| THEORETICAL MODEL AND NUMERICAL METHOD ON ONLINE IDENTIFICATION OF DYNAMICAL CHARACTERISTICS OF STRUCTURAL SYSTEM （Department of Engineering Mechanics, Southeast University, Nanjing 210096, P.R. China） |
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| 引用本文： | 姚志远,汪凤泉.THEORETICAL MODEL AND NUMERICAL METHOD ON ONLINE IDENTIFICATION OF DYNAMICAL CHARACTERISTICS OF STRUCTURAL SYSTEM （Department of Engineering Mechanics, Southeast University, Nanjing 210096, P.R. China）[J].应用数学和力学(英文版),2004,25(8):957-962. |
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| 作者姓名： | 姚志远 汪凤泉 |
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| 作者单位： | [1]DepartmentofEngineeringMechanics,SoutheastUniversity,Nanjing210096,P.R.China [2]OriginalMemberofEditorialCommittee,AMM |
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| 基金项目： | theNationalNaturalScienceFoundationofChina (597750 2 2 ) |
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| 摘 要： | An online method of identification of dynamic characteristics only using measured ambient response of structural dynamic system is widely focused on. The Ibrahim and ARMA ( AutoRegressive Moving Average ) methods are basic identification methods. A model on dynamic system suffered by random ambient excitation was researched into, and a subspace decomposition methodwas introduced. Robustness and effectiveness of this approach on identification of vibration characteristics are demonstrated on numerical experiment.
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| 关 键 词： | 模态识别 系统识别 结构动力学系统 结构参数 随机振动 |
| 收稿时间： | 12 December 2002 |
Theoretical model and numerical method on online identification of dynamical characteristics of structural system |
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| Yao Zhi-yuan,Wang Feng-quan.Theoretical model and numerical method on online identification of dynamical characteristics of structural system[J].Applied Mathematics and Mechanics(English Edition),2004,25(8):957-962. |
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| Authors: | Yao Zhi-yuan Wang Feng-quan |
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| Institution: | Department of Engineering Mechanics, Southeast University, Nanjing 210096, P. R. China |
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| Abstract: | An online method of identification of dynamic characteristics only using measured ambient response of structural dynamic system is widely focused on.The Ibrahim and ARMA (AutoRegressive Moving Average) methods are basic identification methods.A model on dynamic system suffered by random ambient excitation was researched into, and a subspace decomposition method being different from traditional harmonic retrieval method was introduced.Robustness and effectiveness of this approach on identification of vibration characteristics are demonstrated on numerical experiment. |
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| Keywords: | modal identification system identification structure dynamic system |
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