炭素电极敲击法无损检测专家系统的设计  

The Design of Carbon Electrode Nondestructive Testing Expert System Used Coin-Tap Method

作　　者：曹晓琳[1] 王双维[2] 魏志刚[3] 高志华[2] 侯英哲[2] 

机构地区：[1]吉林大学汽车工程学院,长春130025 [2]东北师范大学物理学院,长春130024 [3]中钢集团吉林炭素股份有限公司,吉林市132002

出　　处：《微计算机信息》2009年第10期303-304,259,共3页Control & Automation

摘　　要：本文针对碳素电极内部损伤无损检测问题,结合实际生产经验,研究了敲击法炭素电极检测技术,并设计了以DSP为核心的测量子系统及以电脑为核心的训练母系统,形成了一套完整的无损检测专家系统。系统对工件施加机械冲击后产生的声音信号预处理后,进行小波分析,将得到的小波特征作为神经网络的输入向量进行模式识别,用人类检测专家经验训练神经网络,最终形成智能专家系统,实现产品的无损检测。In order to nondestructive testing carbon electrode a coin-tap method which is applied on this is researched combining produce experiences in this paper. Furthermore, a measure subsystem based on DSP and a training parent system based on computer are designed, both of them compose a whole nondestructive testing expert system. The acoustic signals which are caused by mechani- cal shocks on work pieces are analyzed which the method of wavelet after preprocessing. And the wavelet characters are inputted in neural net as input vector. After training the neural net with human testing experts, a intelligence expert system which can test carbon electrode nondestructively is designed.

关 键 词：碳素电极 敲击法 无损检测 

分 类 号：TH89[机械工程—仪器科学与技术]