| 基于Hilbert-Huang变换和粗糙集的航天器在轨故障检测 |
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| 引用本文： | 邢晓辰,蔡远文,杨甘霖,任江涛.基于Hilbert-Huang变换和粗糙集的航天器在轨故障检测[J].装备指挥技术学院学报,2012(2):63-67. |
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| 作者姓名： | 邢晓辰 蔡远文 杨甘霖 任江涛 |
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| 作者单位： | 装备学院研究生管理大队;装备学院试验指挥系 |
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| 摘 要： | 航天器在轨故障检测中,首先基于Hilbert-Huang变换对航天器在轨运行状态信号进行特征提取。提取的特征属性常存在冗余,冗余属性耗费存储空间和处理时间,并干扰正确决策的生成。为解决此问题,采用粗糙集中基于可辨识矩阵和逻辑运算的属性约简算法,对提取的属性知识进行知识表示和约简,达到简化目的。以具有可类比性的地面轴承振动信号,对所提故障检测方法进行验证,验证效果良好。
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| 关 键 词： | 航天器 在轨故障检测 Hilbert-Huang变换 粗糙集 |
On-orbit Fault Detection of Spacecraft Based on Hilbert-Huang Transition and Rough Set Theory |
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| XING Xiaochen,CAI Yuanwen,YANG Ganlin,REN Jiangtao.On-orbit Fault Detection of Spacecraft Based on Hilbert-Huang Transition and Rough Set Theory[J].Journal of the Academy of Equipment Command & Technology,2012(2):63-67. |
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| Authors: | XING Xiaochen CAI Yuanwen YANG Ganlin REN Jiangtao |
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| Affiliation: | 1(1.Company of Postgraduate Management,Academy of Equipment,Beijing 101416,China; 2.Department of Testing and Command,Academy of Equipment,Beijing 101416,China) |
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| Abstract: | During the on-orbit fault detection of spacecraft,Hilbert-Huang transition(HHT) is used to pick up the characteristic attributes of spacecraft’s on-orbit data.Redundancy attribute,which can waste the storage space and the operation time of the spacecraft’s computer,always exists and interrupts the correct decision-making.To solve this problem,attribute reduction arithmetic based on cognizable matrix and boolean calculation of rough set is used to reduce the characteristic attributes.Oscillation data of axletree on ground is used as an example to validate the method,and the result shows that this method performs well. |
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| Keywords: | spacecraft on-orbit fault detection Hilbert-Huang transition(HHT) rough set theory |
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