PIEZOELECTRIC ACTUATOR Russian patent published in 2023 - IPC H10N30/50 B64C13/00 

FIELD: devices based on piezomaterials.

SUBSTANCE: invention relates namely to piezoelectric actuators of axial and/ or angular movements, and is intended for use in micromechanics, controlled optics, sensor technology, acoustics, in particular, in the manufacture of plate piezoelectric actuators for installation on the working surfaces of helicopter blades with variable airfoil geometry. 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 solid or hollow prismatic or cylindrical rod. The conductive line is made in the form of one or two 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 inner and/or outer surface of the piezoelectric layer.

EFFECT: increased efficiency of the piezoelectric actuator.

9 cl, 5 dwg