DC/DC电源模块的SET效应传播规律及特征应用研究

项目名称： DC/DC电源模块的SET效应传播规律及特征应用研究

项目编号： No.41304148

项目类型： 青年科学基金项目

立项/批准年度： 2014

项目学科： 天文学、地球科学

项目作者： 马英起

作者单位： 中国科学院空间科学与应用研究中心

项目金额： 25万元

中文摘要： 星用DC/DC电源模块主要通过内部线性电路实现对电源电压的调整和控制，发生异常将对整个卫星电子系统带来灾难性后果。近年来一系列卫星故障调查发现是由单粒子瞬态脉冲（SET）效应诱发导致。卫星故障归零过程中，由于电源模块内部产生的SET在整个电路系统中传播后的特征表现多样化，故障失效的准确界限也不易建立，其SET效应危害往往被忽视或归结为其他功能电路的故障。 本项目利用脉冲激光单粒子效应装置精确定位优势，旨在分析电源模块的SET效应多种传播规律，发掘其对负载电路及整个电子系统带来的潜在影响及危害。并针对电源模块SET敏感特性开展SET特征应用的方法研究，以典型综合性的单粒子效应敏感器件本身作为空间辐射环境的探测器及卫星电路系统的预警传感器，辐射环境探测向效应预警的转变，被动加固防护向在线监控的转变，使应用电路系统具有了应对突发单粒子事件的功能，为航天器高可靠安全运行需求提供有力支撑。

中文关键词： 单粒子效应；单粒子瞬态脉冲；电源模块；脉冲激光测试；预警监测

英文摘要： There are linear devices used within the hybrid design in DC/DC converter. The failure of the satellite electronic systems will have disastrous consequences. Single Event Transient（SET）events have been identified as the cause of several anomalies on multiple satellites.SET propagation characteristics are more complicated，the exact boundaries of the failure are difficult to distinguish during the process of confirmation. Hazards caused by SETs are often ignored by the engineers. This project is targeted on the SET propagation characteristics in the DC/DC power conversion circuit using pulsed laser single event effects（SEE）equipment with the advantages of precise positioning. The analysis of SET propagation and the potential impacts on the subsequent circuits are explored. The first concept of SEE self-monitor based on the analysis of SEE characteristics and the potential impact on the subsequent circuits will be established in the world. And this method makes the circuits themselves have the ability to monitor the sudden SEE.The high reliability and security running needs of the spacecraft will be provided strongly.

英文关键词： Single Event Effects；Single Event Transients；DC/DC converter；Pulsed laser test；Monitor