| 发射状态下定向器束角速率信号的联合时频分析 |
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| 引用本文： | 徐强,张福祥.发射状态下定向器束角速率信号的联合时频分析[J].南京理工大学学报(自然科学版),2002,26(3):267-269. |
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| 作者姓名： | 徐强 张福祥 |
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| 作者单位： | 南京理工大学机械工程学院,南京,210094 |
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| 基金项目： | 国防科技预研行业基金资助项目 |
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| 摘 要： | 采用角速率作为定向器束振动特性的表征 ,用压电射流角速率陀螺仪测量了定向器束实际发射状态下的角速率。其时间历程包括发射时弹体在管内运行、燃气对定向器束冲击及冲击后定向器束自由振动的振动角速率。利用联合时频分析方法分析了振动角速率信号 ,确定了发射状态的不同时刻定向器束的振动频率
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| 关 键 词： | 定向器 角速率 陀螺仪 联合时频分析 |
| 修稿时间： | 2001年2月28日 |
Joint Time-frequency Analysis of Angular Rate of Launch Tubes' Cluster During Launching |
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| XuQiang,ZhangFuxiang.Joint Time-frequency Analysis of Angular Rate of Launch Tubes'''' Cluster During Launching[J].Journal of Nanjing University of Science and Technology(Nature Science),2002,26(3):267-269. |
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| Authors: | XuQiang ZhangFuxiang |
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| Abstract: | Angular rate is selected to represent the vibration characteristic. It was measured by using piezoelectric jet flow gyroscope when launching. The time history of angular rate includes three stages which are rocket moving in tube, exhausted flow impacting and free vibration after impacting. The angular rate signal was processed by using joint time frequency analysis algorithm. The time history dependent vibration frequency of launch tubes cluster was calculated. |
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| Keywords: | launch tubes angular rate gyroscope joint time frequency analysis |
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