Two-degree-of-freedom motion platform based on piezoelectric ultrasonic vibrator driving

A piezoelectric ultrasonic, motion platform technology, applied in the direction of piezoelectric effect/electrostrictive or magnetostrictive motors, generators/motors, electrical components, etc., can solve problems such as electromagnetic interference, complex structure, complex self-locking, etc. , to achieve the effect of simple mechanism, improved work reliability, simplified processing and assembly process

Active Publication Date: 2014-05-21
HARBIN INST OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The present invention aims to solve the problems of complex structure, electromagnetic interference, and complex self-locking existing in the existing e

Method used

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  • Two-degree-of-freedom motion platform based on piezoelectric ultrasonic vibrator driving
  • Two-degree-of-freedom motion platform based on piezoelectric ultrasonic vibrator driving
  • Two-degree-of-freedom motion platform based on piezoelectric ultrasonic vibrator driving

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Experimental program
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specific Embodiment approach 1

[0018] Specific implementation mode one: the following combination Figure 1 to Figure 6 Describe this embodiment. The two-degree-of-freedom motion platform driven by piezoelectric ultrasonic vibrators described in this embodiment includes a base 1, an outer ring piezoelectric ultrasonic vibrator 2, an outer ring 3, and two sets of outer ring preloading components 4. , moving platform 5, two inner ring mandrels 6, two inner ring piezoelectric ultrasonic vibrators 7 and two disc rotors 8;

[0019] The outer ring 3 is an arc-shaped track, and its inner and outer surfaces are provided with through grooves;

[0020] The outer ring piezoelectric ultrasonic vibrator 2 includes a driving foot 2-3 and a mounting seat 2-4, the outer ring piezoelectric ultrasonic vibrator 2 is fixedly connected to the base 1 through the mounting seat 2-4, and the driving foot 2- 3 Embedding in the through groove on the outer surface of the outer ring 3 and closely contacting the bottom of the through g...

specific Embodiment approach 2

[0024] Embodiment 2: This embodiment further defines the two-degree-of-freedom motion platform driven by piezoelectric ultrasonic vibrators described in Embodiment 1. In this embodiment, it includes a base 1 and an outer ring piezoelectric ultrasonic vibrator 2 , outer ring 3, two sets of outer ring preloading components 4, moving platform 5, two inner ring mandrels 6, two inner ring piezoelectric ultrasonic vibrators 7, two disc rotors 8, two lock nuts 9, Two bearings 10 and two disc springs 11;

[0025] The outer ring 3 is an arc-shaped track, the central angle of the arc-shaped track is 180o, and its inner and outer surfaces are provided with through grooves;

[0026] The outer ring piezoelectric ultrasonic vibrator 2 includes a metal base 2-1, a piezoelectric ceramic sheet 2-2, a driving foot 2-3 and a mounting seat 2-4, and the outer ring piezoelectric ultrasonic vibrator 2 is a metal base 2-1 and Piezoelectric ceramic sheet 2-2 is a composite formed by sticking or clamp...

specific Embodiment approach 3

[0031] Embodiment 3: This embodiment further defines the two-degree-of-freedom motion platform driven by piezoelectric ultrasonic vibrators described in Embodiment 1. In this embodiment, each inner ring mandrel 6 and outer ring 3 Bearings 10 are arranged between the ends.

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Abstract

The invention discloses a two-degree-of-freedom motion platform based on piezoelectric ultrasonic vibrator driving, relates to the technical field of multi-degree-of-freedom motion platforms, and aims to solve the problems of complex structure, electromagnetic interference and self-locking complexity of an existing electromagnetic motor driven motion platform. Two rotational degree-of-freedom platforms are directly driven by the aid of a piezoelectric ultrasonic vibrator, the two-degree-of-freedom motion platform has the outstanding advantages that the motion platform is simple in structure, low in cost, light in weight, self-locking in power failure, quite simple and convenient to machine and assemble and high in safety, energy consumption and electromagnetic interference are avoided, and serialization is easily realized. The two-degree-of-freedom motion platform is applicable to the technical field of the multi-degree-of-freedom motion platforms.

Description

technical field [0001] The invention relates to the technical field of multi-degree-of-freedom motion platforms. Background technique [0002] The existing piezoelectric ultrasonic vibrator is a resonant driver that uses the inverse piezoelectric effect of piezoelectric ceramics. It excites the natural vibration of the stator elastic body through the piezoelectric element, and forms an elliptical trajectory with driving effect on a specific area of ​​the elastic body surface. Motion, and then convert the microscopic motion of the particle into the macroscopic motion of the mover through frictional coupling. Piezoelectric ultrasonic vibrators have the advantages of simple structure, easy linear drive, high torque / thrust at low speed, high power / torque density, high positioning accuracy, fast response speed, self-locking when power off, no electromagnetic interference, and no electromagnetic interference. [0003] Two-degree-of-freedom rotary motion platforms are widely used ...

Claims

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Application Information

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IPC IPC(8): H02N2/10
Inventor 刘英想陈维山冯培连刘军考石胜君
Owner HARBIN INST OF TECH
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