| 强迫振动法结构模态参数识别 |
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| 引用本文： | 罗晓英.强迫振动法结构模态参数识别[J].中南公路工程,2012(3):226-228. |
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| 作者姓名： | 罗晓英 |
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| 作者单位： | 山西长治公路勘察设计院,山西长治046000 |
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| 摘 要： | 通过激励结构振动的方法,可以采集到结构的强迫振动时程。再对强迫振动时程采用随机减量法提取自由振动信号,并进行ITD识别,即可得到结构的模态参数。对随机减量技术与ITD识别技术的基本原理进行了介绍,并给出了一个实测信号的识别实例。
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| 关 键 词： | 强迫振动法 模态参数识别 随机减量 ITD |
Mode Parameters Identification Based on Forced Vibration Method |
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| LUO Xiaoying.Mode Parameters Identification Based on Forced Vibration Method[J].Central South Highway Engineering,2012(3):226-228. |
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| Authors: | LUO Xiaoying |
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| Institution: | LUO Xiaoying(Highway Survey and Design Institute,in Changzhi,Shanxi 046000,China) |
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| Abstract: | The vibration time-histories of structure can be obtained by forced vibration method.Then,using random decrement method,the free vibration signal can be extracted form the samples.And finally,under the help of ITD identification technology,mode parameters of the structure can be obtained.In this paper,the basic theory of random decrement method and ITD identification technology was introduced.Based on these theories,some programmers are programmed.It can be founded that,the identification result was correct,so the same to the programmers. |
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| Keywords: | forced vibration method mode parameters identification random decrement method ITD |
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