摘要
裂纹的识别是故障诊断领域研究的一个热点问题。基于构件的固有频率变化,从反问题的角度出发,把裂纹的识别问题转化为一个优化问题,将裂纹的相对位置及深度参数转化为二进制编码,提出基于遗传算法的平板构件裂纹的识别方法。为了减少遗传算法的计算量,对遗传算法作了一定的改进。计算结果表明算法计算精度高,计算量小,可广泛的应用于拉深件裂纹识别及结构损伤检测等场合。
Crack identification research in the field of fanlt diagnosis is a hot issue. Mainly based on the changes of the inherent frequencies,from the inverse problem,transforming the crack identification problem into an optimization problem,meanwhile translating the parameters of the crack location and depth into binary codes ,it proposes a method for identifying of a crack in a plate based on the genetic algorithms. In order to reduce the amount of computation,the genetic algorithm has been improved. The result shows that this algorithm is of the high accuracy and a small amount of calculation,it can be applied to wide ranges of crack identification and structural damages detection and so on.
出处
《机械设计与制造》
北大核心
2009年第4期13-15,共3页
Machinery Design & Manufacture
基金
江苏省科技攻关(BE2004093)
关键词
平板
裂纹识别
遗传算法
固有频率
Plate
Crack identification
Genetic algorithm
Natural frequency
