An inertial non-resonant bipedal piezoelectric linear actuator

Abstract

The invention discloses an inertial non-resonant biped piezoelectric linear actuator, which comprises a base, wherein a guide rail is arranged at the upper part of the base; a stator assembly is also arranged at the upper part of the base and is axisymmetrically distributed left driving foot of the stator assembly and right driving foot of the stator assembly; left laminated piezoelectric ceramic and right laminated piezoelectric ceramic are arranged in the left driving foot of the stator assembly and the right driving foot of the stator assembly respectively; and protruding parts of the driving feet of the stator assembly are in contact with one side of the guide rail. The invention further provides a working method of the inertial non-resonant biped piezoelectric linear actuator. Voltage slow-rising and fast-dropping and fast-rising and slow-dropping same-frequency sawtooth wave voltage signals are applied to the left laminated piezoelectric ceramic and the right laminated piezoelectric ceramic in two symmetrically arranged driving foot mechanisms respectively, so that stable continuous straight motion can be achieved, and the inertial non-resonant biped piezoelectric linear actuator has the advantages of being simple in structure, stable in operation, accurate in positioning, high in motion resolution and relatively low in cost.

Description

technical field [0001] The invention belongs to the technical field of piezoelectric precision actuation, and specifically refers to an inertial non-resonant biped piezoelectric linear actuator and a working method. Background technique [0002] Because of its simple structure, precise positioning, and easy integration, piezoelectric linear motors have attracted widespread attention from home and abroad, and have been used in many technical fields. The non-resonant piezoelectric linear motor based on laminated piezoelectric ceramics not only has the advantages of traditional motors, but also overcomes the shortcomings of traditional ultrasonic motors that are susceptible to environmental factors, and has a good application prospect. [0003] The inertial motor is a micro-drive mechanism that uses the inertial impact generated by the rapid deformation of piezoelectric ceramics to achieve micro-displacement. It has many advantages such as: large range of motion, resolution can...

AI Technical Summary

Problems solved by technology

However, there are still some deficiencies in the current research technology of inertial piezoelectric linear motors, such as: the miniaturization of motor components has not been fully realized, the motor structure with precise positioning is relatively complex, the resolution of motion is not high, and the motion is not continuous. Sex makes the thrust limited and the manufacturing cost is higher

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