A Multi-strategy Fault Diagnosis System for Launch Vehicle Test and Launch Process

Abstract

The invention provides a multi-strategy fault diagnosis system for the carrier rocket test launching process. The multi-strategy fault diagnosis system comprises a data reception and processing module, a fault detection module, a fault locating module, a rule algorithm plug-in, a fault tree algorithm plug-in, a mathematic model algorithm plug-in and a fault criteria storage module. A general carrier rocket fault diagnosis and reasoning framework is established to enable object information and diagnosis strategy to be separated, thereby realizing universal service between data acquisition, data processing and fault diagnosis, providing general basis for concrete applications of different diagnosis and reasoning methods and improving system diagnosis capability.

Description

technical field [0001] A multi-strategy fault diagnosis system proposed by the present invention is mainly applied in the test and launch process of carrier rockets. Background technique [0002] The existing launch vehicle fault diagnosis technology generally adopts upper and lower limit interpretation, expert knowledge reasoning and other methods, the types of faults that can be diagnosed are very limited, it is difficult to expand, and the workload of formulating criteria and writing rules is heavy. [0003] At this stage, the fault diagnosis technology has been applied in the engineering application of the Long March 3A series of launch vehicles, but the system only adopts the diagnostic reasoning method based on the expert system, and its diagnostic ability is limited to the known fault modes. In the process, it was also gradually exposed that some faults could not be detected and diagnosed due to the limitations of the diagnostic reasoning method. Therefore, it is nece...

AI Technical Summary

Problems solved by technology

[0006] The technical solution problem of the present invention is: overcome the deficiency of existing single fault diagnosis method, provide a kind of general system of fault diagnosis of multiple diagnostic strategies that can be used, solve the problem that single diagnosis method cannot meet the problem of launch vehicle fault diagnosis, improve the fault diagnostic ability

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