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A Dynamic Reliability Evaluation Method for Multi-state Systems

A multi-state system, reliability technology, applied in special data processing applications, instruments, electrical digital data processing, etc., can solve problems such as failure to achieve accurate evaluation of system reliability and failure to achieve dynamic update

Inactive Publication Date: 2016-06-08
UNIV OF ELECTRONICS SCI & TECH OF CHINA
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] So far, the research on the reliability evaluation of multi-state systems using the monitored state information is still blank at home and abroad, and the accurate evaluation of the reliability of each system cannot be realized by only using the reliability history data, and the reliability evaluation cannot be realized. Buzz for

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  • A Dynamic Reliability Evaluation Method for Multi-state Systems
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Embodiment Construction

[0035] The present invention will be further described below in conjunction with the accompanying drawings and specific embodiments.

[0036] Such as figure 1 As shown, the multi-state system dynamic reliability evaluation method of the present invention includes steps: according to the multi-state system structure and the unit state, determine the unit state combination corresponding to each state of the system; collect the state information of the multi-state system during use; The information determines the state of the unit in the multi-state system; the multi-state system reliability for the remaining life is calculated based on the current unit state.

[0037] The multi-state system is composed of multiple units, and each unit has more than two discrete states. This discrete state describes all possible states of a unit from normal operation to complete failure, expressed as where}N l is the number of all possible states of unit l, s l,i represents the i state of cel...

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Abstract

The invention discloses a method for evaluating the dynamic reliability of a multi-state system. Specifically, according to the state information monitored by the multi-state system and the composition logic of the units in the system, a Bayesian recursive model is constructed to calculate the location of the units in the current multi-state system. Each state probability, from which the state probability and reliability of the multi-state system in the remaining service period are derived. The method of the present invention makes full use of the monitored state information of each system to update the reliability evaluation model, and compared with the existing reliability evaluation method, it can obtain a more accurate and dynamically updated reliability evaluation value for each system, This can effectively avoid the failure of each system and guide the formulation of a more lean maintenance strategy.

Description

technical field [0001] The invention belongs to the technical field of reliability evaluation of complex systems, and in particular relates to a dynamic reliability evaluation method of a multi-state system. Background technique [0002] Reliability assessment techniques have been widely used. It helps engineers understand and master the life and health status of engineering systems. With the development of modern systems and equipment towards large-scale, complex and precise directions, and the gradual in-depth exploration of the failure mechanism and potential laws of the system, it is found that the failure evolution process of the system and its components during the life cycle is often It presents the characteristics of multi-state, and the failure law and mechanism, work performance and efficiency of each state are different. In this case, if the conventional two-state reliability theory is used to roughly divide the system into two states of "normal" and "failure", ...

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G06F19/00
Inventor 刘宇左明健黄洪钟汪忠来朱顺鹏肖宁聪李彦锋
Owner UNIV OF ELECTRONICS SCI & TECH OF CHINA
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