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多工况过程动态SDG故障诊断

周虹 左洪福 苏艳 白芳

周虹, 左洪福, 苏艳, 白芳. 多工况过程动态SDG故障诊断[J]. 航空动力学报, 2012, 27(11): 2539-2546.
引用本文: 周虹, 左洪福, 苏艳, 白芳. 多工况过程动态SDG故障诊断[J]. 航空动力学报, 2012, 27(11): 2539-2546.
ZHOU Hong, ZUO Hong-fu, SU Yan, BAI Fang. Fault diagnosis for multistage dynamic processes based on signed directed graph[J]. Journal of Aerospace Power, 2012, 27(11): 2539-2546.
Citation: ZHOU Hong, ZUO Hong-fu, SU Yan, BAI Fang. Fault diagnosis for multistage dynamic processes based on signed directed graph[J]. Journal of Aerospace Power, 2012, 27(11): 2539-2546.

多工况过程动态SDG故障诊断

基金项目: 国家自然科学基金与中国民航联合资助基金重点项目(60939003);江苏省博士后科研资助计划项目(1002016B)

Fault diagnosis for multistage dynamic processes based on signed directed graph

  • 摘要: 通过分析多工况过程的故障动态特性,在符号有向图(SDG)中引入工况条件,补充对未测节点的表达,提出了一种新的定性描述模型——过程动态有向图,给出了建模方法和基于故障依赖性关系 D 矩阵的诊断流程.该模型满足了随工况变化调整结构和参数的需求,诊断算法解决了实际系统部分状态常常因未测量而造成信息缺失的问题.同时综合不同过程的SDG诊断能改善静态SDG模型定性推理分辨率.利用提出的方法建立了某民用飞机发动机引气系统的诊断模型并进行了诊断,结果表明该模型有效且实用.

     

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出版历程
  • 收稿日期:  2011-09-07
  • 刊出日期:  2012-11-28

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