| 单输入和多输入时域模态参数识别法的比较研究 |
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| 引用本文： | 张培强 杨前进. 单输入和多输入时域模态参数识别法的比较研究[J]. 振动工程学报, 1992, 5(3): 227-234 |
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| 作者姓名： | 张培强 杨前进 |
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| 作者单位： | 中国科技大学近代力学系，中国科技大学近代力学系 合肥，230026，合肥，230026 |
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| 摘 要： | 本文利用现代控制论中可控性与可观性理论,从理论和实验两方面对模态参数时域识别法进行了分析和研究,给出了利用时域法能够识别出振动系统所有模态参数的充要条件,并对单输入和多输入识别法进行了比较,指出在重根模态和大阻尼等复杂情形下,多输入识别法拥有单输入识别法所无法比拟的优点。
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| 关 键 词： | 模态分析 系统辨识 时域法 |
Comparation Study about Identification of Modal Parameters by Single and Multiple Input Time Domain Methods |
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| Zhang Peiqian Yang Qiangjin. Comparation Study about Identification of Modal Parameters by Single and Multiple Input Time Domain Methods[J]. Journal of Vibration Engineering, 1992, 5(3): 227-234 |
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| Authors: | Zhang Peiqian Yang Qiangjin |
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| Abstract: | In this paper,the time domain identification methods of modal parameters are studied and analyzed.The neccessary and sufficient condition for the complete identification of all modal parameters of vibrationsystem is given,the single input and multiple input time domain identifacation methods are compared.It isconcluded theoretically and experimentically that in the case of repeated root modes,high damping ratio,multiple input identification methods have many advantages over the single input identification methods. |
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| Keywords: | modal analysis system identification time domain method experimental modal analysis |
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