| 一种基于Kalman滤波和能量原理的实时损伤识别方法(英文) |
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| 作者姓名： | Xing-huai HUANG Shirley DYKE Zhao-dong XU |
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| 作者单位： | Key Laboratory of C&PC Structures of the Ministry of Education, Southeast University;School of Civil Engineering, Purdue University |
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| 基金项目： | Project supported by the National Science Foundation of USA(Nos.CNS-1035748 and CNS-1035773);the Program for Jiangsu Province 333 Talents;Funds for Excellent Doctoral Dissertation of Southeast University(No.YBJJ1207),China |
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| 摘 要： | 目的:建立一种损伤识别方法,能够实时地监测多自由度复杂结构中构件的损伤情况。方法:1.用能量原理对结构刚度进行解构,建立结构单元刚度和节点响应之间的关系;2.用Kalman滤波原理分析结构刚度的预测值和测量值,迅速对结构的刚度进行识别(图6–9);3.对每一步计算进行耗时监测,确保算法的实时性(图10)。结论:1.该方法能够较准确地得到结构的刚度信息,同时得出损伤单元的损伤位置和损伤量;并且收敛速度快,计算量小,具有很强的实时性和抗噪能力;2.对于本文的桁架结构,所有杆件刚度均能在0.4 s内收敛,平均每一荷载步计算时间约为0.0012 s,小于采样周期1/256 s,说明该方法可以迅速、准确地对结构进行实时的监测。
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| 关 键 词： | 实时模型修正 能量平衡原理 Kalman滤波原理 损伤识别 健康监测 |
An in-time damage identification approach based on the Kalman filter and energy equilibrium theory |
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| Xing-huai HUANG,Shirley DYKE,Zhao-dong XU.An in-time damage identification approach based on the Kalman filter and energy equilibrium theory[J].Journal of Zhejiang University Science,2015(2):105-116. |
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| Authors: | Xing-huai HUANG Shirley DYKE Zhao-dong XU |
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| Institution: | 1. Key Laboratory of C&PC Structures of the Ministry of Education, Southeast University, Nanjing 210096, China
2. School of Civil Engineering, Purdue University, West Lafayette IN 47907, USA |
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| Abstract: | |
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| Keywords: | In-time model updating Kalman filter Energy equilibrium theory Damage identification Anti-noise capacity Structure health monitoring |
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