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

A six-degree-of-freedom ultra-low frequency vibration isolation device and its control system based on a zero-stiffness system

A zero-stiffness, degree-of-freedom technology, applied in the field of six-degree-of-freedom vibration isolation devices and their control systems, can solve problems such as few studies, and achieve the effect of low cost and simple structure

Active Publication Date: 2019-08-23
HARBIN INST OF TECH
View PDF11 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, there are many design schemes for single-degree-of-freedom zero-stiffness systems, but there are few studies on multi-degree-of-freedom, especially six-degree-of-freedom zero-stiffness systems

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 six-degree-of-freedom ultra-low frequency vibration isolation device and its control system based on a zero-stiffness system
  • A six-degree-of-freedom ultra-low frequency vibration isolation device and its control system based on a zero-stiffness system
  • A six-degree-of-freedom ultra-low frequency vibration isolation device and its control system based on a zero-stiffness system

Examples

Experimental program
Comparison scheme
Effect test

specific Embodiment approach 1

[0059] Specific implementation mode one: as figure 1 , figure 2 and Figure 7 Shown, in conjunction with accompanying drawing, the scheme of the present invention is described in detail:

[0060] A six-degree-of-freedom ultra-low frequency vibration isolation device based on a zero-stiffness system. The zero-stiffness system refers to a system that does not have the ability to resist elastic deformation, has continuous balance, constant potential energy, and neutral stability. Its dynamic equation can be expressed as for

[0061]

[0062] Where X is the displacement vector of the system, ε is the acceleration vector; the zero-stiffness system has the characteristics of zero natural frequency, and can realize low-frequency, ultra-low-frequency, and even low-frequency full-frequency vibration immune vibration isolation performance;

[0063] The configuration of the six-degree-of-freedom ultra-low-frequency vibration isolation device (six-degree-of-freedom ultra-low-frequ...

specific Embodiment approach 2

[0097] Specific implementation mode two: as figure 1 and image 3 As shown, other specific implementations of a single vibration isolation module are given:

[0098] The connecting assembly between the springs includes two rollers 1, two guide rails 3, and an intermediate wheel 4, and the horizontal spring includes two horizontal compression springs 2;

[0099] The two guide rails 3 are respectively fixed in the middle of the inner wall of the cylindrical housing 10, and the two are symmetrically distributed. There is a horizontal compression spring 2, the middle wheel 4 is located between the two rollers 1, the upper part of the middle wheel 4 is fixedly connected with the lower end of the upper connecting rod 11, the lower part of the middle wheel 4 is fixedly connected with the upper end of the vertical spring 5, and the middle wheel 4 under the action of the roller 1 located on both sides of it along the q i direction movement; the lower end of the vertical spring 5 is...

specific Embodiment approach 3

[0106] Specific implementation mode three: as figure 1 and Figure 4 As shown, other specific implementations of a single vibration isolation module are given:

[0107] The connecting assembly between the springs includes two sliders 1, two guide rails 3, and two connecting rods 4, and the horizontal spring includes two horizontal compression springs 2;

[0108] Two guide rails 3 are respectively fixed in the middle of the inner wall of the cylindrical housing 10, and the two are symmetrically distributed. Each slider 1 is placed in the corresponding guide rail 3, and each slider 1 and the inner wall of the corresponding cylindrical housing 10 There is a horizontal compression spring 2 between them, one end of each connecting rod 4 is hinged to the center of the corresponding slider 1, the other ends of the two connecting rods 4 are hinged, and the two connecting rods 4 are located between the two sliders 1,

[0109] The hinged parts of the two connecting rods 4 are connect...

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 six-degree-of-freedom ultralow frequency vibration isolation device based on a zero stiffness system and a control system thereof, and relates to the fields of multi-degree-of-freedom low frequency, ultralow frequency and even zero-frequency vibration isolation and micro vibration simulation experiments. The six-degree-of-freedom ultralow frequency vibration isolation device based on the zero stiffness system is formed by connecting a supporting platform, a basic platform and a vibration isolation module. The vibration isolation module comprises an upper connecting rod, a lower connecting rod, a columnar shell, a vertical spring, a horizontal spring and a connecting assembly between the springs. The upper end of the upper connecting rod is connected with the supporting platform. The lower end of the upper connecting rod penetrates through an upper end cover of the columnar shell and is connected with the connecting assembly between the springs. The upper end of the lower connecting rod is fixedly connected with a lower end cover of the columnar shell. The lower end of the lower connecting rod is connected with the basic platform. The vibration isolation module meets the characteristic of zero stiffness. In combination with a gravity environment self-adapting control system, an isolated object is in a suspended state. Low frequency, ultralow frequency and even zero-frequency full-band vibration immune and isolation performance can be realized, and the problem of the multicoupling technique of multi-degree-of-freedom ultralow frequency, vibration resonance and non-linear dynamics is solved.

Description

technical field [0001] The invention provides a six-degree-of-freedom vibration isolation device and its control system based on a zero-stiffness system, which involves a series of high-resolution earth observations in spaceflight, space-borne precision optical instruments, stable aiming of weapons and equipment, and ultra-precision instrument processing. A series of multi-degree-of-freedom low-frequency, ultra-low frequency, and even low-to-zero frequency vibration isolation and micro-vibration simulation experiments. Background technique [0002] There are a large number of multi-dimensional vibration phenomena in actual engineering, such as micro-vibration of space spacecraft, stable aiming of weapons and equipment, transportation of vehicles, machining, earthquakes, etc. In most cases, multi-dimensional vibration has adverse effects on personnel or equipment, causing different damages. For example, the micro-vibration of the spacecraft will seriously affect the imaging ...

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): F16F15/04
Inventor 曹庆杰杨涛朱光楠张潇汉梁廷伟王金龙江高腾
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