Academic literature on the topic 'Contrôlabilité en moyenne'
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Journal articles on the topic "Contrôlabilité en moyenne":
Cabot, Isabelle, and Stéphanie Facchin. "Élaboration et validation de l’Échelle de perception d’un centre d’aide en français du postsecondaire (ÉPCAFP)." Canadian Journal of Education/Revue canadienne de l'éducation 44, no. 2 (June 30, 2021): 466–95. http://dx.doi.org/10.53967/cje-rce.v44i2.4761.
Dissertations / Theses on the topic "Contrôlabilité en moyenne":
Danhane, Baparou. "Contrôlabilité en sortie." Electronic Thesis or Diss., Université de Lorraine, 2022. http://www.theses.fr/2022LORR0246.
This thesis focuses on the output controllability of linear systems. In general, the concept of controllability when mentioned, refers to the state of the system. More precisely, the main question is whether or not it is possible to send (in finite time) the system from an arbitrarily chosen initial state to a prescribed final state. However, in some situations, one may be interested in controlling a variable other than the state (e.g. a combination of the system state and the system input). This is the case, for example, if one wants to control the difference in position between two cars, or if one has coupled differential equations and aims to control certain variables of the system.The concept of output controllability was introduced in the 60's by J. Bertram and P. Sarachick to address this kind of problem. In this framework, instead of controlling the state, the idea is to control a variable called output which is a combination of the state and the input of the system. Unfortunately, this concept did not get the same infatuation as that of the state. Consequently, there are very few results in the literature on this subject and well-known controllability criteria in the state framework for linear systems have not been extended to the output framework.The first goal of this thesis will be to complete and refine the existing results in the literature for linear systems. We will establish necessary and sufficient conditions for finite-time controllability of the output and when the system is output controllable, we will show how to construct the appropriate inputs to achieve the desired output values in finite time.The second part of this thesis is devoted to the output controllability of linear systems whose dynamics depend on a parameter. Such systems frequently appear in practical life.For example, in the case of the cars mentioned above, their dynamics depend on their mass, which varies according to the number of people carried. We can think, in a general way, of any physical system whose dynamics depend on a parameter which is inherent to it and which is not precisely known.The purpose of this last part will be to establish conditions for which any output trajectory (trajectory here refers to a function of the parameter) can be "reached" in finite time with parameter independent inputs. Necessary and/or sufficient conditions will be established with applications to averaged controllability
Rozanova, Anna. "Equation de Khokhlov-Zabolotskaya-Kuznetsov : analyse mathématique, validation de l'approximation et méthode de contrôle." Paris 6, 2006. https://tel.archives-ouvertes.fr/tel-00126487.
We consider the Khokhlov-Zabolotskaya-Kuznetsov (KZK) equation in Sobolev spaces of functions periodic on x and with mean value zero. The derivation of KZK from the isentropic Navier Stokes equations and approximation their solutions (for viscous and non viscous cases), the results of the existence, uniqueness, stability and blow-up of solution of KZK equation are obtained, also a result of existence of a smooth solution of Navier-Stokes system in the half space with periodic in time mean value zero boundary conditions. We prove the local controllability of moments for two systems described by a nonlinear evolution equation in Banach space and by a nonlinear heat equation. We obtain sufficient conditions on the size of the neighborhood from which we can take the function from the overdetermination condition so that the inverse problem is uniquely solvable. We also prove the controllability result for linearized KZK equation
Han-Kwan, Daniel. "Contribution à l'étude mathématique des plasmas fortement magnétisés." Phd thesis, Université Pierre et Marie Curie - Paris VI, 2011. http://tel.archives-ouvertes.fr/tel-00615169.
Rozanova-Pierrat, Anna. "Equation de Khokhlov-Zabolotskaya-Kuznetsov. Analyse Mathématique, Validation de l'approximation et Méthode de Contrôle." Phd thesis, Université Pierre et Marie Curie - Paris VI, 2006. http://tel.archives-ouvertes.fr/tel-00126487.