基于多表达式编程与频率等高线相结合的结构裂纹检测

J4 ›› 2009, Vol. 44 ›› Issue (9): 22-27.

基于多表达式编程与频率等高线相结合的结构裂纹检测

刘明军修黎明李金屏彭喜元

1.刘明军,彭喜元哈尔滨工业大学电气工程与自动化学院, 黑龙江哈尔滨 150001; 2. 修黎明,李金屏济南大学信息科学与工程学院, 山东济南 250022

收稿日期:2009-06-20 出版日期:2009-09-16 发布日期:2009-11-05
作者简介:刘明军(1960-),男，教授,硕士生导师，从事小波分析、神经网络、计算机智能检测技术、智能故障诊断等研究工作.Email:lmj@ujn.edu.cn
基金资助:
山东省教育厅科技计划资助项目(J05G07)

Crack fault diagnosis based on MEP and frequency contour lines

LIU Meng-Jun, XIU Li-Meng, LI Jin-Bing-Bang-Chi-Yuan

1. School of Electrical Engineering and Automation, Harbin Institute of Technology, Harbin 150001, Heilongjiang， China; 
2. School of Information Science andEngineering, University of Jinan, Jinan 250022, Shandong， Chioa

Received:2009-06-20 Online:2009-09-16 Published:2009-11-05

摘要/Abstract

摘要：

在将进化算法用于裂纹诊断的基础上,对结构裂纹定位进行了深入分析和研究。将结构固有频率作为裂纹的诊断参数,根据频率等高线的交点及多表达式编程模型的预测结果来定位结构裂纹。实验结果表明该方法能够有效地融合二者的优点，实现裂纹快速、准确定位。

关键词: 裂纹检测;固有频率;多表达式编程;频率等高线

Abstract:

On the basis of a traditional evolutionary algorithm, a new method of crack fault diagnosis is discussed. The method uses the inherent frequencies as crack diagnostic parameters. According to the intersection point of frequency contour lines and the forecasted results of MEP, the structural crack position is located. The results show that the method can effectively integrate bothadvantages and achieve rapid and accurate location of the crack.

Key words: crack fault diagnosis; inherent frequency; multiexpressionprogramming (MEP); frequencies contour lines

中图分类号:

TP206+.3

刘明军修黎明李金屏彭喜元. 基于多表达式编程与频率等高线相结合的结构裂纹检测[J]. J4, 2009, 44(9): 22-27.

LIU Meng-Jun, XIU Li-Meng, LI Jin-Bing-Bang-Chi-Yuan. Crack fault diagnosis based on MEP and frequency contour lines[J]. J4, 2009, 44(9): 22-27.

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