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Satellite health state multistage fuzzy evaluation method based on AHP-entropy weight method

A fuzzy evaluation method and health status technology, applied in the direction of fuzzy logic-based systems, instruments, electrical components, etc., can solve the problems that are easy to cause subjective assumptions, evaluate model weight parameters rely on subjective judgment and expert experience, and satellite high redundancy can be repeated structural characteristics and other issues, to overcome the impact of system health, make up for the lack of subjective factors, and solve the effect of complexity

Pending Publication Date: 2020-05-05
XI AN JIAOTONG UNIV
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Problems solved by technology

This kind of method does not reflect the satellite's high redundancy and reconfigurable characteristics, and the evaluation model weight parameters are too dependent on subjective judgment and expert experience, which is easy to cause subjective assumptions

Method used

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  • Satellite health state multistage fuzzy evaluation method based on AHP-entropy weight method
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  • Satellite health state multistage fuzzy evaluation method based on AHP-entropy weight method

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Embodiment Construction

[0078] see figure 1 , the satellite system has the characteristics of complexity, uncertainty, ambiguity, and hierarchy. Therefore, the present invention establishes a comprehensive evaluation index system of hierarchical structure, studies the problems existing in fuzzy comprehensive evaluation and hierarchical analysis, and proposes Based on the improved method, a multi-level fuzzy comprehensive evaluation method based on the combination of analytic hierarchy process and entropy weight method is proposed to comprehensively evaluate the use status of satellites in orbit.

[0079] see figure 2 , a kind of multilevel fuzzy evaluation method of satellite health state based on AHP-entropy weight method of the present invention, comprises the following steps:

[0080] S1. Construction of system weight system;

[0081] see image 3 The weight system of the construction system is divided into three parts: subjective weight construction, objective weight construction, and compreh...

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Abstract

The invention discloses a satellite health state multistage fuzzy evaluation method based on an AHP-entropy weight method. The method includes: constructing a system weight system comprising a subjective weight, an objective weight and a comprehensive weight, providing the accurate comprehensive weight for the fuzzy comprehensive evaluation method by adopting an analytic hierarchy process and an entropy weight method, providing the subjective weight by adopting the analytic hierarchy process, providing the objective weight by adopting the entropy weight method, and obtaining the subjective andobjective combined comprehensive weight from the subjective and objective weights through an optimization function; constructing a system evaluation system comprising a factor discourse domain, a comment set, a membership function, an evaluation matrix and multi-stage fuzzy evaluation; and comprehensively evaluating the use state of the on-orbit satellite, evaluating each layer of elements through a membership principle of fuzzy comprehensive evaluation, and then sequentially recursively evaluating the overall health state from bottom to top by adopting a multi-stage fuzzy comprehensive evaluation method. The method improves the safety and reliability of a satellite system, reduces the effective life cycle operation cost, and guarantees the smooth completion of an in-orbit satellite task.

Description

technical field [0001] The invention belongs to the technical field of on-orbit satellite use state health evaluation, and in particular relates to a multi-level fuzzy evaluation method for satellite health state based on the AHP-entropy weight method. Background technique [0002] Due to the complexity of the satellite system itself and the uncertainty of the outer space environment, it is difficult to ensure that the satellite does not have any failures during the service period, and the various subsystems of the satellite system are coupled. Once a component fails, It is likely to lead to the paralysis of this system, so the evaluation of satellite system health is becoming more and more important. Satellite system health evaluation is a powerful tool to reduce satellite operation failures and ensure satellite safe operation. Make a scientific assessment of the health degree, and then experts formulate a scientific and effective health management strategy for the satellit...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06Q10/06G06N7/02
CPCG06Q10/06393G06N7/02
Inventor 张超张越程吕刚明谭炜张海威许可
Owner XI AN JIAOTONG UNIV
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