Sagem Sa

Francois Hodar

Mathias Woydt

Jean-Thierry Audren

This invention relates to a system, especially adapted for high-power motors, comprising at least one rotor () and means () comprising active elements () capable of rotating the rotor(s) () by their synchronized deformation; said rotating means of the rotor(s) comprising at least one petal () comprising a hot top (), characterized in that the material of each hot top () is such that it has a thermal mass capacity (Cp) of greater than 0.35 [J/g/K], and/or the material of each rotor () is such that it has a thermal capacity of greater than 2 [J/cm/K].

Developments to high power motors

The invention relates to a piezoelectric motor having a rotor and supply means (S , S ) for supplying an electrical control voltage to at least one piezoelectric element ( ) of the stator. According to the invention, the supply means (S , S ) are arranged to supply an electrical control voltage having a DC component (V ) for shifting towards the expansion state of the piezoelectric elements ( ).

Growing community of inventors

Orsay, France

Francois Hodar