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

Optimum design method of six-axis vibration isolation platform

A vibration isolation platform and optimization design technology, applied in computing, special data processing applications, instruments, etc., can solve the problems of lack of standards for determining scaling factors, and the separation method cannot take into account the rotation and movement performance of the six-axis platform at the same time. optimized effect

Active Publication Date: 2016-07-06
NANJING UNIV OF AERONAUTICS & ASTRONAUTICS
View PDF5 Cites 12 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, the problem of homogenization of the Jacobian matrix has not been completely solved. The size scaling method involves how to determine the scaling value. There is still no criterion, and the separation method cannot take into account the optimization of the performance of the six-axis platform rotation and movement.
[0004] Scaling method is a reasonable and widely used method, currently there is a lack of standards for determining the scaling factor

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
  • Optimum design method of six-axis vibration isolation platform
  • Optimum design method of six-axis vibration isolation platform
  • Optimum design method of six-axis vibration isolation platform

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0052] Below in conjunction with accompanying drawing and specific embodiment, further illustrate the present invention, should be understood that these embodiments are only for illustrating the present invention and are not intended to limit the scope of the present invention, after having read the present invention, those skilled in the art will understand various aspects of the present invention Modifications in equivalent forms all fall within the scope defined by the appended claims of this application.

[0053] 1 Dual Quaternion and Jacobian Matrix with Uniform Scale

[0054] In mathematics and mechanics, the set of dual quaternions is a Clifford algebra, which can be transformed with spinor and 4×4 homogeneous transformation matrix, and can be used to represent the displacement of a rigid body in space. A dual quaternion is an ordered pair of two quaternions, the quaternion in the real part represents rotation, and the quaternion in the dual part contains movement. How...

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 method for generating a dimension balanced jacobian matrix of a general six-axis parallel mechanism based on dual quaternions. Optimum design is carried out to the moving performance of a six-axis vibration isolation platform. Rotation and movement of a tail end executer are expressed by using two quaternions. The standard of a dimension scaling factor is defined as the norm ratio of the two quaternions; the dimension balanced jacobian matrix is exported. The isotropy of partial kinematics is taken as a performance index; and the optimized vibration isolation platform has the minimum movement coupling.

Description

technical field [0001] The invention belongs to the research field of kinematics and optimal design of a parallel mechanism, in particular the optimal design of motion performance of a vibration isolation platform based on a parallel mechanism. Background technique [0002] The precise pointing of high-precision space systems requires a very quiet environment, and high-precision spacecraft such as space interferometers and laser communication equipment need to achieve nanoscale motion stability. To meet such strict requirements, many spacecraft design and control methods are used to reduce the impact of spacecraft micro-vibration on precision instruments. One of the most important techniques is to install a vibration isolation system between the source of interference and the precision instrument. The six-axis vibration isolation system based on the Stewart mechanism is a better solution, and many researchers have carried out research on this platform in recent years. As a...

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
IPC IPC(8): G06F17/50
CPCG06F30/17
Inventor 杨小龙吴洪涛李耀陈柏姚裕
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