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

A composite dynamic-static coupling piezoelectric actuator and its driving method

A piezoelectric actuator, dynamic and static coupling technology, applied in the direction of piezoelectric effect/electrostrictive or magnetostrictive motors, electrical components, generators/motors, etc., can solve the problem of reducing output force, limited overall range of motion, There are problems such as defects in practicability, and the effect of improving energy conversion rate and output, realizing dynamic and static coupling excitation, and simple structure

Active Publication Date: 2021-02-19
SOUTH CHINA AGRI UNIV
View PDF5 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

For this reason, it is usually necessary to use a displacement amplification mechanism to expand the output displacement of the piezoelectric actuator, but even with a displacement amplification mechanism, its overall range of motion is still limited
In addition, the increased output displacement is at the cost of reducing the output force, and there are still shortcomings in practicality

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
  • A composite dynamic-static coupling piezoelectric actuator and its driving method
  • A composite dynamic-static coupling piezoelectric actuator and its driving method
  • A composite dynamic-static coupling piezoelectric actuator and its driving method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment

[0030] The labels of the various components in the drawings are as follows: driving foot 1, third piezoelectric stack 2, piezoelectric electrode sheets 2-1 and 2-2 in the third piezoelectric stack, first fixing frame 3, fixing bolt 4 , the first piezoelectric stack 5 , the piezoelectric electrode sheets 5 - 1 and 5 - 2 in the first piezoelectric stack, the first connecting bolt 6 , the second fixing frame 7 , and the second connecting bolt 8 .

[0031] The various parts and working principle of a composite dynamic-static coupling piezoelectric actuator of this embodiment will be described in detail below with reference to the accompanying drawings.

[0032] In this embodiment, a composite dynamic-static coupled piezoelectric actuator includes a first diamond-shaped micro-displacement amplification mechanism, a second diamond-shaped micro-displacement amplification mechanism, a third diamond-shaped micro-displacement amplification mechanism, and a driving foot 1. The structure o...

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 composite dynamic-static coupling piezoelectric actuator and its driving method. The actuator includes a first diamond-shaped micro-displacement amplification mechanism, a second diamond-shaped micro-displacement amplification mechanism, and a third diamond-shaped micro-displacement amplification mechanism. And the driving foot, the first diamond-shaped micro-displacement amplification mechanism includes a first fixed frame, one end of the first fixed frame is fixed, and a first piezoelectric stack is arranged along the axial direction inside the first fixed frame, adjacent to the first fixed frame A second diamond-shaped micro-displacement amplifying mechanism and a third rhombus-shaped micro-displacement amplifying mechanism are respectively arranged on both sides, and the tops of the second rhombus-shaped micro-displacement amplifying mechanism and the third rhombus-shaped micro-displacement amplifying mechanism are connected together by driving feet, and the two A second piezoelectric stack and a third piezoelectric stack are respectively provided inside along the axial direction. The actuator of the invention has a simple and compact structure, can realize the drive of the motor under static DC voltage and dynamic AC voltage, realizes dynamic and static coupling excitation, and has the advantages of high positioning accuracy and wide application range.

Description

technical field [0001] The invention belongs to the technical field of piezoelectric actuators, and in particular relates to a composite dynamic-static coupling piezoelectric actuator based on a piezoelectric stack amplification mechanism and a driving method thereof. Background technique [0002] With the development of technology, precise positioning has become a key technology in related technical fields. For example, in the scientific and engineering applications of scanning probe microscope, micro-nano surgery, biomedicine and other fields, precise positioning technology plays a vital role. In these applications, the requirements for range of motion and resolution of the positioning system are typically on the order of millimeters and nanometers, respectively, requiring very good precision in the actuators. [0003] The factors affecting precise positioning in the actuator mainly include the control method of the actuator, mechanical structure, measurement technology an...

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): H02N2/04H02N2/06
CPCH02N2/043H02N2/062
Inventor 张铁民王英智
Owner SOUTH CHINA AGRI UNIV
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