Fault dictionary based satellite fault diagnosis method

Abstract

The invention provides a fault dictionary based satellite fault diagnosis method. The method comprises steps as follows: inputting diagnosis knowledge rules of a satellite fault dictionary according to satellite design knowledge; adopting a classification mode to establish the fault dictionary; converting satellite telemetering data from original-code data into data with physical significance; performing satellite fault diagnosis according to the satellite telemetering data and the diagnosis knowledge rules, and storing and maintaining the fault dictionary; displaying and alarming according to a diagnosis result of the satellite fault diagnosis. The fault dictionary based satellite fault diagnosis method enhances knowledge representing capacity of a classic fault dictionary and has higher universality and expansibility; on the basis of a satellite state universalization representing method, the fault dictionary diagnosis method is adopted for satellite fault diagnosis, and normal rule dictionary databases of a satellite remote sensing grade, a single-computer grade, a subsystem grade and a whole-spacecraft grade as well as fault diagnosis dictionary databases of satellite fault pre-arranged plans can be established. The invention further designs a frame structure and a diagnosis process of the satellite fault diagnosis system based on the fault dictionary method.

Description

technical field [0001] The invention relates to satellite fault diagnosis, in particular to a satellite fault diagnosis method based on a fault dictionary. Background technique [0002] In order to improve the operational safety of spacecraft in orbit, various aerospace organizations and research institutions are investing a lot of manpower, financial and material resources in the development and related research of safe operation management, fault diagnosis and early warning system of spacecraft in orbit. [0003] The representation of satellite knowledge is a difficult point in fault diagnosis. In the past, most systems were based on the knowledge of a specific condition for fault diagnosis, which did not have versatility and scalability. The fault dictionary refers to extracting the characteristic signals of the system or equipment in various fault states, such as test point voltage or current signals, etc., and then listing the correspondence between the characteristic s...

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Problems solved by technology

[0004] At present, there is no description or report of the similar technology o...

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