Spacecraft high-precision angular motion measuring method based on rotor-type gyroscope biorthogonal configuration

A measurement method and technology of spacecraft, applied in directions such as integrated navigators, to achieve the effects of avoiding system noise, high-precision and high-dynamic measurement, and overcoming the contradiction between measurement accuracy and dynamic range

Inactive Publication Date: 2018-12-18
任元 +1
View PDF4 Cites 3 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although this method can improve the measurement or estimation accuracy of the attitude angular rate to a certain extent, there is inevitably a prominent contradiction between the detection accuracy and the detection dynamic range.

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
  • Spacecraft high-precision angular motion measuring method based on rotor-type gyroscope biorthogonal configuration
  • Spacecraft high-precision angular motion measuring method based on rotor-type gyroscope biorthogonal configuration
  • Spacecraft high-precision angular motion measuring method based on rotor-type gyroscope biorthogonal configuration

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0032] Specific implementation plan

[0033] The specific embodiments of the present invention are as figure 1 As shown, the specific implementation steps are as follows:

[0034] (1) Establish a dynamic model of a single gyro rotor in orbit

[0035] Such as figure 2 Shown, G 1 , G 2 , G 3 , G 4 4 rotor gyros, divided into two groups, G 1 And G 2 One set, G 3 And G 4 One group, the straight lines where the rotation axis of the two gyroscopes in each group point nominally are perpendicular to each other and coplanar in space; G between the two groups 1 And G 3 The two top rotating shafts are collinear in the straight line where they are nominally pointed, and the G between the two groups 2 And G 4 The straight lines where the nominal points of the two tops are located are also collinear, forming a "cross" configuration. Obviously this is a special form of the biorthogonal configuration; X b Y b Z b Is the satellite body coordinate system, G 1 And G 3 The nominal direction of the angu...

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 spacecraft high-precision angular motion measuring method based on rotor-type gyroscope biorthogonal configuration, and belongs to the technical filed of inertial navigation. An analytic relation including the posture angular rate and angular acceleration information of a spacecraft is obtained by utilizing resultant external moment radially borne by a gyroscope rotor, under the situation that an inertial coupling item and a cross coupling item caused by spacecraft angular motion are not neglected, the inertial coupling item and the cross coupling item are eliminatedthrough information fusion operation of a plurality of gyroscopes in the biorthogonal configuration, and thus the analytic relation including the angular rate and the angular acceleration of the spacecraft is obtained in a combined mode. Due to the fact that the inertial coupling item and the cross coupling item are reserved, the measuring precision of the spacecraft high-precision angular motionmeasuring method only depends on a gyroscope error and a configuration mounting error and is not lowered with increasing of the dynamic range of the spacecraft. According to the spacecraft high-precision angular motion measuring method, the prominent contradiction between the measuring precision and the dynamic range in a traditional posture angular rate and angular acceleration measuring methodis effectively overcome. The spacecraft high-precision angular motion measuring method can be applied to high-precision and high-bandwidth measuring of the angular rate and the angular acceleration ofthe spacecraft.

Description

Technical field [0001] The invention relates to a spacecraft high-precision angular motion measurement method based on a rotor-type gyro biorthogonal configuration, which is suitable for the occasion where the rotor-type gyro configuration is used as the spacecraft attitude angle motion information measurement. technical background [0002] Rotor gyroscopes mainly include flexible gyroscopes, maglev gyroscopes, liquid float gyroscopes, electrostatic gyroscopes, three-float gyroscopes, and two-float gyroscopes. Because of their high measurement accuracy, they are the first choice for current high-precision inertial navigation systems. Rotor-type gyroscopes usually have one or two degrees of freedom angular rate sensitivity. Using three gyroscopes to be installed orthogonally to each other to achieve spacecraft three-axis attitude angular rate measurement is a common installation method for inertial navigation systems. In this installation method and solution method, in order to ac...

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): G01C21/24
CPCG01C21/24
Inventor 陈晓岑任元樊亚洪王丽芬蔡远文王卫杰陈琳琳吴昊满万鑫
Owner 任元
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