Modélisation et simulation des microsystèmes à base de céramiques : Applications transformateur piézoélectrique et contrôle actif des vibrations

Abstract

The Work presented in this memory joins within the framework of the studies integration of the electronic devices generally and the Microsystems piezoelectric in particular known under the name of MEMS (Micro Electro Mechanical Systems’s). Two applications are exposed in this work. Micro transformers and transducers for the active control of vibrations. It is presented in the first chapter, a recall on piezoelectricity and a state of the art of their use. In the second chapter are presented two techniques of characterization and quantification of the direct and indirect effects of the piezoelectric. The second part distributed on the chapters three and four is devoted to the study of modelling and the simulation of the piezoelectric transformer and finally the sensors and the actuators with piezoelectric ceramics are modelled and simulated for the active control of a multivariable system (MIMO). That is compared with the mono-variable system (SISO).