基于SCE算法的结构系统识别  

Shuffled complex evolution algorithm for structural system identification

作　　者：唐和生[1] 李鹏飞[1] 范存新[2] 

机构地区：[1]同济大学结构工程与防灾研究所,上海200092 [2]苏州科技学院工程力学系,江苏苏州215011

出　　处：《振动工程学报》2010年第3期243-248,共6页Journal of Vibration Engineering

基　　金：国家自然科学基金资助项目(50708076);江苏省高校自然科学基金资助项目(08KJB560003)

摘　　要：使用SCE(Shuffled Complex Evolution)算法进行结构系统参数识别,并将该问题描述为一个多峰值非线性高维优化问题。文中给出多种工况下的数值模拟算例,包括不完备输出信息、噪声干扰和无先验参数信息等。识别结果证明了SCE算法应用于结构系统识别问题的可行性、稳定性和有效性。Shuffled Complex Evolution（SCE） algorithm is a heuristic method that has yielded promising results for solving complex optimization problems.The characteristics of SCE are its simple structure,easy use,exactness of solution,and robustness.This paper utilizes a SCE strategy to parameter estimation of structural systems,which could be formulated as a multi-modal numerical optimization problem with high dimensions.Some results obtained with this algorithm are presented for the identification of structural systems under conditions including limited input/output data,noise polluted signals,and no prior knowledge of parameters.The results demonstrate the applicability,stability and efficiency of the SCE algorithm for structural system identification.

关 键 词：SCE算法 优化 系统识别 参数估计 

分 类 号：TU311.3[建筑科学—结构工程] TU323.5