PIEZOELECTRIC ACTUATOR Russian patent published in 2023 - IPC H02N2/02 H10N30/20 

FIELD: actuators.

SUBSTANCE: invention relates to piezoelectric actuators of axial movements for the implementation of axisymmetric radial axial movements and is intended for use in micromechanics, controlled optics, sensor technology, acoustics, in particular in the manufacture of piezoelectric acoustic membrane-type elements. The piezoelectric actuator includes a piezoelectric layer, on the surface of which a two-wire conductive line is installed in the form of two electrode tape coatings. The piezoelectric layer is made in the form of a film. The conductive line is made in the form of one or several double spirals, each of which consists of electrically unconnected two similar electrode tape coatings of a spiral type located close to each other on the upper and/or lower surface of the piezoelectric layer.

EFFECT: increase in the efficiency.

5 cl, 2 dwg