Method for achieving satellite three-axis stable control through single control moment gyroscope and two flywheels

A technology for controlling torque gyro and three-axis stabilization, applied in the field of satellite attitude control, can solve the problem of inability to accurately output command torque, etc., and achieve the effect of attitude stability control

Active Publication Date: 2020-01-17
SHANGHAI AEROSPACE CONTROL TECH INST
View PDF5 Cites 3 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] Since the control moment gyro is realized by changing the output direction of angular momentum, when only one control moment gyro is working normally on the star, when the control moment gyro outputs the torque in the X direction, it will also generate torque in the Z direction, and the two directions The torque ratio generated is related to the current angular position of the frame, so the required command torque cannot be accurately output

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
  • Method for achieving satellite three-axis stable control through single control moment gyroscope and two flywheels
  • Method for achieving satellite three-axis stable control through single control moment gyroscope and two flywheels
  • Method for achieving satellite three-axis stable control through single control moment gyroscope and two flywheels

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0043] The present invention proposes a system control method in the case of failure of multiple actuators for satellites using flywheels and control moment gyroscopes ("CMG" for short) as the main actuators for attitude control; there is only one control moment gyroscope on the satellite. And under the effective situation of two reaction flywheels, the present invention can realize attitude stability control.

[0044] against figure 1 , figure 2 As shown in the effective actuator configuration satellite, the following control method is proposed. image 3 It is a schematic diagram of the installation of the control moment gyro relative to the satellite body, O G x G Y G Z G The definition of is as follows: the origin is the geometric center of the control torque gyroscope, Z G The axis is the angular momentum output direction of the inner rotor when the frame angle is 0°, Y G Axis is the forward rotation direction of the outer frame, XG The axes are determined by the r...

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 method for achieving satellite three-axis stable control through a single control moment gyroscope and two flywheels. A ground measurement and control station remotely controls a satellite to control the attitude through a thruster. Angular momentum corresponding to the rotating speed of the CMG inner rotor is obtained according to the rotating speed instruction of the CMG inner rotor; a magnetic unloading target angular momentum is set according to the CMG outer frame position and the effective rotating speed instructions of the two flywheels; a changed angular momentum control instruction is calculated according to the instruction torque, the CMG frame angular position, the frame rotating speed, the system control period, the effective angular momentum controlinstructions of the two flywheels and the like, and the CMG frame angle is resolved: allowing single CMG control, selecting single CMG access, effectively connecting the two flywheels, and controllingthe satellite attitude by using the flywheels. For satellites adopting flywheels and control moment gyroscopes as attitude control main actuating mechanisms, stable attitude control can be realized under the condition that only one control moment gyroscope and two reaction flywheels are effective on the satellite.

Description

technical field [0001] The invention belongs to satellite attitude control technology, relates to the satellite attitude control technology of "flywheel + control torque gyroscope" combined executive mechanism, in particular to a method for realizing satellite three-axis stable control through a single control moment gyroscope and two flywheels. Background technique [0002] Manipulation laws represent the distribution or solution of control torque commands. Since the torque output of the reaction flywheel is generated by the change of angular momentum, its manipulation method is relatively simple. For the control moment gyroscope, its steering law needs to be designed according to different requirements. [0003] Because the control moment gyro is realized by changing the output direction of angular momentum, when only one control moment gyro is working normally on the star, the control moment gyro will generate torque in the Z direction while outputting the torque in the ...

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): B64G1/28B64G1/24
CPCB64G1/286B64G1/28B64G1/245
Inventor 刘德庆吴德安张涛张增安高四宏周胜良
Owner SHANGHAI AEROSPACE CONTROL TECH INST
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