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Reliability distribution method and apparatus based on immune genetic optimization

An assignment method and immune genetic technology are applied in the field of reliability assignment methods and devices based on immune genetic optimization, and can solve the problem of inability to use non-tandem model task reliability assignment and the like

Inactive Publication Date: 2016-04-20
NO 719 RES INST CHINA SHIPBUILDING IND
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AI Technical Summary

Problems solved by technology

Similar to the score assignment method, this method is only applicable to the basic reliability assignment and the task reliability assignment of the series model, and cannot be used for the task reliability assignment of the non-tandem model

Method used

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  • Reliability distribution method and apparatus based on immune genetic optimization
  • Reliability distribution method and apparatus based on immune genetic optimization
  • Reliability distribution method and apparatus based on immune genetic optimization

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Embodiment Construction

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

[0068] see figure 1 As shown, the embodiment of the present invention provides a reliability assignment method based on immune genetic optimization, including the following steps:

[0069] S1. Establish a multi-working condition reliability model of the system

[0070] Exclude the selected equipment and the equipment whose reliability index is determined, and optimize the reliability index distribution of the remaining equipment. According to the operating conditions of the remaining equipment, establish a system multi-condition reliability model with constraints: R S =F(R 1 , R 2 ,...,R N ), where R S is the system task reliability, R 1 , R 2 ,….R N is the equipment task reliability, N is the number of equipment, N is a positive integer, and N≥2, F(R 1 , R 2 ,...,R N ) is a nonlinear function representing the relationship ...

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Abstract

The invention discloses a reliability distribution method and apparatus based on immune genetic optimization, and relates to the field of reliability distribution. The method comprises the following steps: eliminating devices with selected models and devices with determined reliability indexes, and then according to operation working conditions of residual devices, carrying out system reliability modeling; constructing full-life cost function and obtaining a function taking the system full-life cost as an object; and randomly generating initial population, screening antibodies in the population, operating adaptive intersection and variation operation of a genetic algorithm, next, operating an immunization algorithm, extracting a vaccine, vaccinating the antibodies, then classifying the antibodies with higher fitness into new-generation population, determining whether the new-generation population is convergent, if so, outputting a distribution result, and otherwise, returning the antibody screening step. According to the invention, minimization of full-life cost is taken as a distribution object, the immunization algorithm and the genetic algorithm are combined together in a distribution process, and the method and apparatus provided by the invention are applied to task reliability distribution of a complex system.

Description

technical field [0001] The invention relates to the field of system reliability distribution methods, in particular to a reliability distribution method and device based on immune genetic optimization. Background technique [0002] Reliability index distribution is to distribute the reliability index requirements of the system to each device in the system reasonably. Multiple devices are connected to each other in series, parallel, parallel, etc. to form the overall function of the system. In the task reliability assignment of the system, the reliability index of the system is taken as input, the system reliability index is decomposed into equipment, and the distribution result of each equipment reliability index is output. Reasonable reliability index allocation results can effectively reduce the total design and manufacturing costs of each device in the system, improve system security, and reduce maintenance workload while ensuring the realization of system reliability in...

Claims

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Application Information

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IPC IPC(8): G06N3/12
CPCG06N3/126
Inventor 程力旻徐巍张文俊穆旻皓熊尧
Owner NO 719 RES INST CHINA SHIPBUILDING IND
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