地震动未知情况下迭代类复合反演算法比较研究  

Study of Multiple Inversion Method for Structure with Unknown Ground Motion

作　　者：王建有[1] 陈健云[2] 李宗坤[1] 刘金云[2] 

机构地区：[1]郑州大学环境与水利学院,河南郑州450001 [2]大连理工大学抗震教研室,辽宁大连116023

出　　处：《华北水利水电学院学报》2006年第4期4-6,共3页North China Institute of Water Conservancy and Hydroelectric Power

摘　　要：输入信息测试不完备是结构动力测试中常遇到的问题.在以往研究的基础上,重点对地震动未知情况下的迭代类复合反演识别算法进行了研究,分析比较了统计平均算法和迭代识别法的异同点,并对迭代识别的算法做了进一步的收敛性理论分析,指出了该算法收敛存在的不稳定性,回答了长期以来对该算法提出的疑问.The imperfect testing input information is often meeted during the structure motion tested. On the basis of study of the existed methods for multiple inversion, an iterative approach for system identification under unknown ground motion is further studied by comparing statistical average method with the iterative approach, and analysing the convergence of the iterative approach from theory. The results show this iterative approach is not steady except when computing data in iterative approach is equal.

关 键 词：地震动 系统识别 复合反演 

分 类 号：TV698.13[水利工程—水利水电工程]