Hierarchical fusion diagnosis method and system for health parameters of complex spacecraft thermal control system

A thermal control system, health parameter technology, applied in the direction of instruments, electrical digital data processing, special data processing applications, etc., can solve the test process and data utilization, unpredictability of development and application process, affect the development progress and quality control of research and development and other problems, to achieve the effect of improving the system-level comprehensive diagnosis ability

Pending Publication Date: 2021-12-24
BEIJING INST OF SPACECRAFT SYST ENG
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Problems solved by technology

Most of the current fault monitoring and evaluation methods for the thermal control system of space stations can only perform post-analysis of shallow test data, and have not formed the ability to dig deep into the deep causality and logical relationships behind the data. For thermal vacuum and other The unified management and utilization of extreme test methods, te

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  • Hierarchical fusion diagnosis method and system for health parameters of complex spacecraft thermal control system
  • Hierarchical fusion diagnosis method and system for health parameters of complex spacecraft thermal control system
  • Hierarchical fusion diagnosis method and system for health parameters of complex spacecraft thermal control system

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Embodiment Construction

[0050] The present invention will be further described below in conjunction with the accompanying drawings and examples. It should be understood that the following examples are intended to facilitate the understanding of the present invention, and have no limiting effect on it. This embodiment takes a space station as an example.

[0051] Such as figure 1 As shown, the health parameter classification fusion diagnosis method of the thermal control system of the space station in this embodiment includes the following steps:

[0052] S1: Build a multi-level evaluation parameter model to monitor and jointly diagnose key indicator parameters from three aspects: key indicators of stand-alone design, stand-alone equipment health characterization, and system-level comprehensive state characterization. Such as figure 1 As shown, this embodiment takes the active thermal control system of the space station as an example, and decomposes the active thermal control system of the space sta...

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Abstract

The invention belongs to the technical field of spacecraft health diagnosis and analysis, and particularly relates to a health parameter hierarchical fusion diagnosis method and system for a complex spacecraft thermal control system. The diagnosis method comprises the following steps: constructing a multi-level evaluation parameter model of the thermal control system so as to carry out monitoring and combined diagnosis on key index parameters from three aspects of single-machine design key indexes, single-machine equipment health characterization and system-level comprehensive state characterization; designing a thermodynamic extreme working condition test data boundary model; constructing a single-index parameter long-term state monitoring curve analysis model and a single-index parameter feature model; a correlation feature model of multi-element index parameters in a space flight scene is constructed, and interpretation analysis and consistency comparison data are provided for multiple indexes, single-machine comprehensive states and system-level comprehensive states. According to the invention, the comprehensive credible evaluation of the associated core indexes in the single index-single machine-system level can be realized, and a discrimination method can be provided for intelligently recognizing the abnormal state in the flight scene.

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Application Information

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Owner BEIJING INST OF SPACECRAFT SYST ENG
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