基于模型的故障诊断在空间电源系统中的应用研究.pdfVIP

Vol. 13 . 1 13 1 Jan. 2006 ELECTRONICS OPTICS CONTROL 2006 1 : 1671- 637 (2006) 1 2 徐亨成, 张建国 ( 1. , 464000; 2. , 100083) : 空间电源系统工作时间长运行环境特殊, 在执行任务期间不可避免发生故障为 保障任务 成, 需建立起空间电源系统在线故障诊断系统, 实现在线故障检测诊断和修复 (FDIR) , 防止故障传播和灾难性事故发生在分析空间电源系统电路结构和故障特征基础上, 建 立起基于模型在线故障诊断系统通过分析和论证, 该诊断系统能够很好的诊断出空间电源系统 电路的单点故障多重故障及单传感器故障, 并具有较好的诊断推理速度和较高的准确性 : 故障诊断; 电源系统; 基于模型; 冲突集 : V2422; TP277 : A Application of modelbased fault diagnosis in aircraft power system 1 2 XU Hengc eng , ZHANG JianGuo (1. The First Aeronautical College fo the Air Force, Xinyang 464000, China; 2. Beij ing University of Aero nautics Astronautics, Bejiing 100083, China) Abstract : Since t e aircraft power system usually operates for a long time and in a special environment, fault may occur during flig t. In order to accomplis t e task successfully and avoid fault propagation t at may result in severe failure, it is necessary to build up an online fault diagnosis system to realize t e realtime Fault De tection, Diagnosis, and Recovery ( FDIR) . After analyzing t e circuit structure and fault c aracteristics of t e aircraft power system, t e aut ors built an online modelbased fault diagnosis system. Performance analysis demonstrate t at t is diagnosis system can detect t e singlepoint fault, multiple faults and t e single sensor fault of t e aircraft power system, and it also as a ig reasoning speed and accuracy. Key Words: fault diagnosis; power system; modelbased; conflict set , , 0 ( FDIR) , ,