摘要
降额设计是引信可靠性设计原则之一,在进行降额设计时,依据国军标GJB/Z35元器件降额准则和GJB/Z299C电子设备可靠性预计手册,尚不能完全解决引信用元器件降额到什么水平、哪个参数最有效等问题。针对此问题,以MIL-HAND-277F给出的元器件工作失效模型为基础,讨论了几种常用元器件的选用考虑及降额设计的依据。讨论可以得出:对于三极管、二极管、晶闸管、电容而言,电压降额是降低器件失效率的有效手段;对电阻、微处理器而言,功率降额是提高器件工作可靠性的手段。
Derating design is a principle of fuze reliability design.The usual derating design can not fully solve the problems of how to decide derating level of fuze＇s components and which parameter is the most effective by referring to the GJB/Z35（Principle of component derating） and GJB/Z299C（Electronic equipment reliability prediction manual）.Aiming at the problems,some kinds of components in common use of fuze derating design was discussed in this paper,and some concerning thought and principle of derating were put forward.The conclusion was obtained as below：for triode,diode,thyristor and capacitor,voltage derating was an effective measure to reduce the failure rates;for resistor and microprocessor,power derating was an effective measure to promote working reliability.
出处
《探测与控制学报》
CSCD
北大核心
2010年第5期1-5,共5页
Journal of Detection & Control
关键词
引信
元器件
可靠性
降额设计
fuze
components
reliability
derating design
