| 扩展特征系统实现算法在结构模态参数识别中的应用 |
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| 引用本文： | 祁泉泉,辛克贵,崔定宇.扩展特征系统实现算法在结构模态参数识别中的应用[J].工程力学,2011(3):29-34,40. |
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| 作者姓名： | 祁泉泉 辛克贵 崔定宇 |
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| 作者单位： | 清华大学土木工程系土木工程安全与耐久教育部重点实验室; |
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| 基金项目： | 国家自然科学基金项目(50878117) |
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| 摘 要： | 特征系统实现算法(ERA)需要以自由响应或脉冲数据作为前提,而实际工程中,随机荷载作用下的响应较为常见.该文在ERA算法的基础上进行扩展,引入观测马科夫(Observer Markov)参数,推导并提出扩展特征系统实现算法(EERA),使其可以应用于随机荷载下的强迫振动响应,提高计算精度.该文首先引入3个自由度数值模拟...
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| 关 键 词： | 模态参数识别 特征系统实现算法(ERA) 马科夫算子 无线传感技术 强迫振动响应 |
THE APPLICATION OF THE EXTENDED EIGENSYSTEM REALIZATION ALGORITHM FOR STRUCTURAL MODAL PARAMETER IDENTIFICATION |
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| QI Quan-quan,XIN Ke-gui,CUI Ding-yu.THE APPLICATION OF THE EXTENDED EIGENSYSTEM REALIZATION ALGORITHM FOR STRUCTURAL MODAL PARAMETER IDENTIFICATION[J].Engineering Mechanics,2011(3):29-34,40. |
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| Authors: | QI Quan-quan XIN Ke-gui CUI Ding-yu |
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| Affiliation: | QI Quan-quan,*XIN Ke-gui,CUI Ding-yu(Department of Civil Engineering,Tsinghua University,Key Laboratory of Civil Engineering Safety and Durability of China Education Ministry,Beijing 100084,China) |
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| Abstract: | The eigensystem realization algorithm is one of the global time domain methods for modal parameter identification,and it is widely used recently for its high accuracy and fast speed.The essence of ERA is using the measured impulse response or free response to perform identification;however,the forced vibration response is more commonly desired in the real project.Based on ERA,the paper presents the extended eigensystem realization algorithm(EERA) which could be used along with the measured forced response,a... |
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| Keywords: | modal parameter identification eigensystem realization algorithm Markov parameter wireless sensing technology forced vibration response |
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