Patent ID: 8004153

Claim:
A fine positioning system comprising: a first inertial sub-assembly including at least one piezoactive element and at least one inertia point, and able to produce impact forces and movements at an actuating point in an actuating direction, a second relative drive sub-assembly including at least one drive member and one driven member, one of the two members being fixed to the first inertial sub-assembly via the actuating point, and an electronic circuit for supplying each piezoactive element of the first inertial sub-assembly according to predefined excitation cycles, wherein: the first inertial sub-assembly comprises a mechanical amplifier amplifying the movements of the piezoactive element, the actuating point is situated on the mechanical amplifier, without coming into direct engagement with the piezoactive element, and the drive member and the driven member are in the form of at least one clamp and one clamped element to allow a sliding-adhesion movement.