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PMS (phased-mission system) reliability layering modeling method based on failure mechanism comprehensive damage accumulation rule

A technology of fault mechanism and modeling method, applied in the direction of electrical digital data processing, special data processing applications, instruments, etc., to achieve the effect of ensuring integrity and ensuring flexibility

Active Publication Date: 2018-02-23
BEIHANG UNIV
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Problems solved by technology

[0005] Through the search and novelty of existing technologies, no domestic scholars have proposed a reliability modeling method for multi-stage task systems from the perspective of fault mechanism damage accumulation

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  • PMS (phased-mission system) reliability layering modeling method based on failure mechanism comprehensive damage accumulation rule
  • PMS (phased-mission system) reliability layering modeling method based on failure mechanism comprehensive damage accumulation rule
  • PMS (phased-mission system) reliability layering modeling method based on failure mechanism comprehensive damage accumulation rule

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Embodiment Construction

[0071] Exemplary embodiments, features, and aspects of the present invention will be described in detail below with reference to the accompanying drawings. The same reference numbers in the figures indicate functionally identical or similar elements. While various aspects of the embodiments are shown in drawings, the drawings are not necessarily drawn to scale unless specifically indicated.

[0072] The invention provides a PMS reliability layered modeling method based on fault mechanism comprehensive damage accumulation rules. Attached below figure 1 The shown method flow process further describes the modeling method of the present invention:

[0073] Step 1: Clarify all the tasks that the system needs to perform and the specific stages of each task, analyze the components of the system under each task and stage, and clarify the key failure mechanism and damage between the failure mechanisms of each component in each task and stage Cumulative way. Specifically, firstly, a...

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Abstract

The invention provides a PMS (phased-mission system) reliability layering modeling method based on a failure mechanism comprehensive damage accumulation rule. The method comprises the following steps:S1, clarifying all the missions needing to be executed and the specific phases of each mission, analyzing component parts of the system under each mission and phase, and clarifying a damage accumulation mode between the key failure mechanism of each part in each mission and phase and the failure mechanism; S2, establishing a BDD model of a system failure mechanism layer according to the main failure mechanism of each working part as well as the type of each failure mechanism and the system structure; S3, establishing a BDD model of a system phase layer by utilizing the BDD model of the systemfailure mechanism layer obtained in the step S2; S4, further establishing a BDD model of a system mission layer for the phased-mission system; and S5, evaluating a reliability function when the phased-mission system executes the mission series. The models of all levels are combined and an integrated method is provided for reliability modeling of the phased-mission system.

Description

technical field [0001] The invention relates to the field of reliability modeling of multi-stage mission systems, in particular to a PMS (Phased-Mission System, multi-stage mission system) reliability layered modeling method based on fault mechanism comprehensive damage accumulation rules. Background technique [0002] The failure mechanism is to describe the root cause of product failure from the perspective of physics and chemistry, and is the most basic element of product failure. It is the latest direction in the field of reliability modeling to establish a reliability model with the failure mechanism as the underlying event and the relationship between the failure mechanism as the logical main line. This modeling idea uses the fault physical model to obtain basic data. The fault physical model can describe the relationship between the time and probability of product failure and the design parameters of the product and environmental conditions. In the case of insufficien...

Claims

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Application Information

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IPC IPC(8): G06F17/50
CPCG06F30/20
Inventor 陈颖李颖异王泽康锐
Owner BEIHANG UNIV
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