航天产品可靠性框图自动评估系统实现与研究

Study on Automatic Estimation System of Spaceflight Product’s Reliability Block Diagram

航天产品可靠性框图评估是产品可靠性设计、试验、鉴定等的重要基础,手工计算复杂、速度慢、精度低,开发相应的可靠性框图自动评估软件将会使精度和速度都大大提高。在对航天产品结构特征分析的基础上,选取了串联、并联、表决、和联及旁联5种基本模型,建立了可靠性框图自动评估系统。测试与应用表明：该系统自动化程度高,界面友好,操作简单方便;计算精度高,速度快,可方便地加载其他可靠性基本模型,具有较强可扩展性。

Spaceflight product reliability block diagram estimation plays an important role in spaceflight product＇s reliability design, test and identification. If done by hand, the calculation is complex, the speed is low and the precision can＇t be guaranteed. On the basis of the analysis of spaceflight product＇s architecture characteristics, series, parallel, voting, conjunct and stand-by model are selected, and automatic estimation system of reliability block diagram is built. Testing and applications indicate that this system has high level of automatization, friendly interface, simple manipulation method, satisfactory precision and speed, can load other reliability models conveniently, and possesses relatively strong expansibility.