A multi-level task reliability assignment method and system

Abstract

The present invention discloses a multi-level task reliability allocation method and system, including the allocation level model required for acquisition based on the target product and the analysis target. The allocation level model includes several sequentially associated single-level models, each The scale of the constituent units in the associated single-layer model decreases successively, and each parameter in the single-layer model is the reliability index of the target product; based on the distribution hierarchy model and the analysis target, each single-layer model is obtained Reliability distribution coefficients of each component unit in each model; optimize the reliability distribution coefficients of each component unit in each single-layer model, obtain the optimized reliability distribution coefficient, and complete the distribution of multi-level task reliability. The method for determining the core distribution coefficient of the present invention starts from the fault maintenance data, and is based on the occurrence characteristics of unit faults, without continuing the mutual fault occurrence relationship, and avoids the disadvantages of poor subjectivity and implementability of the traditional technical scheme.

Description

technical field [0001] The invention belongs to the technical field of reliability distribution of electromechanical equipment, and in particular relates to a multi-level task reliability distribution method and system. Background technique [0002] Reliability allocation technology is a key technology in the process of product reliability design. For electromechanical equipment, the same unit will have different reliability performance when installed in different electromechanical equipment, that is, the failure rate is not fixed, and standardization cannot be achieved. , which brings great difficulties to the reliability prediction of electromechanical equipment. Whether the prediction results are reasonable depends entirely on the rationality of the reliability distribution results. Especially in the initial stage of new product development, how to reasonably allocate the reliability level of each unit, identify weak points and To circumvent, there is no effective and fe...

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Problems solved by technology

[0013] In view of the above problems, the present invention proposes a multi-level task reliability allocation method and system, which discretizes the allocation process into multiple levels of execution, uses the reliability index as the starting point for determining the reliability allocation coefficient of the target level, and proposes an "adjustment coefficient" The concept of reliability allocation is determined based on the adjustment coefficient. The allocation process is completely based on the fault history data of the product, which eliminates the influence of human factors and avoids the implementation of the allocation scheme caused by the allocation result being too high or too low. sex problem

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