多星遥测联合判断实时故障分析模型设计及应用  

Design and application of multi-satellite telemetry combined judgment real-time fault analysis model

作　　者：苏鹏 高燕 董婷婷 庞岩 王泽伟 Su Peng;Gao Yan;Dong Tingting;Pang Yan;Wang Zewei(Key Laboratory of Spacecraft In-Orbit Fault Diagnosis and Maintenance,Xi'an 710043,China)

机构地区：[1]航天器在轨故障诊断与维修重点实验室,西安710043

出　　处：《国外电子测量技术》2020年第9期128-131,共4页Foreign Electronic Measurement Technology

摘　　要：针对传统门限检测手段难以对卫星模拟量遥测进行实时故障判断的问题,结合分布式卫星系统多颗卫星空间位置接近、设计结构相同、工作时间同步等特点,其模拟量遥测数据变化规律的一致性,提出并实现了基于统计特性的多星遥测联合判断的实时故障分析模型。使用χ^2拟合优度检验的统计方法对多颗卫星的相关参数进行联合判断,可以在未超出常规故障预警门限前,实时分析卫星模拟量遥测突变或缓变的情况,准确判断得出模拟量遥测变化规律。通过在某系列分布式卫星系统中应用此分析模型,验证了该模型的正确性,使重点模拟量遥测实时故障诊断识别率大幅提升。Aiming at the problem that the traditional threshold detection method is difficult to judge the real-time fault of satellite analog telemetry,the real-time fault analysis model of multi-satellite telemetry based on statistical characteristics is proposed and realized by combining the characteristics of multiple satellites in distributed satellite system,such as space proximity,same design structure working time synchronization.By using the statistical method ofchisquare goodness-of-fit test to judge the relevant parameters of many satellites,we can analyze the situation of remote signal mutation or slow change of satellite analog quantity in real time before the limit of conventional fault warning,and accurately judge the law of remote measurement change of analog quantity.Through the application of this model in a series of distributed satellite system,the correctness of the model is verified,and the recognition rate of real-time fault diagnosis analog telemetry is greatly improved.

关 键 词：多星遥测 实时分析 χ^2拟合优度检验 分布式卫星系统 

分 类 号：V557.3[航空宇航科学与技术—人机与环境工程]