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

A Robust Adaptive Multi-level Cooperative Method for Spacecraft Three-superior Control

A robust self-adaptive, spacecraft technology, applied in the direction of aerospace vehicles, aerospace vehicle guidance devices, instruments, etc., can solve the problems of unable to guarantee the rapid convergence of state quantities and increase energy consumption, so as to facilitate engineering application and promotion , Realize the effect of restraint and strong engineering realizability

Active Publication Date: 2021-12-07
BEIJING INST OF CONTROL ENG
View PDF4 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The simple PID control algorithm can only achieve gradual stability of the system, and cannot guarantee the rapidity of state quantity convergence; adding feedforward control can increase the speed of attitude tracking error convergence, but it will additionally arouse the vibration of the flexible attachment, which requires active pointing In the control of the ultra-quiet platform, further feedback control is performed on this part of the vibration to increase additional energy consumption

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
  • A Robust Adaptive Multi-level Cooperative Method for Spacecraft Three-superior Control
  • A Robust Adaptive Multi-level Cooperative Method for Spacecraft Three-superior Control
  • A Robust Adaptive Multi-level Cooperative Method for Spacecraft Three-superior Control

Examples

Experimental program
Comparison scheme
Effect test

Embodiment

[0146]Since 02 = 2,k 3 =0.8 / 2, p=0.5, adaptive rate parameter Γ=1×10 1 , so that the control bandwidth of the system entering the boundary layer δ is less than 1 / 10 of the bandwidth of the load controller, and the damping ratio of the system is about 2, which can ensure that the system is always fully stable during the tracking control process, and there is no overshoot during the tracking process. Tune.

[0147] The star controller and load controller are used to control the multi-level cooperative attitude of the spacecraft, and the steady-state response of the load after the spacecraft maneuvers 30deg is investigated. Figure 3 ~ Figure 6 The attitude control results of the load in the whole 0-200s under the condition of not using and using multi-level cooperative control are given respectively. After statistics, it is found that the convergence time of load attitude before applying multi-level cooperative control is about 100s, and the three-axis attitude accuracy is 1.1...

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 robust self-adaptive multi-level coordination method for three-superior control of a spacecraft is suitable for large-scale satellite platforms such as astronomical observations that have ultra-high precision, ultra-high stability, and ultra-high agility for payload attitude. Different from the traditional PID control algorithm, the present invention combines the robustness of sliding mode control on the sliding surface and the feature of online parameter estimation of adaptive control to perform two-stage composite control of star-active pointing ultra-quiet platform. The idea of ​​multi-level cooperative control is as follows: 1) install an active pointing ultra-stationary platform between the payload and the spacecraft body, and design the control parameters of the active pointing ultra-stationary platform according to the quality characteristics of the spacecraft body and the payload; 2) combine sliding mode control and The idea of ​​adaptive control is to design a star robust adaptive controller considering bandwidth constraints, so that the star controller can match with the active pointing ultra-quiet platform, and realize the three-super control of the load.

Description

technical field [0001] The invention belongs to the field of spacecraft attitude control, and relates to a multi-stage cooperative control method for a large spacecraft system. Background technique [0002] With the increasing demand for astronomical observation and on-orbit services, the design ideas and practices of contemporary large-scale satellite platforms have undergone revolutionary changes, the complexity of satellite control systems has continued to increase, and the attitude accuracy and stability requirements of satellite payloads are also moving towards individual Therefore, it is necessary to carry out research on new control methods with three-super performance for a class of large-scale satellite platforms to meet the attitude requirements of various payloads in the future. Three Super refers to "ultra-high precision, ultra-high stability, and ultra-agility". [0003] In the current traditional spacecraft control system, there is often a rigid connection bet...

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): B64G1/24B64G1/10G06F30/15G06F30/20G06F119/14
CPCB64G1/10B64G1/244G06F30/15G06F30/20G06F2119/14
Inventor 姚宁袁利汤亮关新王有懿宗红郭子熙张科备郝仁剑冯骁刘昊龚立纲
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