| 基于连续模型的大型结构模态参数识别 |
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| 引用本文： | 姚志远,汪凤泉. 基于连续模型的大型结构模态参数识别[J]. 东南大学学报(自然科学版), 2003, 33(5): 617-620 |
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| 作者姓名： | 姚志远 汪凤泉 |
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| 作者单位： | 东南大学土木工程学院,南京,210096 |
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| 基金项目： | 国家自然科学基金资助项目 (5 9775 0 2 2 ) |
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| 摘 要： | 基于连续时间模型，利用导数的近似值代替导数值，运用最小二乘法估计结构参数．讨论了导数近似值的选择方法，并分析了算法的收敛性．研究了结构环境激励下结构物理参数的识别方法．通过仿真计算表明，该方法简单有效，能够使用在桥梁和建筑的健康监测和振动控制中．
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| 关 键 词： | 环境振动 参数识别 模态识别 |
| 文章编号： | 1001-0505(2003)05-0617-04 |
Method of identification of a structural physical parameters-based continuous time model |
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| Yao Zhiyuan Wang Fengquan. Method of identification of a structural physical parameters-based continuous time model[J]. Journal of Southeast University(Natural Science Edition), 2003, 33(5): 617-620 |
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| Authors: | Yao Zhiyuan Wang Fengquan |
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| Abstract: | An identification approach was researched, it estimated structural physical parameters via ambient excitation. This approach was to replace the derivative operator in the continuous time model by an approximation and estimation of the physical parameters of structures by the least-squares method. Choice of approximations was discussed, and convergence of the approach was analyzed. The numerical results show that the method is of simple and effective, and it can be used in health monitoring and vibration controlling for bridges and architecture. |
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| Keywords: | ambient vibration parameter identification modal identification |
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