Oliff & Berridge, PLC
Fine positioning system using an inertial motor based on a mechanical amplifier
The invention relates to a fine positioning system using an inertial motor based on a mechanical amplifier that comprises a first amplified inertial sub-assembly including a mechanical amplifier, a piezoactive member and a countermass. A second relative drive sub-assembly includes a clamp and a clamped member attached to the first amplified inertial sub-assembly. Asymmetric excitation cycles of the first inertial sub-assembly generate impact forces and movements amplified in a driving direction (z), thus resulting in sliding and adhesion successions of the clamped member in the clamp in order to generate a relative translation movements of the points A and B relative to the point D. The mechanical amplifier increases the step size and reduces the supply inrush currents. Fine and dynamic positioning of the point B relative to the point D can be achieved with augmented strokes using the amplifier.
Cedrat Technologies
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Frank Francois
Claeyssen Barillot