电子学报2017，Vol.45Issue(4)：805-812,8.DOI:10.3969/j.issn.0372-2112
相关竞争失效场合雷达功率放大系统可靠性评估
Reliability Evaluation of Radar Power Amplifier System in Case of Related Competing Failures
摘要
Abstract
Since it is difficult to obtain adequate performance distribution information of highly reliable components in case of related competing failures and system reliability problems cannot be accurately estimated,the multi-state system reliability evaluation method in consideration of epistemic uncertainty was proposed in case of related competing failures.Firstly,the components' sudden failure thresholds were assumed as a decreasing random process to represent the correlation between accumulative degradation and sudden failure.Secondly,in order to reduce the impact on the epistemic uncertainty of components,the components' performance distribution model based on interval variables was built on the assumption that the components' performance damage distribution parameter and sudden failure parameter caused by random shocks are interval variables.Thirdly,the traditional general generating function method was improved and the definition of general generating function and its algorithm were proposed.Finally,the reliability of the power amplifier of a radar system was analyzed.With simple and clear procedures,this method not only avoids the components' complex failure mode and less status information,but also features great universality and high engineering application value.关键词
相关竞争失效/认知不确定性/区间通用生成函数/功率放大系统/可靠性Key words
related competing failure/epistemic uncertainty/interval-valued universal generating function method/power amplifier system/reliability分类
自科综合引用本文复制引用
潘刚,尚朝轩,梁玉英,蔡金燕,孟亚峰..相关竞争失效场合雷达功率放大系统可靠性评估[J].电子学报,2017,45(4):805-812,8.基金项目
国家自然科学基金(No.61271153,No.61372039) （No.61271153,No.61372039）
