Preset performance control method for libration point orbit rendezvous without initial error symbols

A technology with preset performance and orbital rendezvous, which is applied to space navigation equipment, motor vehicles, space navigation equipment, etc., and can solve the problem of not being able to provide speed measurement information

Active Publication Date: 2019-04-16
NORTHWESTERN POLYTECHNICAL UNIV
View PDF11 Cites 2 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] Aiming at the problem that the speed measurement sensor fails to provide speed measurement information in the orbital intersection of the translation point, and the preset performance control method needs to predict the cumbersome operation of the initial error sign, a new me

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
  • Preset performance control method for libration point orbit rendezvous without initial error symbols
  • Preset performance control method for libration point orbit rendezvous without initial error symbols
  • Preset performance control method for libration point orbit rendezvous without initial error symbols

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0078] Now in conjunction with embodiment, accompanying drawing, the present invention will be further described:

[0079] Based on a high-order integral chain observer and preset performance control, the present invention proposes an autonomous rendezvous control method of a translation point track that only requires relative position measurement information, and verifies the effectiveness of the proposed method by examples. The implementation of this invention mainly comprises following four steps:

[0080] Step 1: Establish a nonlinear translation point-orbit relative dynamics model

[0081] The circular restricted three-body problem describes two main celestial bodies P 1 ,P 2 Make a circular motion around their common center of mass, and analyze the third spacecraft P with negligible mass 3 Motion problems in this system. with P 1 ,P 2 The center of mass O is the origin, and the two main celestial bodies P 1 ,P 2 The connecting line of is the x-axis, the positive ...

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 relates to a preset performance control method for libration point orbit rendezvous without initial error symbols. The method comprises the steps of establishing a relative dynamic modelof a nonlinear libration point orbit, establishing a disturbance and uncertainty model and designing a three-order integral chain differentiator and a libration point orbit rendezvous preset performance control rule. The preset performance control method based on the three-order integral chain differentiator can ensure that the state of a rendezvous tail end system meets an actual preset performance requirement under the condition that disturbance and relative navigation errors exist and a thruster has a fault, that is to say, the safe and accurate rendezvous of a tracing spacecraft and a target spacecraft can be achieved, and a feasible control strategy is provided for future libration point orbit rendezvous tasks.

Description

technical field [0001] The invention belongs to the technical field of autonomous rendezvous of deep-space spacecraft, and relates to an autonomous control method for orbital rendezvous of a translation point based on a third-order integral chain differentiator with missing velocity information and unknown initial error sign of a controller. Background technique [0002] In recent years, with the deepening of research on the dynamic properties of translation points, translation point orbits have shown great application prospects. Countries around the world have launched and are planning multiple translation point observation platforms and manned space stations. The cost of these large spacecraft is high, and it will be too expensive to abandon them directly if they fail. Therefore, it is necessary to study the rendezvous and docking of the translation point orbiting spacecraft It is crucial for the interception, repair and rescue of spacecraft near the orbit of the translati...

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): B64G1/24
CPCB64G1/242
Inventor 罗建军郑丹丹殷泽阳党朝辉王明明马卫华
Owner NORTHWESTERN POLYTECHNICAL UNIV
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap