Linear ultrasonic piezoelectric motor, comprises movable element that is in frictional contact with rectangular resonance plate and electrodes for generating acoustic vibrations

摘要

The linear ultrasonic piezoelectric motor comprises a movable element (4) that is in frictional contact with a rectangular resonance plate (5). A frictional surface is formed by one of longitudinal narrow sides (11) of the resonance plate. Electrodes are provided, which are used to generate acoustic vibrations, and are arranged on the longitudinal wide sides (9) of the resonance plate. The electrodes are contacted with a metallic element, which is fixed under mechanical pre-load.