BENDING-TYPE PIEZO ACTUATOR Russian patent published in 2024 - IPC H10N30/20 H02N2/02 

FIELD: electricity.

SUBSTANCE: invention relates to bending-type piezoelectric actuators and is intended for use in electronics, controlled optics, micromechanics, medicine, aerospace engineering, in particular in making a piezoelectric drive of a propeller blade of a rotorcraft. Bending-type piezo actuator has a rod-like shape and includes an elastic substrate with a surface mounted piezoelectric element with two surface electrodes interacting through the piezoelectric element and outputs of electrodes for connecting a control voltage to them. Elastic substrate, piezoelectric element and piezo actuator as a whole are made curvilinear with possibility of controlled piezoelectric change of shape and/or size of its cross section, providing controlled bending – change of curvature of longitudinal axis of piezoactuator when control electric voltage is connected to outputs of its electrodes and, as a result, transition to its new equilibrium curvilinear shape.

EFFECT: increased sensitivity and range of its controlled bending deformations.

8 cl, 10 dwg