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Complex aerospace system fault mode identification method based on correlation fault analysis

A failure mode and failure analysis technology, applied in character and pattern recognition, instruments, data processing applications, etc., can solve problems such as difficult to fully determine and different failure effects, and achieve the effect of reducing mission risk

Pending Publication Date: 2022-01-18
BEIJING INST OF SPACECRAFT ENVIRONMENT ENG
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Problems solved by technology

However, in the development process of aerospace products, it is difficult to fully determine the FTA top event, and in the flight mission, with the dynamic changes of flight time and space, the impact of the fault is also different

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  • Complex aerospace system fault mode identification method based on correlation fault analysis

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Embodiment Construction

[0022] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some, not all, embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without creative efforts fall within the protection scope of the present invention.

[0023] see figure 1 , the present invention provides a technical solution:

[0024] A method for identifying fault patterns of complex aerospace systems based on correlation fault analysis, comprising the following steps:

[0025] S1: Along the mission profile of the spacecraft on-orbit, identify system-level unexpected events that affect business continuity and system security, take the spacecraft system-level unexpected event as the top event, and establish a sy...

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Abstract

The invention discloses a complex aerospace system fault mode identification method based on correlation fault analysis, and the method comprises the following steps: S1, recognizing system-level unexpected events which affect service continuity and system safety along an on-orbit flight mission profile of a spacecraft, taking the system-level unexpected events of the spacecraft as top events, according to a specified analysis method, establishing a system-level fault tree; S2, determining whether the number of fault trees is consistent with the number of unexpected events; and S3, analyzing the influence from other systems / devices and among subsystems / devices and the external environment. According to the method, the system-level unexpected event is taken as the top event, and weak links influencing the service continuity and system safety of the spacecraft are identified by analyzing the correlation influence of organic, electric, thermal and other design interface relationships with fault equipment or potential action forms such as substance exchange and motion interference, so that the task risk is reduced.

Description

technical field [0001] The invention relates to the technical field of overall design of aerospace products, in particular to a fault pattern recognition method for complex aerospace systems based on correlation fault analysis. Background technique [0002] With the rapid development of my country's aerospace industry, especially the implementation of high-intensity spacecraft development and high-density launch tasks in recent years, it is necessary to conduct in-depth research on the technical characteristics and risk points of aerospace products. In order to avoid the failure of space missions and economic losses, improve the autonomous on-orbit operation capability of spacecraft, and ensure the reliability and stability of spacecraft operation. [0003] Complex aerospace products are usually the crystallization of multi-disciplinary and multi-professional technical achievements. There is a high degree of integration between disciplines, and the technical characteristics ...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06K9/62G06Q10/00G06Q50/30
CPCG06Q10/20G06F18/24323G06Q50/40
Inventor 张笃周冶元菲刘守文于文考尚永红张健张景川吴东亮秦家勇
Owner BEIJING INST OF SPACECRAFT ENVIRONMENT ENG