Satellite health level evaluation method based on health state laminar flow logic model

Abstract

The invention discloses a satellite health level evaluation method based on a health state laminar flow logic model, and the method comprises the steps: building the health state laminar flow logic model which sequentially comprises a bottom single-machine level, a single-machine level, a subsystem level and a satellite level from the bottom to the top according to each task needing to be executedby a satellite; obtaining the task health degree of each underlying single machine in the health state laminar flow logic model according to underlying single machine telemetering parameters of the health state laminar flow logic model; sequentially determining task health degrees and risk health degrees of a single machine level, a subsystem level and a satellite level in the health state laminar flow logic model by utilizing the task health degree of each bottom single machine; and determining the task health degree and the risk health degree of the whole satellite according to all tasks needing to be executed by the satellite and the task health degree and the risk health degree of each satellite in the satellite hierarchy when the satellite executes each task.

Description

technical field [0001] The invention relates to the technical field of spacecraft, in particular to a satellite health level assessment method based on a laminar flow logic model of a health state. Background technique [0002] With the development of my country's spacecraft technology, the function and structure of satellites are becoming more and more perfect and complex, and they have incomparable advantages in the fields of reconnaissance, measurement, navigation, etc. The harshness of the environment makes it also highly risky, and the damage of a certain component may cause a chain reaction, leading to the failure or paralysis of the system or the entire satellite. However, satellites are expensive, and most of them are unique. Once a serious failure occurs, it may cause great losses. Therefore, high reliability requirements are also put forward for them. Due to the long operation time of the satellite and the complex structure of each system, the current research on s...

AI Technical Summary

Problems solved by technology

In this technology, the impact of different health state laminar flow logic models on the health state of the upper level is only considered from the component level to the component level, and the health degree calculation from the component level to the subsystem level and then to the system level adopts a weighted summation method , does not consider the impact of different structural models on the health of the upper layer, and the setting of the weight value only considers the impact of the health status of each layer unit on the health status of the upper layer, and does not specifically consider the degradation or failure of the constituent units. The ability to complete hierarchical tasks and the impact of risk consequences, it is impossible to formulate a clear maintenance support strategy based on the evaluation results of this technology

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