摘要
确信可靠性理论基于可靠性科学原理,在产品设计阶段综合考量产品的性能参数与不确定性,实现了产品的正向设计与定量设计。为了将确信可靠性理论转化为实践可行的可靠性设计流程,提出了基于概率测度的确信可靠性建模与分析方法。通过研究功能性能裕量分析确定关键性能参数与性能阈值,通过理论分析、仿真建模、实验建模建立产品的性能方程、裕量方程与退化方程;确定量化参数的不确定性,开展确信可靠性分析,并计算可靠性定量指标。本文为可靠性设计工作流程提供创新性的理论探索和工程实践,为进一步说明该方法的应用流程,本文以某型电连接器作为案例进行研究,定量提出了电连接器可靠性的优化改进方向。
The belief reliability theory based on the principle of reliability science which considers the performance parameters and uncertainties of products during the product design process achieve the reliability forward design and quantitative design.In order to transform the belief reliability theory into a practical and feasible reliability design process,this paper proposes a belief reliability modelling and analysis method based on probability measure.Research determines key performance parameters and thresholds through researching functional performance margin analysis,establishes product performance equations,margin equations and degradation equations through theoretical analysis,simulation modeling,and experimental modeling,quantifies the uncertainty of parameters,develop belief reliability analysis and calculate reliability quantitative indicators.This paper provides innovative theoretical exploration and engineering practice for the reliability design workflow.In order to further illustrate the application process of the method,a certain type of electrical connector is taken as a case study and the optimization direction of electrial connector reiiabitity is put forward quantitatively.
作者
李泊远
康锐
余丽
LI Boyuan;KANG Rui;YU Li(School of Reliability and Systems Engineering, Beihang University, Beijing 100191, China)
出处
《系统工程与电子技术》
EI
CSCD
北大核心
2021年第7期1995-2004,共10页
Systems Engineering and Electronics
基金
国家自然科学基金(61573043)资助课题。
关键词
确信可靠性
正向设计
定量设计
性能裕量
belief reliability
forward design
quantitative design
performance margin
