Method for determining reliability growth model test duration

Abstract

The invention discloses a method for determining a reliability growth model test duration, and the method comprises the following four steps: (1), deducing and exploring the correlation between the product of two parameters, i.e., a management strategy and a correction effectiveness coefficient, and a reliability test target value based on a PM2 model, and providing a physical basis for subsequentresearch; and (2) generating required simulation data by using MATLAB based on the negative correlation relationship between the product of the two parameters of the management strategy and the correction effectiveness coefficient and the reliability test target. And (3) carrying out data fitting and model solving by adopting a curve fitting mode based on MATLAB. And (4) constructing a non-linearmathematical equation in which the test duration is expressed by the management strategy and the correction validity coefficient, and giving a constant coefficient recommendation value of a 95% confidence interval. The invention is simple in implementation mode, easy to implement and simple and accurate in calculation.

Description

technical field [0001] The invention belongs to the technical field of reliability growth test, in particular to a method for determining the test duration of a reliability growth planning model (PM2 model). Background technique [0002] The reliability growth test is an important part of the reliability growth process, and the test duration is an important basis for formulating the overall test policy, coordinating the overall test plan, and dividing the test phases. At the same time, the test duration also affects the global resource allocation and cost level. Therefore, designing a reasonable test duration has high practical significance for completing the reliability growth test cost-effectively. [0003] According to domestic and foreign literature, although the planning model based on projection method (Planning Model based on Projection Methodology, PM2 model) has been used by many countries as the national military standard for many years, most of the current researc...

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Problems solved by technology

[0003] According to domestic and foreign literature, although the planning model based on projection method (Planning Model based on Projection Methodology, PM2 model) has been used by many countries as the national military standard for many years, most of the current research is aimed at the management strategy parameters and correction effectiveness coefficients. However, the test duration parameter has always been regarded as the subjective input parameter of the managers, which is usually determined by analogy based on the knowledge and experience of the managers, and there is a lack of qualitative and quantitative analysis methods for the test duration parameters

[0004] The current subjectively input test duration parameters cause the PM2 model to fail to correctly reflect the impact of changes in the two parameters of management strategies and corrective effectiveness coefficients on the reliability growth process

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