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

An Attitude Control Method for In-motion Imaging Satellite Based on Incremental Drift Angle

An attitude control and imaging satellite technology, applied in the field of satellite attitude control, can solve the problems that the satellite does not consider the roll and pitch angular velocity, and cannot meet the imaging requirements in motion.

Active Publication Date: 2016-06-01
BEIJING INST OF CONTROL ENG
View PDF5 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Traditional satellites only involve imaging when the attitude is stable, and the influence of roll and pitch angular velocity on the control is not considered in the yaw axis control process of the satellite, so it can no longer meet the higher imaging requirements in motion

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
  • An Attitude Control Method for In-motion Imaging Satellite Based on Incremental Drift Angle
  • An Attitude Control Method for In-motion Imaging Satellite Based on Incremental Drift Angle
  • An Attitude Control Method for In-motion Imaging Satellite Based on Incremental Drift Angle

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0023] like figure 1 Shown, the inventive method mainly comprises the following steps:

[0024] (1) During the imaging process of the satellite in motion, it is assumed that the rolling target attitude angle of the satellite at the current moment is φ r , Pitch target angle θ r and yaw target attitude angle ψ r , to establish a reference attitude coordinate system. Among them, the conversion matrix between the reference attitude coordinate system and the orbit coordinate system is C RO to represent, among them

[0025] C R O = cosψ r cosθ r cosψ r sinθ 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

A moving imaging satellite attitude control method based on an incremental type drift angle is suitable for an attitude control process when initiative angular speeds of rotation exist in three axes in a satellite imaging process. All traditional satellite imaging satellite attitude control methods are only suitable for the situation that satellite rolling and pitch attitudes are close to zero. According to the method, when the drift angle is obtained, the current target attitude of a satellite is selected as the reference standard, an increment of the drift angle is obtained firstly in an obtaining process of the drift angle, the increment is formed relative to the drift angle of the satellite at the current moment, an updated reference attitude matrix serves as a target attitude matrix during attitude control, and therefore the satellite attitude can follow the target attitude. The method can not only meet the requirement for satellite attitude control of moving imaging but also be used for attitude control in an imaging process of the traditional satellite, so that satellite attitude control is more flexible.

Description

technical field [0001] The invention belongs to the field of satellite attitude control and relates to an attitude control method of an imaging satellite. Background technique [0002] Generally, when an earth observation satellite is imaging, its roll and pitch attitudes are in a stable state, that is, the angular velocity of the roll and pitch attitudes is close to zero. The satellite relies on the orbital speed to achieve push-broom for ground targets. direction parallel. In order to improve the imaging efficiency of satellites, or to achieve strip pushbrooms that are not parallel to the flight direction of satellites, satellites have gradually developed an imaging mode in motion. In the process of imaging in motion, the satellite will have an active push-broom angular velocity. At this time, the angular velocity of the satellite's roll and pitch attitude is no longer zero, and will change with time. [0003] When the satellite is imaging, it is necessary to correct 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 Patents(China)
IPC IPC(8): G05B17/00
Inventor 田科丰雷拥军宗红姚宁何海锋朱琦吕高见傅秀涛綦艳霞潘立鑫李晶心
Owner BEIJING INST OF CONTROL ENG
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