论文:2015,Vol:33,Issue(1):129-134
引用本文:
李鑫, 周军, 刘莹莹, 刘睿. 基于等效置换的故障建模方法研究[J]. 西北工业大学学报
Li Xin, Zhou Jun, Liu Yingying, Liu Rui. Fault Modeling and Analysis Based on Equivalent Substitution Method[J]. Northwestern polytechnical university

基于等效置换的故障建模方法研究
李鑫, 周军, 刘莹莹, 刘睿
西北工业大学精确制导与控制研究所, 陕西西安 710072
摘要:
针对部件和系统故障建模与故障仿真的问题,提出一种基于等效模型置换的故障建模方法。在充分利用经验知识并尽力避免建立复杂模型的前提下,实现故障的有效模拟,形成通用的故障等效模型置换实施步骤。以液浮陀螺为例,首先分析工作机理,建立正常模型,并划分功能模块。然后结合功能分层思想和故障树分析方法进行故障模式分析,将故障分级归类。最后故障仿真实例表明,文中提出的故障建模方法能够有效模拟出陀螺故障特征,对一般系统或部件的故障建模问题具有积极的指导作用。
关键词:    故障建模    等效置换    故障仿真    液浮陀螺   
Fault Modeling and Analysis Based on Equivalent Substitution Method
Li Xin, Zhou Jun, Liu Yingying, Liu Rui
Institute of Precision Guidance and Control, Northwestern Polytechnical University, Xi'an 710072, China
Abstract:
A fault modeling method based on equivalent model substitution is presented. It can take full advantage of expert experience and extremely avoid complicated modeling. The general fault model and the equivalence substitution process are also given in this paper. In order to validate the method, a liquid floated gyro is taken for example. Firstly, the normal model is developed and partitioned into modules with the gyro mechanism. Then, the fault modes are analyzed with fault tree and hierarchy of functions in order to perform fault classification. Finally, the simulation results and their analysis show preliminarily that the proposed method can simulate gyro faults effectively and play an active and instructive role in the research on fault modeling for general systems or components.
Key words:    failure modes    fault tree analysis    mathematical models    fault modeling    equivalent substitution    fault simulation    liquid floated gyro   
收稿日期: 2014-09-04     修回日期:
DOI:
基金项目: 国家973基础研究项目(973-613156)与中央高校基本科研业务费专项资金(310214JCQ01003)资助
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作者简介: 李鑫(1987-),西北工业大学博士研究生,主要从事航天器姿态控制与故障分析研究。
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