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On-orbit guidance avoidance control integrated algorithm for spacecraft

A spacecraft and algorithm technology, applied in the field of spacecraft on-orbit evasion guidance control integrated algorithm

Active Publication Date: 2016-09-21
NORTHWESTERN POLYTECHNICAL UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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  • On-orbit guidance avoidance control integrated algorithm for spacecraft
  • On-orbit guidance avoidance control integrated algorithm for spacecraft
  • On-orbit guidance avoidance control integrated algorithm for spacecraft

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Embodiment Construction

[0054] The present invention is described in further detail below in conjunction with accompanying drawing:

[0055] see Figure 1-Figure 3 , the spacecraft on-orbit avoidance guidance control integrated algorithm of the present invention comprises the following steps:

[0056] 1) Establish the relative motion equation of the spacecraft

[0057] Taking the target orbital coordinate system as the reference coordinate system, the relative motion dynamic equation of the spacecraft is established:

[0058] x ·· = A x · + D x + u + d - - - ( 1 )

[0059] The matrices A and D are described as:

[0060] A = 0 2 ...

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Abstract

The invention discloses an on-orbit guidance avoidance control integrated algorithm for a spacecraft. The on-orbit guidance avoidance control integrated algorithm includes the steps: establishing a relative movement model; designing a potential function and a sliding-mode control guidance control integrated algorithm; analyzing the robustness of the algorithm, and providing a safety orbit space; and finally verifying the effectiveness of the on-orbit guidance avoidance control integrated algorithm for a spacecraft through a simulation example. The on-orbit guidance avoidance control integrated algorithm for a spacecraft analyzes the safety section of the safety orbit under a disturbed condition, can quickly perform on-orbit calculation and control the spacecraft to perform real-time obstacle avoidance, can guarantee that the spacecraft can avoid the obstacle in the safety range, and is conductive to a spacecraft to more reliably perform an on-orbit flight task in the future.

Description

【Technical field】 [0001] The invention belongs to the technical field of spacecraft control, and relates to an integrated algorithm of spacecraft on-orbit avoidance guidance and control. 【Background technique】 [0002] With the continuous improvement of space research, development and application capabilities, countries have successively developed and launched a large number of spacecraft for various mission requirements, from initial space entry and space utilization to space operations and space applications. The autonomy and safety of space operations are gradually being paid attention to by people. [0003] In recent years, the artificial potential function (APF) method has been used more and more in the safe trajectory guidance of spacecraft. It was originally proposed by Khatib in "Real-Time Obstacle Avoidance for Manipulator and Mobile Robots" to solve the path planning problem of the manipulator in the operation space. Use the search potential function to find the ...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G05B13/04G05D1/10
CPCG05B13/042G05D1/101
Inventor 罗建军高登巍袁建平朱战霞马卫华王明明
Owner NORTHWESTERN POLYTECHNICAL UNIV