A Fault Mode and Effect Analysis Method Based on Accident Dynamic Deduction Simulation

A technology of failure mode and impact analysis, applied in design optimization/simulation, special data processing applications, etc., can solve problems such as inability to perform temporal logic, failure, analysis and combination functions, so as to facilitate the discovery and troubleshooting of system failures and reduce usage. Threshold, analysis results are true and accurate

Active Publication Date: 2021-07-16
CHINA AERO POLYTECH ESTAB
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Problems solved by technology

It solves the problem that the traditional failure mode and effect analysis method cannot perform temporal logic analysis and combined function failure analysis

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  • A Fault Mode and Effect Analysis Method Based on Accident Dynamic Deduction Simulation
  • A Fault Mode and Effect Analysis Method Based on Accident Dynamic Deduction Simulation
  • A Fault Mode and Effect Analysis Method Based on Accident Dynamic Deduction Simulation

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Embodiment Construction

[0080] The technical solution of the present invention will be further described in detail and in-depth with reference to the drawings and embodiments below. Taking the aircraft elevator system as an example, the failure mode and impact analysis based on accident dynamic deduction simulation is carried out. The steps are as follows:

[0081] Step 1. According to the product agreement, product requirements and design documents of the analyzed object, describe the composition and function of the analyzed object. The analysis object is decomposed layer by layer, and decomposed to the lowest agreed level according to the needs of failure mode and effect analysis;

[0082] The composition and function of the system are described as follows: the elevator system is a single-beam box-type thin-walled structure, and a double-closed chamber section structure composed of beams, small beams, ribs, and skins. In order to ensure that the operation of the elevator system is required by the ...

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Abstract

The present invention is a failure mode and impact analysis method based on accident dynamic deduction simulation. According to the characteristics of the analyzed object, the method constructs the functional block of each module at the lowest agreed level, and constructs a functional block diagram, which is different from the traditional functional modules. Different from adding failure rate and performing reliability analysis, the method of the present invention constructs an accident dynamic deduction simulation model including elements such as state and event for each functional block, and adds delay and failure rate to the events in the model and other attributes, realistically describe the internal operating mechanism of the functional module. Then, by constructing the logic and time relationship among the functional blocks, all the functional blocks are connected into a whole. Finally, through the discrete event dynamic simulation method, the dynamic operation process of the system is simulated, the failure events and their occurrence probability are found out, and further failure impact and hazard analysis are done. It solves the problem that the traditional failure mode and effect analysis method cannot perform temporal logic analysis and combined function failure analysis.

Description

technical field [0001] The invention relates to a failure mode and impact analysis method based on accident dynamic deduction and simulation, and belongs to the technical field of reliability analysis of complex systems. Background technique [0002] Failure Mode and Effects Analysis (Failure Mode and Effects Analysis) is an analysis technology based on failure mode and aimed at failure effects or consequences, which is summarized in engineering practice. It comprehensively identifies weak links and key items in the design by analyzing the impact of different failures of each component on the system work one by one, and provides basic information for evaluating and improving the reliability of the system design. [0003] The method of failure mode and effects analysis is widely used in the field of reliability analysis of complex systems. Traditional failure mode and effect analysis takes a single independent function as the starting point. During the analysis, more conside...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G06F30/20
CPCG06F30/20
Inventor 周汉清吕海熊王智浩黄燕冰江志炜李瑜
Owner CHINA AERO POLYTECH ESTAB
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