一种基于改进PSO算法的结构损伤识别方法

陈震;朱军华;余岭

振动与冲击 ›› 2012, Vol. 31 ›› Issue (5) : 17-20.

PDF(2098 KB)
PDF(2098 KB)
振动与冲击 ›› 2012, Vol. 31 ›› Issue (5) : 17-20.
论文

一种基于改进PSO算法的结构损伤识别方法

  • 陈震1,朱军华2,余岭2
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An improved PSO algorithm for structure damage identification

  • Chen Zhen1 , Zhu Jun-hua2 , Yu Ling2
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摘要

根据“结构损伤发生在局部”这一信息特征,在粒子群算法中引入零变异率系数,提出一种改进的粒子群结构损伤识别方法。两层刚架单损伤数值仿真研究结果表明:与普通粒子群算法相比,本文所提出的方法具有收敛速度快、识别结果准确、抗噪能力较强及受种群数影响小的特点,这些优点对于将PSO应用于复杂结构的损伤诊断有着重要意义

Abstract

Based on the characteristic that the damages occurred in a structure are usually local, an improved particle swarm optimization (IPSO) algorithm for structure damage detection has been developed in this paper by adding a zero mutation ratio coefficient (ZMRC) into PSO. The numerical simulation of single damage for a two-story rigid frame show that the proposed method IPSO has many good properties, such as the faster convergence of the objective function, better identification accuracy, robust noise immunity and less effect of the size of population, compared with the PSO. Further, the effect of the weighed coefficients of objective function on identification accuracy was investigated, which is beneficial to the application of IPSO in the complex structure damage detection.

关键词

损伤检测 / 粒子群算法 / 约束优化 / 零变异率系数

Key words

damage detection / particle swarm optimization / constrained optimization / zero mutation ratio coefficient

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导出引用
陈震;朱军华;余岭. 一种基于改进PSO算法的结构损伤识别方法[J]. 振动与冲击, 2012, 31(5): 17-20
Chen Zhen;Zhu Jun-hua;Yu Ling . An improved PSO algorithm for structure damage identification[J]. Journal of Vibration and Shock, 2012, 31(5): 17-20

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