Multi-vibrator Rotary Piezoelectric Motor

Abstract

The invention provides a multi-vibrator rotary piezoelectric motor which comprises an upper end cover (3), a lower end cover (17), a radiating enclosure (15), a driving shaft (1), more than one piezoelectric power unit and piezoelectric drivers, wherein the power and torsion of the motor can increase along with the increase of the number of the piezoelectric power units; wherein the piezoelectric drivers respectively adopt an even number of vibrators, and each rectangular piezoelectric driver is provided with four rectangular piezoelectric ceramic plates and is novel in structure; a pretightening unit is unique and ensures that the pressures applied to the rectangular piezoelectric drivers are uniform; a piezoelectric vibrator frequency tracking technology is adopted, so that multi- vibrator fuzzy synchronization is realized, and each piezoelectric vibrator is ensured to be at respective resonant vibration frequency; and the driving shaft and a rotor are respectively provided with four symmetrical spline slots for connection, so that the driving accuracy between the rotor and the driving shaft is met, and the verticality of the rotor and the driving shaft is ensured, The invention provides a high-power piezoelectric motor, wherein when two piezoelectric power units are arranged, the power of the motor is 33.6W, and the torque of the motor is 3.5N.m.

Description

technical field [0001] The invention relates to a multi-vibrator rotary piezoelectric motor. Background technique [0002] As a new type of driver with research and development potential and broad market prospects, piezoelectric motor is still in an initial stage that requires continuous exploration, research and development, and improvement. Piezoelectric motors use the inverse piezoelectric effect of piezoelectric ceramics and the mechanical vibration of the stator mechanism composed of elastic bodies to drive the moving body in a linear or rotational motion through media such as friction and acoustic levitation between the stator mechanism and the moving body. output. In view of the polarization of piezoelectric ceramics and the diversity of vibration forms of elastic bodies, different vibration modes can be used to generate torque and speed, so various piezoelectric motors can be developed. However, the biggest weakness of traditional piezoelectric motors is that the o...

AI Technical Summary

Problems solved by technology

However, the biggest weakness of traditional piezoelectric motors is that the output power and torque are small, and most of them are used in small precision instruments, which limits their commercialization and practicality.

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