Spacecraft on-orbit health state evaluation method and system considering uncertain interference

A health status and spacecraft technology, applied in the aerospace field, can solve problems affecting practicality and applicability, without considering the calculation of health assessment indicators, etc., to achieve the effect of improving practicability, high precision, and high speed

Active Publication Date: 2020-02-21
BEIJING INST OF CONTROL ENG
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Problems solved by technology

[0005] (2) Calculation of health assessment indicators is not considered
The existing health assessment index algorithm has seriously affected the practicability and applicability, and it is necessary to carry out research on fast algorithms suitable for on-orbit health management

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  • Spacecraft on-orbit health state evaluation method and system considering uncertain interference
  • Spacecraft on-orbit health state evaluation method and system considering uncertain interference
  • Spacecraft on-orbit health state evaluation method and system considering uncertain interference

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Embodiment Construction

[0022] In order to make the object, technical solution and advantages of the present invention clearer, the embodiments disclosed in the present invention will be further described in detail below in conjunction with the accompanying drawings.

[0023] The invention discloses a spacecraft on-orbit health status evaluation method considering uncertain interference, and the health evaluation index is designed by comprehensively considering factors such as time constraints, mission requirements, and reliability decline caused by faults, and the fine integration idea is used to carry out the evaluation of the index. High-speed, high-precision, and high-stability calculations are achieved, thereby realizing rapid on-orbit assessment of the health status of the disturbed system.

[0024] Such as figure 1 , the spacecraft on-orbit health status assessment method considering uncertain interference, including:

[0025] Step 101, establishing a spacecraft failure model including distur...

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Abstract

The invention discloses a spacecraft on-orbit health state evaluation method and system considering uncertain interference. The method comprises the steps of establishing a spacecraft fault model containing interference and time constraints; analyzing the spacecraft fault model, and determining a reconfigurable evaluation index; determining a Riccati differential equation corresponding to the spacecraft fault model, and solving the Riccati differential equation to obtain a minimum value gamma<*> of a Riccati differential equation positive semidefinite matrix solution; and substituting the gamma<*> into the reconfigurable evaluation index, and solving the reconfigurable evaluation index to obtain a spacecraft on-orbit health state evaluation result. According to the method, the health assessment indexes are designed by comprehensively considering factors such as time constraint, task requirements and reliability reduction caused by faults, and high-speed, high-precision and high-stability calculation is performed on the indexes by utilizing a fine integration thought, so that on-orbit rapid assessment of the health state of the disturbed system is realized.

Description

technical field [0001] The invention belongs to the field of aerospace technology, and in particular relates to a method and system for assessing the health state of a spacecraft on orbit considering uncertain interference. Background technique [0002] In spacecraft health management, it is necessary to evaluate the health status of the control system to provide a basis for subsequent decision-making. Therefore, it is necessary for the health assessment index to reflect the real state of the system, and the algorithm should have the characteristics of fast speed and high precision to meet the needs of on-orbit health management. [0003] At present, the research on the health management of the spacecraft control system is still in its infancy, and the existing methods are not perfect, and there are mainly the following deficiencies: [0004] (1) The influence of space interference in the actual operation of the system is ignored. Spacecraft will inevitably be affected by ...

Claims

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Application Information

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IPC IPC(8): G06Q10/06G06F17/13G06F30/20
CPCG06Q10/06393G06F17/13
Inventor 刘成瑞屠园园刘细军徐赫屿高莉李文博刘文静段文杰
Owner BEIJING INST OF CONTROL ENG
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