摘要
研究了测试信息不完备情况下的结构参数识别问题,针对稀疏模态的结构系统,提出了基于有限测点模态信息的优化识别算法。该算法通过有限测点上的模态参数构造关于结构物理参数的目标函数,然后采用遗传算法进行参数识别。最后一数值算例说明了该算法的可行性。
Identification for structural parameters with incomplete information is studied.According to the system with separate modes,a optimization identification method using limited modal information is put forward.In this method,a criterion function for the parameter estimation is built by using the modal information on the limited nodes,then the structural parameters can be obtained by using genetic algorithm.At last,a numerical example is proposed,the identification results show the efficiency of the method.
出处
《世界地震工程》
CSCD
北大核心
2008年第3期45-48,共4页
World Earthquake Engineering
关键词
系统识别
结构识别
模态参数
system identification
structure identification
modal parameter
