Flight control system function fault analysis method based on use scene model

Abstract

The invention provides a flight control system function fault analysis method based on a use scene model, and the method comprises the following steps: S1, constructing a use scene model, and determining a corresponding relation between a use scene and an activity; s2, constructing a system function model, and determining a corresponding relationship between activities and functions and a system function architecture; s3, fault logic relation modeling: defining function, activity and scene fault states through model extension, and respectively establishing a function internal fault logic relation, a function fault-activity fault logic relation and an activity fault-scene fault logic relation; and S4, carrying out system function fault analysis based on the fault logic model, and determining a function fault or combination influencing the task. According to the method, the problem that a traditional function fault analysis method is inaccurate and incomplete is solved, and key function fault recognition influencing safety and tasks is automatically carried out through a fault rebroadcasting chain of function-activity-scene.

Description

technical field [0001] The invention belongs to the technical field of aviation system reliability, and in particular relates to a function failure analysis method of an flight control system based on a use scene model. Background technique [0002] With the continuous improvement of the level of aviation equipment, the functions and structures of the aviation system are becoming more and more complex, and the interaction and coupling between them are becoming more and more hidden, which leads to the increase of the possibility of system failure and the increasingly complicated way of failure. Traditional reliability analysis methods (such as FMEA, FTA, etc.) need to rely on manual deduction, and it is difficult to identify key functional failures that affect tasks, and the analysis results are not comprehensive and accurate. Model-Based Systems Engineering (MBSE) methods and techniques are gradually being popularized and applied in the development of complex aviation equipm...

AI Technical Summary

Problems solved by technology

[0004] In order to solve the above-mentioned deficiencies in the prior art, the purpose of the present invention is to propose a method for analyzing the functional failure of the flight control system based on the usage scenario model, and to provide a method for identifying the key functional failure status that affects the task during the reliability and safety analysis process. The method aims to solve the problems of multiple failure modes and complex failure impact relationships in complex systems, and can give accurate failure impact analysis results, so that the staff can clearly determine the failure status of key system functions that affect tasks and their impact consequences, and specify the failure status of the system. The Emphasis and Direction of Reliability Design

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