航天器故障征兆识别机制研究  

Study of spacecraft fault symptom recognizing mechanism

作　　者：刘帆[1] 李明[1] 李怡[1] 康妮[1] 

机构地区：[1]西安卫星测控中心

出　　处：《飞行器测控学报》2009年第6期1-5,共5页Journal of Spacecraft TT&C Technology

摘　　要：为克服针对二值逻辑型阈值比较方法的固有缺陷,本文基于航天器状态划分故障征兆的思想,提出了利用遥测数据的数值型特征甄别遥测野值并获取故障征兆可信度的规则推理新方法。经验证,该机制不仅能够有效避免遥测野值导致的诊断误报现象,而且能够充分体现遥测数据的变化趋势和满足判断条件。Based on the thought of differentiating fault symptom with spacecraft status,one improved RBR technique,which adapts the numerical properties of telemetry to discriminate wild data and obtain certainty factor of fault symptom,has been introduced in this thesis to overcome the inherent defects of two valued logic threshold.The test results show that this mechanism can not only avoid fault alarm caused by wild data,but can fully reflect the trend of telemetry and the result of meeting judging conditions.

关 键 词：航天器 故障诊断 征兆识别 基于规则推理 可信度 

分 类 号：V467[航空宇航科学与技术—航空宇航制造工程]