基于改进FMECA与故障传播模型结合的中子单粒子故障源定位分析  

Location analysis of neutron single particle fault source based on improved FMECA and fault propagation model

作　　者：刘基强 张改丽[2] 黄姣英[1] 刘荣昌[2] 张明杰[1] LIU Ji-qiang;ZHANG Gai-li;HUANG Jiao-ying;LIU Rong-chang;ZHAGN Ming-jie(School of Reliability and Systems Engineering,Beihang University,Beijing 100191,China;Laboratory of North Vehicle Research Institute,Beijing 100072,China)

机构地区：[1]北京航空航天大学可靠性与系统工程学院,北京100191 [2]中国北方车辆研究所,北京100072

出　　处：《微电子学与计算机》2020年第8期32-36,共5页Microelectronics & Computer

基　　金：装备预研领域基金(6140002010202,41402040301)。

摘　　要：随着器件加工工艺技术的不断发展,器件单元尺寸逐渐缩小,工作电压不断下降,使得器件抵挡单粒子效应的能力也在不断降低.针对某无人机用机载数据采集计算机,分析在大气中子辐射下数据采集计算机的故障传播机理.结合改进的FMECA方法,基于原因故障、结果故障以及原因故障对结果故障的贡献率,建立了计算机的故障传播图,通过逐层推理求得各底层故障模式发生概率,进而提出一种可能高风险源定位方法,定位到系统级可能的高风险故障源为数采计算机上两块单机板的核心器件FPGA.With the continuous development of components processing technology,the size of components unit is constantly reduced,and the working voltage is constantly reduced,so that the components’ability to resist single event effect is constantly reduced.This paper analyzes the fault propagation mechanism of the airborne data acquisition computer for an unmanned aerial vehicle(uav)under atmospheric neutron radiation.Combined with the improved FMECA method,based on the cause failure,the result failure and the contribution rate of the cause failure to the result failure,the fault propagation diagram of the computer is established,and the probability of occurrence of each underlying failure mode is obtained through layer-by-layer reasoning.A possible high-risk source location method is proposed.The possible high-risk fault source located at the system level is the core device FPGA of two single-boards on the computer.

关 键 词：中子单粒子效应 故障传播模型 改进FMECA 故障源定位 

分 类 号：TN406[电子电信—微电子学与固体电子学]