星载铷钟的故障模式及影响分析

The Failure Modes and Effects Analysis of the Space-born eRubidium Clock

星载铷钟在许多空间系统中起着重要作用,要求其具有高的可靠性。阐述了故障模式及影响分析在星载铷钟可靠性设计中的重要作用,介绍了星载铷钟的基本原理和结构简图,依据星载铷钟的功能将其划分为6个子系统,在此基础上进行了故障模式及影响分析,并给出了物理泵体子系统的部分FMEA结果。

The space-borne rubidium atomic frequency standard s(RAFS) play a critical role in many space systems. Their performance and reliab ility will greatly influence the functions of these systems. The failure mode an d effects analysis (FMEA) is applied in the space-borne RAFS to identify and re ctify the failures during its development and design stages. The basi c princi ple of the space-borne RAFS and its framework diagram are introduced. A certain space-borne RAFS is divided into six subsystems and its reliability block diag ram is depicted. Each subsystem is analyzed by FMEA and a part of the FMEA table of physics package subsystem is presented as an example.