Aviation power generation system quantitative hazardness analysis method based on data transmission

Abstract

The invention provides an aviation power generation system quantitative hazardness analysis method based on data transmission, and belongs to the technical field of reliability engineering. The method comprises the steps that conventional layers of an aviation power generation system are divided; FMECA analysis is performed on electronic parts and components or mechanical parts and components on the lowest conventional layer; FMECA analysis is performed on all functional units on the functional unit level conventional layer; FMECA analysis is performed on components on the conventional layers above the functional unit level from the bottom to the top; final influence, severe degree level and fault influence probability of all the components on all the conventional layers are obtained via analysis from the top to the bottom; mode hazardous degree and product hazardous degree are calculated; and a hazardness matrix graph is drafted. Quantitative data are acquired to perform accurate quantitative CA analysis, and an inverted V-shaped FMECA analysis flow is provided so that analysis results are more accurate.

Description

technical field [0001] The invention provides a quantitative hazard analysis method for an aviation power generation system, which is used for quantitative hazard analysis of an electromechanical hybrid system containing inconsistent failure data information, and belongs to the technical field of reliability engineering. Background technique [0002] With the rapid development of modern high-tech and industrial construction, the complexity of aeronautical power generation systems continues to increase, and the requirements for their reliability are also getting higher and higher. The aviation power generation system is generally composed of a controller and a generator, and is a typical electromechanical hybrid system. During the mission of the aircraft, the power generation system is responsible for safely supplying power to the aircraft throughout the entire process. Once it fails, it is bound to have a major impact on the aircraft, and may even lead to a serious crash. ...

AI Technical Summary

Problems solved by technology

The results of quantitative analysis methods are more accurate, but only qualitative analysis methods can be used when the failure rate data cannot be obtained

At present, engineering can only accurately obtain the failure rate and failure mode frequency ratio of electronic components, and most circuits above the module level rely on experience to give relevant data, while for mechanical product failure data information is less, most engineering is based on experience. Qualitative analysis, so it is impossible to conduct a more accurate quantitative hazard analysis on the overall mechanical and electrical products

At present, there is no research and application report on the quantitative CA method considering the impact of product failure transmission relationship and data information inconsistency for aviation power generation systems at home and abroad.

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