| 基于SDG模型和模糊融合的故障诊断方法 |
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| 引用本文： | 刘敏华,萧德云. 基于SDG模型和模糊融合的故障诊断方法[J]. 控制工程, 2006, 13(1): 10-14 |
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| 作者姓名： | 刘敏华 萧德云 |
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| 作者单位： | 清华大学自动化系,北京,100084;清华大学自动化系,北京,100084 |
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| 摘 要： | 将符号定向图SDG（Signed Directed Graph）节点偏差模糊化为定性模糊偏差，并从子节点向父节点对其进行数据融合，得到父节点故障源可能性，分析了该模糊融合传递信息的特性和处理各种发生故障的情形的优点。建立了基于SDG模型和模糊融合的故障诊断方法，包括SDG建模、故障源数检验和故障诊断等步骤，并以铝电解槽故障诊断为实例，说明了这种方法的有效性。
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| 关 键 词： | 符号定向图 模糊融合 故障诊断 铝电解槽 |
| 文章编号： | 1671-7848（2006）01-0010-05 |
| 收稿时间： | 2004-12-27 |
| 修稿时间： | 2005-09-28 |
Fault Diagnosis Method Based on SDG Model and Fuzzy Fusion |
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| LIU Min-hua,XIAO De-yun. Fault Diagnosis Method Based on SDG Model and Fuzzy Fusion[J]. Control Engineering of China, 2006, 13(1): 10-14 |
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| Authors: | LIU Min-hua XIAO De-yun |
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| Affiliation: | Department of Automation, Tsinghua University, Beijing 100084, China |
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| Abstract: | The deviation of SDG node is fuzzed as qualitative fuzzy deviation, and the new deviations of child nodes are fused into the possibility of fault source of parent node with the analysis of the character of fault information transfer and the adventage of dealing with different malfunction cases. Then the fault diagnosis method based on SDG and fuzzy fusion is built, including SDG modeling, n-ary fault source test and fault diagnosis involved. An example of fault diagnosis on aluminum reduction cell shows the validity of the method. |
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| Keywords: | SDG fuzzy fusion fault diagnosis aluminum reduction cell |
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