Heuristic spacecraft mission planning method based on timeline state road signs

A technology for mission planning and spacecraft, applied in the aerospace field, can solve problems such as low planning efficiency, and achieve the effect of reducing planning nodes, reducing search space, and improving solution efficiency

Active Publication Date: 2021-01-19
BEIJING INSTITUTE OF TECHNOLOGYGY
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Problems solved by technology

[0006] In order to solve the problem of low planning efficiency caused by planning operations, the technical problem to be solved by the heuristic spacecraft mission planning method based on timeline state signposts disclosed in the present invention is: to improve the problem solving speed in spacecraft mission planning, in a shorter time Obtain a reasonable planning solution within a short time, and ensure the success rate of spacecraft mission execution by improving planning efficiency

Method used

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  • Heuristic spacecraft mission planning method based on timeline state road signs
  • Heuristic spacecraft mission planning method based on timeline state road signs

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Embodiment 1

[0041] Such as figure 1 As shown, the heuristic spacecraft mission planning method based on the timeline state signpost disclosed in this embodiment, the specific implementation steps are as follows:

[0042] Step 1: Comprehensively consider the four factors of spacecraft structure, mission requirements, equipment status, and spacecraft capabilities, and make constraints on the spacecraft's composition, resources, subsystem functions, and constraints (causal constraints, time constraints, and resource constraints).

[0043] Aiming at the complex function of the spacecraft system and the coupling of system constraints, the timeline is used to describe the multiple parallel subsystems of the spacecraft, and the complex constraints and inter-system dependencies are described through the timeline structure and coupling state information to form a timeline description model , to describe the evolution of the behavior of each parallel subsystem over time. The subsystems specificall...

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Abstract

The invention discloses a heuristic spacecraft mission planning method based on a timeline state road sign, and belongs to the technical field of aerospace. The implementation method comprises the steps that according to the internal constraint characteristics of subsystems, four factors including the spacecraft structure, the task requirement, the equipment state and the spacecraft capacity are comprehensively considered, and the composition, resources, subsystem functions and various constraint conditions needing to be met of the spacecraft are described. Aiming at the characteristic of complex constraint of a spacecraft system, a state evaluation graph is established by utilizing a constraint relationship between states. Meanwhile, a state road sign set is obtained according to the state evaluation diagram, heuristic information is constructed, a planning search direction is guided according to a heuristic sorting result, and a final heuristic spacecraft task planning solving resultbased on the timeline state road sign is output, so that spacecraft task planning is completed, the search space is reduced, and the task planning efficiency is improved; and the success rate of spacecraft task execution is ensured.

Description

technical field [0001] The invention relates to a spacecraft mission planning method, in particular to a heuristic spacecraft mission planning method based on a timeline state signpost, and belongs to the technical field of aerospace. Background technique [0002] The aerospace field is one of the main fields of world technological development in the 21st century. Due to the characteristics of spacecraft in space missions, such as being far away from the earth, long flight time, and uncertain environment, there are great challenges in the operation and control of spacecraft, such as long-term communication delays, long-term reliability issues, Real-time operational issues, etc. [0003] During the in-orbit operation of a spacecraft, it is necessary to have the ability to plan a series of scientific objectives, that is, to use intelligent planning technology to plan a number of optional activities and their Constraints are reasoned to generate an ordered set of activity seq...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G05D1/08
CPCG05D1/0833
Inventor 徐瑞金颢崔平远朱圣英梁子璇李朝玉尚海滨
Owner BEIJING INSTITUTE OF TECHNOLOGYGY
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