. . "Contr\u00F4le dynamique semi-actif global par r\u00E9injection \u00E9nerg\u00E9tique sous syst\u00E8mes pi\u00E9zo\u00E9lectriques" . "Mat\u00E9riaux pi\u00E9zo\u00E9lectriques" . . "Syst\u00E8mes pi\u00E9zo\u00E9lectriques" . "Contr\u00F4le dynamique semi-actif global par r\u00E9injection \u00E9nerg\u00E9tique sous syst\u00E8mes pi\u00E9zo\u00E9lectriques" . . "Text" . . "Vibrations are present in all the aspects of our life (industrial, human, natural. . . ) They are either indesirable and even harmful (causing materials fatigue, damage or failure of mechanic structures . . . ) or in opposite, benefical since they can generate useful energy (energy harvesting techniques and conversion into electric energy by electrostatic, electromagnetic or piezoelectric materials ) It is this duality that inspired us, in the frame of this thesis which has the aim of re-using the energy of the vibrations of a mechanical structure through re-injecting it in a vibration control scheme. Either in the industrial domain, in the everyday life or in nature, vibrations phenomena are widely present in our environment. Most of the time, they are taken as the undesirable consequences of running systems. However, news approaches tend to consider them as a promising source of information or energy. This duality motivated the framework of this thesis. In this latter, the possibilities of using such a source of energy in the control-law for a vibrating system have been treated. Hence, the energy coming from the vibrations of a mechanical structure can contribute to monitor or to reduce them. This approach is particularly interesting in the scope of a so-called regenerative control process. This process aims to be substitued to a fully-active control solution which, for as efficient as it can be, is very demanding in terms of suppplied operating power. The technique of control presented in this thesis is named global semi-active control law of vibrations. It manages the availability of the energy coming from the vibrating system in order to reduce or even to eliminate the dependency of the control law toward any external power source. The achieved performances can therefore be comparable to the ones of a fully-active law. The energy needs are minimized thanks to the principles of energy storage and feedback. The energy harvesting technique uses the piezoelectric materials. This choice was made considering this materials\u2019 properties in terms of electromechanical coupling, bulk dimensions, mass. The reinjection of the harvested energy in the proposed control law is applied in a hybrid piezo-actuated mount." . . . "Contr\u00F4le actif du bruit et des vibrations" . "2013" . . "Que ce soit dans le domaine industriel, dans notre vie quotidienne ou m\u00EAme dans la nature, les ph\u00E9nom\u00E8nes vibratoires sont largement pr\u00E9sents dans notre environnement. La plupart du temps, nous les appr\u00E9hendons comme des cons\u00E9quences ind\u00E9sirables, voire nuisibles, du fonctionnement de syst\u00E8mes. Toutefois, une nouvelle approche tend \u00E0 les consid\u00E9rer comme une source int\u00E9ressante d\u2019information et d\u2019\u00E9nergie. Cette dualit\u00E9 est le fondement du cadre de ces travaux de th\u00E8se. Ces derniers traitent en effet de la capacit\u00E9 \u00E0 utiliser une telle source d\u2019\u00E9nergie dans une loi de contr\u00F4le des vibrations d\u2019une structure. Ainsi, l\u2019\u00E9nergie des vibrations d\u2019une structure m\u00E9canique peut contribuer \u00E0 contr\u00F4ler ou att\u00E9nuer les vibrations de celle-ci. Cette approche est tout particuli\u00E8rement int\u00E9ressante dans l\u2019objectif d\u2019un contr\u00F4le dit r\u00E9g\u00E9n\u00E9ratif, qui vise \u00E0 se substituer au contr\u00F4le dit actif, certes tr\u00E8s efficace et performant mais exigeant vis-\u00E0-vis des ressources en \u00E9nergie. La technique de contr\u00F4le pr\u00E9sent\u00E9e dans ce travail de recherche est appel\u00E9e contr\u00F4le semi-actif global des vibrations parce qu\u2019elle g\u00E8re l\u2019\u00E9nergie globale du syst\u00E8me m\u00E9canique de mani\u00E8re \u00E0 augmenter les r\u00E9serves \u00E9nerg\u00E9tiques dans le but de diminuer la d\u00E9pendance de la loi de contr\u00F4le d\u2019une source d\u2019\u00E9nergie externe ou m\u00EAme l\u2019\u00E9liminer (loi de contr\u00F4le autonome). De cette fa\u00E7on, les performances obtenues peuvent se rapprocher de celle d\u2019une loi purement active. Les besoins \u00E9nerg\u00E9tiques sont moindres gr\u00E2ce aux principes de stockage et de restitution d\u2019\u00E9nergie. La technique de r\u00E9cup\u00E9ration d\u2019\u00E9nergie est ici bas\u00E9e sur l\u2019utilisation de mat\u00E9riaux pi\u00E9zo\u00E9lectriques. Ce choix a \u00E9t\u00E9 fait en consid\u00E9ration des propri\u00E9t\u00E9s pr\u00E9sent\u00E9es par ces mat\u00E9riaux en terme de couplage \u00E9lectrom\u00E9canique, d\u2019encombrement et de masse. La r\u00E9injection de l\u2019\u00E9nergie r\u00E9sultante du processus de r\u00E9cup\u00E9ration d\u2019\u00E9nergie dans la loi de contr\u00F4le propos\u00E9e est \u00E9tudi\u00E9e pour le cas d'un plot hybride \u00E0 base d\u2019actionneurs pi\u00E9zo\u00E9lectriques." . . . . "Th\u00E8ses et \u00E9crits acad\u00E9miques" . . . . . . . . .