| 摘要: |
| 对液体火箭发动机故障的原始特征进行特征提取和选择，以使所建立的故障标准模式由少数几个新特征给予有效的表达。比较了不同原始特征分布矩阵对特征提取结果有效性的影响，并对采用新特征来代表各种故障的效果进行了检验，结果同采用原始特征的效果很接近。 |
| 关键词: 液体推进剂火箭发动机 发动机故障 故障诊断 特征提到~+ |
| DOI： |
| 分类号:V434 |
| 基金项目: |
|
| FEATURE EXTRACTED USED FOR LIQUID PROPELLANT ROCKET ENGINE FAULT DIAGNOSIS |
|
Liu Bing,Zhang Yulin
|
|
Dept. of Aerospace Technology, Nati0nal Univ. of Defence Techn0logy, Changsha, 410073
|
| Abstract: |
| The original feature of fault of liquid rocket engine is extracted, so that the normal pattern of malfunction can be expressed effectively by a few new features. The influence of different distributing matrix of original feature on the validity of extractive feature has been compared. The effect of using these new features to represent various fault has been examined’ The result shows that both effects are in accordance with each other. |
| Key words: Liquid propellant rocket engine Engine failure Fault diagnosis Feature extracted~+ |
