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Multi-state isolation effect modeling method based on layered MMDD and MDD

A technology of isolation effect and modeling method, applied in special data processing applications, design optimization/simulation, calculation, etc., can solve the problem of constant development speed of failure mechanism, and achieve the effect of reducing the difficulty of Boolean operations

Pending Publication Date: 2022-06-24
CHINA NUCLEAR POWER OPERATION TECH
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  • Abstract
  • Description
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Problems solved by technology

[0022] (3) A part cannot be both a physically triggering part and a physically related part
[0023] (4) The development speed of the failure mechanism is constant at a constant stress level, and the damage caused by the failure mechanism is linearly accumulated
[0024] No scholars at home and abroad have proposed a reliability modeling method for the isolation effect of multi-state systems by searching and checking the existing technologies

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  • Multi-state isolation effect modeling method based on layered MMDD and MDD
  • Multi-state isolation effect modeling method based on layered MMDD and MDD
  • Multi-state isolation effect modeling method based on layered MMDD and MDD

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Embodiment Construction

[0070] The present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments.

[0071] The present invention provides a multi-state isolation effect modeling method based on hierarchical MMDD and MDD, comprising the following steps:

[0072] Step 1: Establish system structure MMDD model

[0073] On the basis of analyzing the functional structure of the system, determine the functional correlation, analyze the impact of components on the environment, determine the relationship between the component state and the system state, establish a multi-state fault tree model (MFT), and finally generate the MMDD model of each state of the system;

[0074] Specifically include the following steps:

[0075] (1) Analyze the functional structure of the system and clarify the various states of the system;

[0076] (2) According to the analyzed system function structure, determine the system function correlation FDEP;

[0077] (...

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Abstract

The invention discloses a multi-state isolation effect modeling method based on layered MMDD and MDD. The multi-state isolation effect modeling method comprises the following steps: step 1, establishing a system structure MMDD model; 2, establishing a component MDD model; and step 3, establishing a final MMDD model of the system. The method has the beneficial effects that the influence of a physical isolation effect on a process of degrading a fault mechanism to different states is discussed, and a corresponding state probability function is deduced; according to a probability fault physics method, the service life distribution of each mechanism is obtained, and the problem that a traditional mathematical statistics-based method is difficult to obtain the service life data of the components considering the isolation effect and the fault mechanisms is effectively avoided.

Description

technical field [0001] The invention belongs to the field of system modeling of isolation effects, and in particular relates to a multi-state system isolation effect modeling method based on hierarchical MMDD and MDD. Background technique [0002] In engineering practice, it is difficult for many components or subsystems to complete their functions independently, but requires the cooperation of other components to realize the functions specified by the system, which causes a phenomenon: one component (related components) realizes its specified functions. Functions need to depend on other components (trigger components) to work properly, and the relationship between such components is called function correlation. The failure of the trigger component will result in the inaccessibility or failure of the related component, which is said to be isolated by the trigger component. For example, in a computer system, peripheral devices such as monitors and keyboards can access the ho...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06F30/20G06F119/04
CPCG06F30/20G06F2119/04
Inventor 朱桂霞钱玉刚蓝剑李迪亮周田蜜胡玉莹卢冰秦凤
Owner CHINA NUCLEAR POWER OPERATION TECH
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