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Method for determining and optimizing system maintenance rate

A maintenance rate, optimization target technique, applied in the field of safety system engineering

Active Publication Date: 2015-05-27
LIAONING TECHNICAL UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Another problem is that modern systems employ a spare parts strategy to ensure reliability

Method used

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  • Method for determining and optimizing system maintenance rate
  • Method for determining and optimizing system maintenance rate
  • Method for determining and optimizing system maintenance rate

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Experimental program
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Effect test

Embodiment Construction

[0045] 1 space fault tree

[0046] Space Fault Tree (SFT) was proposed in 2012, and some research results have been achieved so far. The basic theory of space fault tree considers that the system works in the environment, and due to the nature of the basic events or physical components that make up the system, the probability of failure under different conditions is different. For example, for a diode in an electrical system, its failure probability is directly related to working time, working temperature, passing current and voltage. If the system is analyzed, the working time and working temperature of each component may be different. With the change of the overall working time and ambient temperature of the system, the failure probability of the system is also different. This phenomenon actually exists, but it is often ignored, and the probability of failure is considered constant.

[0047] The author tries to use SFT to represent the variable failure rate of components i...

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Abstract

The invention discloses a method for determining and optimizing a system maintenance rate. The method is characterized in that the maintenance rate is adopted to ensure the system availability when a storage element and the element failure rate are affected by the working environment, the system is shown by using a dynamic fault tree, and the distribution of the element failure rate is determined by using the space fault tree theory to further determine the distribution of the element maintenance rate. The method comprises the following steps: solving a subtree and the system, determining the distribution of the element maintenance rate after giving the system availability, and determining the maintenance rate under different optimization objectives. The method can be used for determining and optimizing the system maintenance rate.

Description

technical field [0001] The invention relates to safety system engineering, in particular to determination and optimization of system maintenance rate. Background technique [0002] In practice, it is generally hoped that the system will achieve certain goals on a macro level, such as system reliability, availability, failure rate, and total maintenance costs. The realization of the system's macro goals is difficult to guarantee from the overall level of the system. The system's goals should be guaranteed by controlling the basic component parameters of the system. These parameters include: component failure rate, maintenance rate, maintenance cost, etc. Parameters such as component failure rate are determined by the nature of the component itself and cannot be changed by the user; while the maintenance rate can be adjusted during work, that is, certain macro goals of the system can be achieved through the adjustment of the maintenance rate. The failure rate of components is...

Claims

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Application Information

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IPC IPC(8): G06Q10/04
CPCG06Q10/04
Inventor 荣德生贺莹崔铁军赫飞马恒
Owner LIAONING TECHNICAL UNIVERSITY