Discovery Technology International, Inc.

Viacheslav Lavrinenko

Serhiy Feclorovich Petrenko

Valentin Zhelyaskov

A piezoelectric motor with improved efficiency and improved specific power is disclosed. The piezoelectric motor has two frictionally engaged components mounted in such a way that they can move relative to each other. One component is a piezoelectric element in the form of a rectangular plate with metal coatings on its main planar surfaces. This component defines electrodes, where either some or all of the electrodes have leads for connection to a source of alternating voltage. The piezoelectric element is pressed by either its peripheral surfaces or by some parts of its peripheral surfaces at least by one of its sides or a section of one of its side against a cylindrical or planar surface of the other frictionally engaged component. The shape of the piezoelectric element, the arrangement and the number of the electrodes are configured to satisfy the condition of resonant excitation in the piezoelement of the first order mode of bending vibration along the length in the plane of the piezoelement during operation of the motor in one direction, and resonant excitation of the first order mode of longitudinal vibrations along the length during operation of the motor in the opposite direction.

Piezoelectric linear motor

Provided are embodiments of piezoelectric motors which comprise at least one piezo-electrically active part and one passive part which are mounted with the ability of relative movement with respect to each other and which interact with each other by friction. The piezo-electrically active part includes at least one oscillator of acoustic vibrations with one or more piezoelectric elements in the form of a planar ring with acoustically attached flat pushers made from materials such as steel or ceramic. The flat pushers are pressed to a flat surface of the piezoelectric element, either directly or through an elastic element.

Growing community of inventors

Kyiv, Ukraine

Viacheslav Lavrinenko