or the formation of belly. Therefore, the issues related to the control of parallel robots with cables are not only to bring the robot from one point to another, to follow a trajectory, but also to satisfy these constraints.In this thesis, we answer this problem by proposing simple and effective control laws according to two different approaches:The first consists in developing a control law with convergence in finite time using the “sliding mode” method for a robot with eight motors (moving in 3D). Very few parameters are required to implement this technique, which still requires an optimization algorithm. Numerical simulations are promising and give very satisfactory results.The second approach is quite different and original, after some clever transformations, we write the dynamics of the error in a bilinear form then we establish a time control law varying under saturation constraints. By using a time-varying Lyapunov function, we demonstrate the exponential convergence of the tracking error. This result has been successfully applied to robots with four motors (2D) and then with eight motors (3D). It is important to emphasize that this approach, contrary to the literature, is freed from the use of optimization algorithms which can sometimes pose convergence problems.Finally, it is useful to emphasize that these results have been validated through several numerical simulations
Malisani, Paul. "Pilotage dynamique de l'énergie du bâtiment par commande optimale sous contraintes utilisant la pénalisation intérieure." Phd thesis, Ecole Nationale Supérieure des Mines de Paris, 2012. http://pastel.archives-ouvertes.fr/pastel-00740044.
Leishman, Frédéric. "Conception de fonctionnalités d'assistance robotisée à la mobilité sous contrainte d'acceptabilité et d'adaptabilité." Electronic Thesis or Diss., Université de Lorraine, 2012. http://www.theses.fr/2012LORR0039.
The Smart Wheelchairs, that are equipped for autonomous navigation functionalities, aim to relieve people with disabilities who have difficulty to drive a standard electric wheelchair. Since the 80s, many studies have been conducted to design such prototypes but very few have led to real progress for users and only for simple functionalities. This can be explained by several factors, including the underestimation of the constraints of acceptability and adaptability. In this context, our goal is to provide a driving assistance in respect of these constraints. For this, we design a lightweight system, consisting of three laser sensors, a camera and a computer. It is adaptable to any type of electric wheelchair and allowed us to develop the functionalities of passing through of the narrow passages and wall following, as well as an ergonomic human-machine interface. This latter is established by a deictic command which consists in to provide an overview of the environment where the user indicates the chosen autonomous task by his application location, and then the wheelchair performs the corresponding action automatically. Moreover, all contact with the joystick gives back the control to the user so that he does not feel a prisoner of assistance; well the driving is composed of alternating manual controls and indications on the interface. Finally, the evaluation of our assistance in the conduct took place in three stages. The first, qualitative, is to present and to do try the system to potential users. In a second step, we compare quantitatively the performance of the assistance driving with those of a manual driving on a panel of valid persons (travel time, number of actions, discomfort index?). The third step is to assess the cognitive load of users in both driving modes by measuring the attentional load and decision-making capacity from a dual task method
Leishman, Frédéric. "Conception de fonctionnalités d'assistance robotisée à la mobilité sous contrainte d'acceptabilité et d'adaptabilité." Thesis, Université de Lorraine, 2012. http://www.theses.fr/2012LORR0039/document.
The Smart Wheelchairs, that are equipped for autonomous navigation functionalities, aim to relieve people with disabilities who have difficulty to drive a standard electric wheelchair. Since the 80s, many studies have been conducted to design such prototypes but very few have led to real progress for users and only for simple functionalities. This can be explained by several factors, including the underestimation of the constraints of acceptability and adaptability. In this context, our goal is to provide a driving assistance in respect of these constraints. For this, we design a lightweight system, consisting of three laser sensors, a camera and a computer. It is adaptable to any type of electric wheelchair and allowed us to develop the functionalities of passing through of the narrow passages and wall following, as well as an ergonomic human-machine interface. This latter is established by a deictic command which consists in to provide an overview of the environment where the user indicates the chosen autonomous task by his application location, and then the wheelchair performs the corresponding action automatically. Moreover, all contact with the joystick gives back the control to the user so that he does not feel a prisoner of assistance; well the driving is composed of alternating manual controls and indications on the interface. Finally, the evaluation of our assistance in the conduct took place in three stages. The first, qualitative, is to present and to do try the system to potential users. In a second step, we compare quantitatively the performance of the assistance driving with those of a manual driving on a panel of valid persons (travel time, number of actions, discomfort index?). The third step is to assess the cognitive load of users in both driving modes by measuring the attentional load and decision-making capacity from a dual task method
Trabuco, D´orea Carlos Eduardo. "Sur l'(A, B)-invariance de polyèdres convexes ; application à la commande sous contraintes et au problème l1." Toulouse 3, 1997. https://tel.archives-ouvertes.fr/tel-00010088.
Nahayo, Fulgence. "Modèle mathématique d’optimisation non-linéaire du bruit des avions commerciaux en approche sous contrainte énergétique." Thesis, Lyon 1, 2012. http://www.theses.fr/2012LYO10080/document.
This thesis develops an mathematical non-linear optimization model of flight paths of two aircraft in approach minimizing the perceived noise on the ground while energetic constraint is considered. This is an analytical model of non-linear and non-convex optimal control governed by a system of ordinary differential equations resulting from the dynamics of flight and with their associated constraints. Our contribution focuses on the mathematical modeling equations, optimization and algorithmic programming of an acoustic non-linear optimization model of two aircraft simultaneously on approach. The addressed issues are the mathematical development of the «correct» 3D model, their flight dynamics, the mathematical modeling of the optimal control of dynamic system, the consideration of fuel consumption by aircraft as a differential equation with a consumption function specific variable depending on the evolution of their dynamics, the mathematical modeling of the instantaneous objective function representing the overall noise of the two approaching aircraft. Resolution deals with the direct method of sequential quadratic programming with confidence regions while AMPL programming language and KNITRO are considered. An indirect method was applied under the Pontryagin maximum principle, followed by a Runge-Kutta symplectic partitioned discretization to demonstrate the commutation between the direct approach and indirect approach. The expected results confirm optimal trajectories reducing ground noise and fuel consumption of two aircraft
Derbel, Nabil. "Sur l'utilisation de la programmation dynamique différentielle pour la commande optimale de systèmes complexes." Toulouse, INSA, 1989. http://www.theses.fr/1989ISAT0036.