Cold standby system fault behavior modeling method based on SBDD (Shared Binary Decision Diagram) model

A system failure and modeling method technology, applied in special data processing applications, instruments, electrical digital data processing, etc., can solve problems such as inability to effectively evaluate cold storage component failures and cross-stage damage accumulation

Active Publication Date: 2018-03-06
BEIHANG UNIV
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Problems solved by technology

[0006] In order to overcome the defects of the prior art, the purpose of the present invention is to solve the problem that the existing modeling method cannot effectively evaluate the failure and cross-stage damage accumu...

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  • Cold standby system fault behavior modeling method based on SBDD (Shared Binary Decision Diagram) model
  • Cold standby system fault behavior modeling method based on SBDD (Shared Binary Decision Diagram) model
  • Cold standby system fault behavior modeling method based on SBDD (Shared Binary Decision Diagram) model

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[0056] 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.

[0057] The following embodiments use the SBDD model (continuous binary decision diagram model) to model the power supply subsystem of an avionics control device and perform MATLAB simulation analysis to reflect the beneficial effects of the present invention.

[0058] The present invention is a cold storage system fault behavior modeling method based on the SBDD model, and the specific implementation steps are as follows:

[0059] Step 1: Analyze and determine the key failure mechanism, failure mechanism type and related relationship of each component of the system.

[0060] The power s...

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Abstract

The invention provides a cold standby system fault behavior modeling method based on an SBDD (Shared Binary Decision Diagram) model. The method comprises the following steps that: S1: analyzing and determining the key fault mechanism, the fault mechanism type and the relevant relationship of each component of a system in a standby period and a work period: according to the stress environment of different stages, carrying out FMMEA (Failure Modes, Mechanisms, Effects Analysis) on each component of the system to determine the key fault mechanism, the fault mechanism type and the relevant relationship of each component of the system in the standby period and the work period; S2: independently establishing a fault mechanism BDD model for each component of the system in the standby period and the work period; S3: establishing the SBDD model for the system structure of the cold standby system; S4: carrying out fusion to obtain the SBDD model of the cold standby system fault behavior, replacing a unit which represents each component in the SBDD model of the system structure with the corresponding fault mechanism BDD model so as to obtain the SBDD model of the cold standby system fault behavior; and S5: carrying out simulation analysis on the SBDD model of the system fault behavior, and obtaining the reliability curve of the corresponding component or the cold standby system accordingto requirements.

Description

technical field [0001] The invention relates to the field of product reliability modeling, in particular to a cold storage system failure behavior modeling method based on a continuous binary decision diagram (SBDD) model. Background technique [0002] With the deepening understanding of reliability, users have put forward higher requirements for product reliability. In the current practical application of engineering, cold storage technology has become an effective means to improve system reliability due to its characteristics of low energy consumption, easy implementation and good effect, and has been widely used. The cold reserve system refers to a system that sets redundant components (that is, cold reserve components) for key parts of the system or components that are prone to failure to improve the reliability of the corresponding parts. When the initial part works normally, the cold reserve part is not connected to the working stress and is in the reserve period; whe...

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Application Information

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IPC IPC(8): G06F17/50
Inventor 陈颖王泽李颖异康锐
Owner BEIHANG UNIV
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