太赫兹科学与电子信息学报
太赫玆科學與電子信息學報
태혁자과학여전자신식학보
Information and Electronic Engineering
2013年
5期
770-774
,共5页
Livingstone软件%航天器%基于模型诊断%推进系统
Livingstone軟件%航天器%基于模型診斷%推進繫統
Livingstone연건%항천기%기우모형진단%추진계통
Livingstone%spacecrafts%model-based diagnosis%propulsion system
航天器通常造价昂贵且无法批量生产，对其进行故障检测和诊断研究实用且必要。由美国宇航局 NASA 开发的 Livingstone 软件系统，使用一组多层次的定性逻辑模型来描述系统的行为，通过比较模型预测数据和传感器实测数据来检测和诊断系统故障。本文旨在说明 Livingstone软件能够应用于航天器故障检测和诊断领域。通过对 Livingstone 工作原理和过程的详细阐述，并利用 Livingstone 对航天器推进系统简化模型做仿真实验，给出可能的故障原因及可能性大小，说明 Livingstone 是一种有效而可靠的故障检测和诊断工具，能够快速、准确地诊断出航天器系统故障所在。
航天器通常造價昂貴且無法批量生產，對其進行故障檢測和診斷研究實用且必要。由美國宇航跼 NASA 開髮的 Livingstone 軟件繫統，使用一組多層次的定性邏輯模型來描述繫統的行為，通過比較模型預測數據和傳感器實測數據來檢測和診斷繫統故障。本文旨在說明 Livingstone軟件能夠應用于航天器故障檢測和診斷領域。通過對 Livingstone 工作原理和過程的詳細闡述，併利用 Livingstone 對航天器推進繫統簡化模型做倣真實驗，給齣可能的故障原因及可能性大小，說明 Livingstone 是一種有效而可靠的故障檢測和診斷工具，能夠快速、準確地診斷齣航天器繫統故障所在。
항천기통상조개앙귀차무법비량생산，대기진행고장검측화진단연구실용차필요。유미국우항국 NASA 개발적 Livingstone 연건계통，사용일조다층차적정성라집모형래묘술계통적행위，통과비교모형예측수거화전감기실측수거래검측화진단계통고장。본문지재설명 Livingstone연건능구응용우항천기고장검측화진단영역。통과대 Livingstone 공작원리화과정적상세천술，병이용 Livingstone 대항천기추진계통간화모형주방진실험，급출가능적고장원인급가능성대소，설명 Livingstone 시일충유효이가고적고장검측화진단공구，능구쾌속、준학지진단출항천기계통고장소재。
Spacecrafts are usually expensive and can not be put into mass production, thus it is very practical and necessary to do research on fault detection and diagnosis on spacecrafts. The Livingstone software system, developed by NASA, employs a group of multi-level qualitative logistic models to describe the behavior of the system, and detect and diagnose faults by comparing model prediction values and sensed values of the sensors. This paper is aimed at explaining the usage of Livingstone software in the area of fault detection and diagnosis on spacecrafts. The principle and working process of Livingstone are elaborated in detail. A simulation experiment is performed on a simplified model of spacecraft propulsion system. The reasonable fault causes and probabilities are analyzed. The experimental results show that Livingstone is an effective and reliable tool for fault detection and diagnosis, which can find the faults within system rapidly and correctly.
