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

Three-degree-of-freedom electromagnetic vibration isolation device based on magnetic repulsion positive and negative stiffness parallel connection

A technology with positive and negative stiffness and degrees of freedom, used in magnetic springs, shock absorbers, non-rotational vibration suppression, etc., can solve the problem of low utilization of magnetic materials, improve design flexibility, reduce manufacturing costs, and improve The effect of utilization

Inactive Publication Date: 2020-09-18
HARBIN INST OF TECH
View PDF10 Cites 6 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] Aiming at the problem that the magnetic material utilization rate of the existing three-degree-of-freedom electromagnetic vibration isolator is low, and a motion guiding mechanism is required to realize the stiffness characteristics in a specific direction, the present invention proposes a three-degree-of-freedom electromagnetic vibration isolator based on the parallel connection of positive and negative stiffness of magnetic repulsion force , the three-degree-of-freedom electromagnetic vibration isolator uses the positive stiffness generated by the X-direction magnetic spring in parallel with the negative stiffness generated by the Y-direction magnetic spring in the X direction to realize the low-frequency vibration isolation effect; in the Y direction, uses the negative stiffness generated by the X-direction magnetic spring The stiffness is connected in parallel with the positive stiffness generated by the Y-direction magnetic spring to achieve the low-frequency vibration isolation effect. In the Z direction, the negative stiffness generated by the X-direction magnetic spring is used in parallel with the negative stiffness generated by the Y-direction magnetic spring to offset the stiffness value of the Z-direction positive stiffness spring. , so as to realize the low-frequency vibration isolation effect of three degrees of freedom

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
  • Three-degree-of-freedom electromagnetic vibration isolation device based on magnetic repulsion positive and negative stiffness parallel connection
  • Three-degree-of-freedom electromagnetic vibration isolation device based on magnetic repulsion positive and negative stiffness parallel connection
  • Three-degree-of-freedom electromagnetic vibration isolation device based on magnetic repulsion positive and negative stiffness parallel connection

Examples

Experimental program
Comparison scheme
Effect test

Embodiment approach

[0030] As a specific implementation manner, the third fixed magnet 31, the third moving magnet 32, the fourth moving magnet 33 and the fourth fixed magnet 34 are magnetized along the horizontal Y axis, and the magnetization direction of the third fixed magnet 31 is the same as that of the third fixed magnet 31. The magnetization directions of the four fixed magnets 34 are the same, and opposite to those of the third moving magnet 32 ​​and the fourth moving magnet 33 .

[0031] As a specific implementation manner, the third fixed magnet 31 , the third moving magnet 32 ​​, the fourth moving magnet 33 and the fourth fixed magnet 34 are magnetized in the same direction along the horizontal X-axis or the Z-axis.

[0032] As a specific implementation, the overall structure of the three-degree-of-freedom electromagnetic vibration isolation device based on the parallel connection of positive and negative stiffnesses based on magnetic repulsion is axisymmetric, and the fixing holes are ...

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

PropertyMeasurementUnit
magnetic flux densityaaaaaaaaaa
Login to View More

Abstract

The invention provides a three-degree-of-freedom electromagnetic vibration isolation device based on magnetic repulsion positive and negative stiffness parallel connection, and belongs to the technical field of precision vibration isolation. An X-direction magnetic spring and a Y-direction magnetic spring are vertically arranged and are connected in parallel with a Z-direction positive stiffness spring, so that a positive and negative stiffness structure of the three degrees of freedom are connected in parallel; the X-direction magnetic spring is composed of a first fixed magnet, a first movable magnet, a second movable magnet and a second fixed magnet which are sequentially arrayed along a horizontal axis X, and the Y-direction magnetic spring is composed of a third fixed magnet, a thirdmovable magnet, a fourth movable magnet and a fourth fixed magnet along a horizontal axis Y in sequence. The three-degree-of-freedom electromagnetic vibration isolation device is simple and flexible in structural design, and high in magnetic material utilization rat, and realizes the low frequency / ultra-low-frequency vibration isolation effects of three-degree-of-freedom of precision instrument equipment.

Description

technical field [0001] The invention belongs to the technical field of precision vibration isolation, in particular to a three-degree-of-freedom electromagnetic vibration isolation device based on the parallel connection of positive and negative stiffnesses of magnetic repulsion force. Background technique [0002] In the process of installation, testing and experimentation of precision instruments and equipment, low-frequency micro-amplitude vibration interference in the environment has become one of the key issues affecting research results. Equipping precision instruments and equipment with low-frequency vibration isolators has gradually become a field of precision engineering to suppress environmental micro-vibration main technical means. Low-frequency vibration isolators mostly use positive and negative stiffness structures connected in parallel or in series to achieve low-frequency vibration isolation effects. At present, there are more studies on single-degree-of-free...

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 Applications(China)
IPC IPC(8): F16F15/03F16F6/00
CPCF16F6/005F16F15/03F16F2222/06F16F2228/06F16F2228/063
Inventor 崔俊宁赵亚敏邹丽敏边星元程钟义金明睿
Owner HARBIN INST OF TECH
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