| 基于模态区间分析的半定性故障诊断方法 |
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| 引用本文： | 樊久铭,王秋生,徐敏强,邹经湘.基于模态区间分析的半定性故障诊断方法[J].哈尔滨工业大学学报,2007,39(5):774-778. |
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| 作者姓名： | 樊久铭 王秋生 徐敏强 邹经湘 |
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| 作者单位： | 哈尔滨工业大学航天学院,哈尔滨,150001;哈尔滨工业大学航天学院,哈尔滨,150001;哈尔滨工业大学航天学院,哈尔滨,150001;哈尔滨工业大学航天学院,哈尔滨,150001 |
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| 摘 要： | 为了提高故障诊断的抗干扰能力和可靠性,提出了基于模态区间分析和解析冗余关系相结合的半定性故障诊断方法.利用模态区间分析仿真得到的精确区间包络线进行故障检测,可提高故障检测的抗干扰能力.通过在键合图模型中加入观测信号和虚拟传感器的方法,建立诊断键合图模型并得到系统的解析冗余关系.根据诊断键合图的因果路径和解析冗余关系残差趋势分析建立具有残差变化方向的故障特征矩阵,从而提高故障隔离的准确性.将该半定性方法应用到五箱系统的故障诊断中,结果证明该方法是有效的.
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| 关 键 词： | 模态区间分析 包络线 诊断键合图 解析冗余关系 故障诊断 |
| 文章编号： | 0367-6234（2007）05-0774-05 |
| 修稿时间： | 2007-03-12 |
Semi-qualitative fault diagnosis method based on modal interval analysis |
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| FAN Jiu-ming,WANG Qiu-sheng,XU Min-qiang,ZOU Jing-xiang.Semi-qualitative fault diagnosis method based on modal interval analysis[J].Journal of Harbin Institute of Technology,2007,39(5):774-778. |
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| Authors: | FAN Jiu-ming WANG Qiu-sheng XU Min-qiang ZOU Jing-xiang |
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| Affiliation: | School of Astronautics, Harbin Institute of Technology, Harbin 150001, China |
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| Abstract: | To improve the anti-jamming ability and reliability of fault diagnosis,the semi-qualitative fault diagnosis method which combines the Modal Interval Analysis(MIA) and Analytical Redundancy Relations(ARRs) together has been proposed.The exact interval envelopes for the system have been obtained by using MIA.The fault detection method using interval envelopes can improve the anti-jamming ability of fault detection.The Diagnostic Bond Graph(DBG) model has been constructed by introducing observed signal and vir... |
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| Keywords: | modal interval analysis envelopes diagnostic bond graph analytical redundancy relations fault diagnosis |
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