Piezoelectric driving element

摘要

The invention is directed to a piezoelectric driving element for moving a load (1) along a longitudinal axis and a corresponding driving method. The piezoelectric element comprises a piezoelectric actuator which is arranged on one side of and in contact with the load (1) and includes a plurality of active sections (2) that can be activated individually and a plurality of passive sections (3) connected to the active sections (2) for synchronous movement with them. The piezoelectric element further comprises a plurality of clamping sections (4) each connected to one of the passive sections (3) for synchronous movement with them and arranged to clamp the load (1) independently from each other and to move separately from each other along the longitudinal axis.