基于潜在缺陷暴露增益的可靠性试验设计规划模型

Reliability test design planning model based on potential defect exposure gain

针对装备所需进行的可靠性试验类型与应力水平等进行设计规划的理论较为匮乏的现状,提出了一种基于潜在缺陷暴露增益的可靠性试验设计规划模型。首先分析了可靠性试验环境因素及试验目的,定义了潜在缺陷暴露增益;然后从试验的全面程度和严酷程度出发,构建了各环境因素下试验费用函数模型和可靠度提升模型,在试验费用存在约束的条件下,以试验的潜在缺陷暴露增益最大和可靠度提升最高为目标函数构建了多目标非线性规划模型,并给出了该模型的求解方法。最后以某"报信者"系统为例,得出满足约束的最优试验方案,验证了模型的有效性与可行性。

Aiming at the present situation that the theory which guides the design and plan of reliability test type and stress level is insufficient,a reliability test design planning model based on potential defect exposure gain is proposed.Firstly,the environmental factors and test objectives of the reliability test are analyzed,and the potential defect exposure gain is defined.Then,the function model of the reliability test cost for each environmental factor and reliability improvement model is constructed from the perspective of the comprehensive degree and the severity of the reliability test,and a multi-objective nonlinear programming model is built with the test cost constraints,whose targets are both maximization of the potential defect exposure gain and the reliability improvement,and the solution method of the model is given.Finally,an example of the Harbinger system is given to obtain the optimal test scheme which satisfies the constraints and verifies the validity and feasibility of the proposed method.