Impact of mechanical stresses on flat double sided linear electric motor multi-air gap structure guided or friction plates

The design of a linear electric machine with high-frequency alternative motion intended for the creation of the acoustic wave of a system of thermo-acoustic conversion. The main originality of the structure results from the linear guidance mode used for the moving part. Considering the high speeds and accelerations, it was impossible to use conventional mechanical guiding processes (rail and pebble, ball sleeve, etc.). The mobile is then constituted by a plate of magnets sandwich between two stators, this plate is, magnetic balance between the two stators grace to a device of controlled frictions.