Looking for breakthrough ideas for innovation challenges? Try Patsnap Eureka!

Single-stator three-degree-of-freedom spherical ultrasonic motor and its excitation method

A technology of ultrasonic motor and degree of freedom, which is applied in the direction of generator/motor, piezoelectric effect/electrostrictive or magnetostrictive motor, electrical components, etc., and can solve the problems of complex overall structure, poor dynamic performance, and bulky volume , to achieve the effect of high energy density, no electromagnetic interference, and fast response

Active Publication Date: 2022-06-17
NANJING UNIV OF AERONAUTICS & ASTRONAUTICS
View PDF15 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The technical problem to be solved by the present invention is to provide a single-stator three-degree-of-freedom spherical ultrasonic motor and its excitation method for the problems of complex overall structure, bulky volume, poor dynamic performance and few degrees of freedom in the prior art in the background technology

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Single-stator three-degree-of-freedom spherical ultrasonic motor and its excitation method
  • Single-stator three-degree-of-freedom spherical ultrasonic motor and its excitation method
  • Single-stator three-degree-of-freedom spherical ultrasonic motor and its excitation method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0042] Below in conjunction with accompanying drawing, the technical scheme of the present invention is described in further detail:

[0043] The present invention may be embodied in many different forms and should not be considered limited to the embodiments described herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the scope of the invention to those skilled in the art. In the drawings, components are exaggerated for clarity.

[0044] like figure 1 , figure 2 As shown, the present invention discloses a single-stator three-degree-of-freedom spherical ultrasonic motor, which includes a casing, an end cover, N ball-head plungers, a rotor, an output shaft, a stator and a piezoelectric drive module, where N is greater than or equal to 3 Natural number.

[0045] like image 3 As shown, the casing is a hollow cylinder with an open upper end, and the inner wall of the upper end of the side wall is provi...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

Abstract

The invention discloses a single-stator three-degree-of-freedom spherical ultrasonic motor and an excitation method thereof. The spherical ultrasonic motor includes a casing, an end cover, N ball plungers, a rotor, an output shaft, a stator and a piezoelectric drive module. The stator includes an outer ring, an inner ring, a driving ring and M connecting rods, and the stator is fixed on the lower end surface of the casing through its outer ring. The rotor is spherical, its lower surface abuts against the driving ring of the stator, and its upper surface abuts against N ball plungers fixed on the lower end surface of the end cover. The piezoelectric drive module drives the stator to vibrate to make the rotor rotate. The rotor of the present invention can realize multi-degree-of-freedom rotary motion, has the advantages of simple and compact structure, no electromagnetic interference, self-locking when power off, fast response, flexible adjustment of pre-pressure, high control positioning accuracy, easy miniaturization, wide application field and high energy density Advanced advantages.

Description

technical field [0001] The invention relates to the technical field of ultrasonic motors, in particular to a single-stator three-degree-of-freedom spherical ultrasonic motor and an excitation method thereof. Background technique [0002] Ultrasonic motor is a type of motor developed by using piezoelectric materials. It uses the inverse piezoelectric effect of piezoelectric materials for energy conversion (converting electrical energy into mechanical energy), and the stator generates a trajectory that is conducive to driving the rotor under the excitation of piezoelectric ceramics. , and finally through the interface friction between the stator and the rotor, the effective motion transmission is carried out, so as to obtain the power output. Compared with the most widely used electromagnetic motors, ultrasonic motors have the advantages of simple structure, high energy density, no electromagnetic interference, self-locking when power off, fast response, high precision, and sm...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Patents(China)
IPC IPC(8): H02N2/10H02N2/12H02N2/14
CPCH02N2/108H02N2/12H02N2/142
Inventor 杨颖潘志泳邱建敏吴维
Owner NANJING UNIV OF AERONAUTICS & ASTRONAUTICS
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Patsnap Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Patsnap Eureka Blog
Learn More
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic, Popular Technical Reports.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com