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基于分离策略的航天器多故障模式诊断方法
引用本文:金洋,王日新,徐敏强. 基于分离策略的航天器多故障模式诊断方法[J]. 宇航学报, 2012, 33(6): 698-704. DOI: 10.3873/j.issn.1000-1328.2012.06.003
作者姓名:金洋  王日新  徐敏强
作者单位:哈尔滨工业大学深空探测基础研究中心,哈尔滨 150080
基金项目:国家重点基础研究发展基金(973计划),国防重点学科实验室开放基金
摘    要:针对定性模型诊断方法在处理多故障模式复杂系统时计算量大,不能满足航天器自主诊断实时性要求的问题,提出了新的诊断方法。为了减小冲突识别的实时计算规模,引入冲突识别的分离策略,提出了解析冗余计算方法。扩展了候选产生算法,先识别可能的异常部件,再通过冲突环境对异常部件的故障类型进行确定,在实现多故障模式系统故障诊断的同时,缩小了匹配空间。以某卫星一次电源系统为例,通过与现有算法进行对比,验证了本文的方法能够有效地减小诊断的规模,提高诊断效率,满足航天器自主诊断的需求。

关 键 词:故障诊断  解析冗余  多故障模式  一次电源系统  
收稿时间:2012-01-31

A Spacecraft Autonomous Failure Diagnosis Approach for Multiple Failure-Mode System Based on Qualitative Models
JIN Yang , WANG Ri-xin , XU Min-qiang. A Spacecraft Autonomous Failure Diagnosis Approach for Multiple Failure-Mode System Based on Qualitative Models[J]. Journal of Astronautics, 2012, 33(6): 698-704. DOI: 10.3873/j.issn.1000-1328.2012.06.003
Authors:JIN Yang    WANG Ri-xin    XU Min-qiang
Affiliation:Deep Space Exploration Research Center, Harbin Institute of Technology, Harbin 150080,China
Abstract:In order to solve the large amount of calculatial problem of the failure diagnosis approach for a multiple failure mode complex system based on qualitative models,a new approach is proposed in this paper.Aiming at reducing the real-time computational scale,a method is proposed for calculating the analytic redundancy when a separation strategy for conflict recognition is adopted.The candidate generation method is extended by recognizing the failure component firstly,and the confirming the failure-mode.This method can reduce the matched space effectively while implementing the failure diagnosis of multiple failure mode system.This approach is applied to a primary electrical power system of some satellite,results of comparison with the existing method show that the approach can reduce the amount of calculation,and improve the diagnosis efficiency.
Keywords:Fault diagnosis  Analytic redundancy  Multiple failure mode  Primary electrical power system
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