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

Flexible satellite attitude control method based on three-stage path planning

A technology of path planning and satellite attitude, which is applied in attitude control, space navigation equipment, space navigation aircraft, etc., can solve problems such as the difficulty in designing attitude maneuver control laws, and achieve the effect of expanding the realization of rapid maneuvering

Inactive Publication Date: 2017-12-15
CHANGCHUN INST OF OPTICS FINE MECHANICS & PHYSICS CHINESE ACAD OF SCI
View PDF8 Cites 18 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At the same time, in the process of satellite attitude maneuvering, in addition to the vibration of the flexible attachment, it is also subject to many different constraints, such as the constraint on the angular velocity to ensure the effective work of the sensor, the torque output characteristics of the actuator, and the optimal maneuvering time. Limitations make the design of attitude maneuver control laws difficult and challenging

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
  • Flexible satellite attitude control method based on three-stage path planning
  • Flexible satellite attitude control method based on three-stage path planning
  • Flexible satellite attitude control method based on three-stage path planning

Examples

Experimental program
Comparison scheme
Effect test

specific Embodiment approach 1

[0024] Specific implementation mode 1. Combination Figure 1 to Figure 6 Describe this embodiment, a flexible and agile satellite attitude maneuver rolling optimization control method, the method is implemented by the following steps:

[0025] Step A: Set the reference reference coordinate system, establish the satellite attitude dynamics and kinematics equations with flexible attachments with the pyramid configuration CMG group as the actuator, and establish the vibration dynamics equation of the flexible attachments under the modal coordinate system; By defining new state variables, a nonlinear state-space equation for predicting future satellite attitude information is established;

[0026] Step B: According to the satellite attitude information measured at the current moment, the satellite attitude information in the predicted time domain is predicted through the discretized nonlinear state space equation, and the satellite attitude prediction output equation is establishe...

specific Embodiment approach 2

[0031] Specific embodiment two, combine Figure 1 to Figure 6 Describe this implementation mode, this implementation mode is an embodiment of a flexible and agile satellite attitude maneuver rolling optimization control method described in the first specific implementation mode, and its specific process is:

[0032] 1. Taking the inertial coordinate system as the reference coordinate system, the attitude dynamic equation is established as:

[0033]

[0034] In the formula, J s is the moment of inertia matrix of the satellite, w is the three-axis attitude angular velocity of the star, σ is the rigid-flexible coupling matrix between the flexible attachment and the star, η is the displacement of the flexible attachment in the modal coordinate system, H CMG is the triaxial angular momentum of the pyramid configuration CMG group, T d is the spatial disturbance moment. The control torque of the CMG group is where [w×] is expressed as:

[0035]

[0036] set theta x ,θ y...

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

Provided is a flexible satellite attitude control method based on three-stage path planning, relating to the technical field of satellite attitude control. A flexible satellites with pyramidal CMG group as the actuator is selected as the study object, a satellite attitude control method combing the three-stage attitude path planning and rolling optimization tracking is proposed, a nonlinear state-space equation including satellite attitude dynamics, kinematics and flexible attachment vibration is established for the accurate prediction of satellite attitude future information. Based on the three-stage path planning strategy, the flexible satellite attitude maneuvering time is optimally designed, the vibration of the flexible attachments can be avoided when the satellite attitude maneuvering target is completed. By means of the nonlinear model prediction method, the attitude angular velocity curve and attitude angle position curve obtained by planning are taken as the desired tracking targets to design the rolling optimization tracking control law of the frame angular velocity of the pyramidal CMG group, therefore, the attitude wide angle rapid maneuvering control for suppressing the vibration of the flexible attachments can be realized.

Description

technical field [0001] The invention relates to the technical field of satellite attitude control, in particular to a satellite attitude fast maneuvering control method, which is particularly suitable for the satellite attitude large-angle maneuvering control process with flexible accessories. Background technique [0002] In order to enhance the application efficiency of in-orbit satellites, one of the main technical approaches is to improve the rapid maneuverability of agile satellites and the high stability after maneuvering. The structure and configuration of in-orbit satellites are becoming increasingly complex and diverse, and the flexibility of the entire satellite is becoming more and more obvious. For example, installing large solar panels and antennas, etc., will not only affect the speed of maneuvering, but also affect the attitude stability after maneuvering. How to balance it The agility of satellite attitude control and the suppression of vibration of flexible ...

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): G05D1/08
CPCB64G1/244
Inventor 常琳范国伟徐伟杨秀彬王绍举王旻
Owner CHANGCHUN INST OF OPTICS FINE MECHANICS & PHYSICS CHINESE ACAD OF SCI
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