Method for realizing reliability allocation for product with balanced life

A distribution method and reliability technology, applied in special data processing applications, instruments, electrical digital data processing, etc., can solve the problem of large differences in the reliability of internal components of the product life balance module, lack of consideration for product reliability distribution, and product reliability. Block diagram modeling complexity is high, to achieve the effect of reliability allocation, saving design overhead, and improving accuracy and efficiency

Inactive Publication Date: 2012-10-10
CHINA UNIV OF MINING & TECH
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Problems solved by technology

[0006] The purpose of the present invention is to provide a product reliability distribution method to achieve life balance, to solve the high complexity of product reliability block diagram model

Method used

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  • Method for realizing reliability allocation for product with balanced life
  • Method for realizing reliability allocation for product with balanced life
  • Method for realizing reliability allocation for product with balanced life

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Embodiment 1

[0029] Embodiment 1: Realization of life-balanced product reliability distribution method With the database platform as a supporting tool, a library including product sub-functions and sub-components, a reliability block diagram analysis library, a numerical operation method library, and a reliability distribution value and module library have been established. The main functions are:

[0030] 1) The product sub-function and sub-component library stores multiple independent sub-functions and multiple interconnected sub-components obtained from the product architecture analysis, and provides the sub-function and sub-component obtained by product decomposition for the life-balanced product reliability allocation method. Part base data.

[0031] 2) The reliability block diagram analysis library performs the functions of reliability block diagram generation and reliability allocation function generation. Pop up an element from the sub-function library, use the energy flow to esta...

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Abstract

The invention discloses a method for realizing the reliability allocation for a product with a balanced life. The method comprises steps that through the product function and structure analysis, the subfunctions and a subcomponent database of a product are built; based on the energy transfer, conversion and branching relation, a reliability block diagram of a multi-subcomponent series-parallel connection structure is built for each subfunction; the reliability block diagram is analyzed, two objective optimization models which has the maximum reliability of the subfunctions and the minimum reliability variance of a series subsystem are built, and a multi-objective optimization evolutionary algorithm is used for solving; and the reliability of the product subcomponents selects the reliability mean value of all the subfunction operation, the subcomponents with the similar reliabilities are clustered into a module, so the product reliability allocation and module planning scheme is obtained. By aiming at the problem that the whole reliability of the product is lowered due to unbalanced reliabilities of the subcomponents during the product design, a model is built on the basis of an energy reliability block diagram, a method for realizing component reliability balance and optimized product reliability allocation is proposed, so the whole reliability allocation scheme of the product is obtained.

Description

technical field [0001] The invention relates to a product reliability distribution method, in particular to a product reliability distribution method for realizing life balance. Background technique [0002] As the complexity of electromechanical products used in high-tech industrial processes continues to increase, attention to product reliability is gradually increasing, and the above-mentioned products refer to electromechanical products in particular. Reliability allocation is in the initial stage of product reliability design, according to the predefined product reliability index, considering the product system structure, reasonably allocate the reliability of each sub-component of the product, so as to meet the overall reliability of the product. Subcomponents are structural units that realize product functions, and multiple subcomponents are connected in series or in parallel to form the overall function of the product. In a series structure, the system can only oper...

Claims

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Application Information

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IPC IPC(8): G06F17/50
Inventor 李中凯程志红江晓红刘后广郝敬宾
Owner CHINA UNIV OF MINING & TECH
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