Reliability degree assessment method for multilevel state monitoring data fusion

A technology for monitoring data and reliability, applied in electrical digital data processing, special data processing applications, instruments, etc.

Inactive Publication Date: 2014-04-23
UNIV OF ELECTRONIC SCI & TECH OF CHINA
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0006] So far, the multi-state system dynamic reliability assessment technology that integrates multi-level condition mon

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  • Reliability degree assessment method for multilevel state monitoring data fusion
  • Reliability degree assessment method for multilevel state monitoring data fusion
  • Reliability degree assessment method for multilevel state monitoring data fusion

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Embodiment Construction

[0067] The present invention will be further described below in conjunction with the accompanying drawings and specific embodiments.

[0068] Such as figure 1 As shown, the reliability evaluation method of multi-level state monitoring data fusion of the present invention comprises the following steps:

[0069] According to the degradation law of the system and unit, determine the state of the system and unit during the degradation process, and clarify the unit state combination corresponding to each state of the system; collect the condition monitoring data or information of the system and unit during service; according to the multi-level condition monitoring data or Information updates the current state probability of the units in the system; dynamically estimates the reliability of the multi-state system during the remaining service period.

[0070] The described engineering system has multiple states, so it is called a multi-state system. It is composed of multiple units, ...

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Abstract

The invention discloses a reliability degree assessment method for multilevel state monitoring data fusion. The reliability degree assessment method specifically comprises the following steps of: determining states in a system and unit degradation process according to system and unit degradation laws, determining a unit state combination corresponding to the various states of a system, and collecting the state monitoring data or information of the system and units during a service process; updating the current state probability of the units in the system according to multilevel state monitoring data or information; dynamically estimating the reliability of the multi-state system in the remainder service period. According to the method disclosed by the invention, the state monitoring data or information of a system level and a unit level in the multi-state system is fused, the logical combination relationship between the system and unit degradation laws is combined, and the current state probability of each unit in the multi-state system is determined by constructing a Bayes recursive model, thus predicating the future state and reliability of the system; meanwhile, the errors of the state monitoring data or information are considered, thus the method disclosed by the invention is higher in universality.

Description

technical field [0001] The invention belongs to the technical field of reliability evaluation of complex systems, and in particular relates to a multi-state system dynamic reliability evaluation method based on multi-level state monitoring data fusion. Background technique [0002] The rapid progress of modern science and technology has made the equipment have more complex structures and more powerful functions. These equipments involve various fields of social production. Whether the equipment can continue to work efficiently, safely and stably has a great impact on daily life, enterprise production and even national security. play a vital role. Therefore, reliability engineering is an indispensable engineering technology for modern industry, especially for high-precision and high-reliability manufacturing industries. As one of the important techniques of reliability engineering, the importance of reliability evaluation is self-evident. A good reliability evaluation metho...

Claims

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Application Information

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IPC IPC(8): G06F19/00
Inventor 刘宇陈初杰张凡李彦锋杨圆鉴黄洪钟左明健
Owner UNIV OF ELECTRONIC SCI & TECH OF CHINA
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