卫星在轨故障地面诊断系统设计  

Design of Ground Diagnosis System for Satellite In-orbit Fault

作　　者：赵文[1] 董云峰[1] 

机构地区：[1]北京航空航天大学宇航学院,北京100191

出　　处：《航天器工程》2014年第3期92-97,共6页Spacecraft Engineering

摘　　要：为解决卫星在轨故障诊断问题,提出了一种故障地面诊断方法,并进行了诊断系统设计。在诊断方法中,建立了卫星各系统耦合的整星模拟器,利用卫星遥测与模拟器预测值形成残差,滤除遥测信息中已知的动态规律部分,缩小故障诊断阈值,提高故障检测的准确性,最后运用信号分析或机器学习的方法对残差实现诊断。诊断系统由遥测接口程序、整星模拟器、残差诊断程序、诊断调度程序、相关数据库和配套工具构成。从系统结构设计和算法的参数化设计两方面,分析了卫星故障地面诊断系统设计,并用建成的系统样机进行了验证。系统样机运行结果表明,这种方法和系统设计思路是可行、有效的。To solve the satellite in-orbit fault diagnosis problem, a fault diagnosis method and sys- tem design proposal are proposed. In the diagnosis method, a whole satellite simulator is estab- lished with every subsystems coupled, and the satellite telemetry and simulator predict value are subtracted to form residuals, the known dynamic regulation contained in the telemetry is re- moved, the diagnosis threshold is reduced and the fault detecting accuracy is improved. The sig- nal analysis methods and machine learning methods are used to diagnose the residuals. Diagnosis system consists of telemetry interface program, whole satellite simulator, residuals diagnosis pro- gram, databases and relative tools. A design proposal of satellite fault ground diagnosis system consists of system structure design and parameterized algorithm design, and then a demonstration system is established to verify this proposal. The operation results indicate that the method and design proposal are practicable and effective.

关 键 词：卫星故障诊断 整星模拟器 复杂系统 残差诊断 

分 类 号：TP277[自动化与计算机技术—检测技术与自动化装置]