| 颤振试飞脉冲激励信号分析技术 |
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| 引用本文： | 关爱锐,刘旭华,张芹芹. 颤振试飞脉冲激励信号分析技术[J]. 科学技术与工程, 2012, 12(4): 836-838 |
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| 作者姓名： | 关爱锐 刘旭华 张芹芹 |
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| 作者单位： | 中国飞行试验研究院,西安,710089 |
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| 摘 要： | 颤振模态参数识别是当前飞机颤振试飞的一个重要课题。本文介绍了一种脉冲激励颤振试飞信号数据处理方法.采用改进的空域相关滤波法对脉冲响应信号进行降噪处理，改善频响函数估计精度。在模态参数识别过程中采用有理分式正交多项式分段拟合技术，实现颤振模态参数估计。
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| 关 键 词： | 颤振试飞、脉冲激励、空域相关滤波、正交多项式、模态参数辨识 |
| 收稿时间： | 2011-11-13 |
| 修稿时间： | 2011-11-19 |
Analysis Technology Applied to the Impulse Excitation Signal of Flight Flutter Test |
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| GUAN Airui,LIU Xuhua and ZHANG Qinqin. Analysis Technology Applied to the Impulse Excitation Signal of Flight Flutter Test[J]. Science Technology and Engineering, 2012, 12(4): 836-838 |
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| Authors: | GUAN Airui LIU Xuhua ZHANG Qinqin |
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| Affiliation: | Chinese flight test establishment,Chinese flight test establishment |
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| Abstract: | Flutter mode parameters identification plays an important role in flight flutter test.A method is introduced to analyze the impulse excitation signal of flight flutter test.The improved spatial correlation filtering algorithm is used to reduce the noise of the impulse respond signal and improve the estimating precision of frequency response function.The orthogonal polynomial subsection fitting is used during model parameters identification,which helps to achieve estimating the flutter mode parameters. |
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| Keywords: | Flight flutter test impulse excitation spatial correlation filtering orthogonal polynomial model parameters identification |
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