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

Modeling method for space three-body flexible tethered satellite formation system in non-inertial reference frame

A satellite formation and system modeling technology, applied in the field of spacecraft flight, can solve the problems of ignoring the flexibility of tethers and reducing the accuracy of the model, and achieve the effects of simplifying the modeling process, improving accuracy, and great practical value

Active Publication Date: 2021-04-27
NANJING UNIV OF AERONAUTICS & ASTRONAUTICS
View PDF2 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In addition, when discussing the flexible tether, it is often considered as an ideal rigid rod model, ignoring the flexibility of the tether for the convenience of research, but this greatly reduces the accuracy of the model

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
  • Modeling method for space three-body flexible tethered satellite formation system in non-inertial reference frame
  • Modeling method for space three-body flexible tethered satellite formation system in non-inertial reference frame
  • Modeling method for space three-body flexible tethered satellite formation system in non-inertial reference frame

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0071] The specific implementation manners of the present invention will be further described in detail below in conjunction with the accompanying drawings.

[0072] Such as figure 1 An in-orbit three-body tethered satellite formation system shown, the system consists of three flexible tethers connecting three satellites S 1 , S 2 and S 3 Composition, the center of mass of the formation system is o.

[0073] Satellite S 1 The mass of is denoted as m 1 ;Satellite S 2 The mass of is denoted as m 2 ;Satellite S 3 The mass of is denoted as m 3 ;Connect to satellite S 1 and S 2 The length of the flexible tether is L 12 , the stiffness is E 12 A 12 , the line density is Connect to Satellite S 2 and S 3 The length of the flexible tether is L 23 , the stiffness is E 23 A 23 , the line density is Connect to Satellite S 1 and S 3 The length of the flexible tether is L 31 , the stiffness is E 31 A 31 , the line density is Three spatially flexible tethers 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

No PUM Login to View More

Abstract

The invention belongs to the technical field of spacecraft flight, in particular to a modeling method for a space three-body flexible tethered satellite formation system under a non-inertial reference coordinate system. The steps of the modeling method are as follows: firstly, establish a satellite formation system model and a non-inertial reference frame fixed at the center of mass of the system; then, discretize the flexible tether connecting the satellites into several tether units No.; finally, the dynamic equation of the discrete unit particle in the non-inertial reference system is established, and then the dynamic equation of the satellite formation system is deduced. The present invention models in a non-inertial reference system, no longer needs to select redundant steps such as generalized coordinates and coordinate transformation, and at the same time considers the flexibility of space tethers, so it is useful in describing various spatial dynamic behaviors of the formation system and revealing the structure of the system. Faster and more accurate spin stabilization and destabilization behavior. In addition, the invention can also be extended to the modeling of four-body or multi-body space tether formation system, which has great practical value.

Description

technical field [0001] The invention relates to the technical field of spacecraft flight, in particular to a modeling method for a space three-body flexible tethered satellite formation system under a non-inertial reference coordinate system. Background technique [0002] As a new type of on-orbit spacecraft, the space tether satellite formation system has the advantages of wide observation range, high mobility, and reusability. Task [1-4] , and the modeling method of the formation system, as the key technical basis for realizing and completing these tasks, is receiving more and more attention from the majority of scientific researchers. [0003] In the developed space tethered satellite formation system modeling method, based on the second type of Lagrangian equation, Qi Rui et al. constructed the dynamic equation of the double pyramidal tethered satellite formation system, and deduced the formula to point out that There is an analytical static equilibrium solution for th...

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): G05D1/08
CPCB64G1/244
Inventor 余本嵩金栋平文浩耿凌璐
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