| 基于数字信号处理的钢铁电磁无损检测方法研究 |
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| 引用本文： | 冯文斌,何云斌,樊景云.基于数字信号处理的钢铁电磁无损检测方法研究[J].哈尔滨理工大学学报,2004,9(2):114-117. |
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| 作者姓名： | 冯文斌 何云斌 樊景云 |
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| 作者单位： | 1. 哈尔滨理工大学,材料科学与工程学院,黑龙江,哈尔滨,150040
2. 哈尔滨理工大学,计算机与控制学院,黑龙江,哈尔滨,150080 |
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| 摘 要： | 针对钢铁电磁无损检测中使用传统信号处理方法检测分选率偏低的问题，依据初始幅值磁导率法和数字信号处理的基本原理，采用现场可编程门阵列器件和电子设计自动化技术，提出并实现了数字化的钢铁电磁无损检测试验装置设计方案，通过对FPGA器件编程实现了对检测信号的数字信号处理。试验表明，采用数字信号处理技术可以准确地提取检测信号，对螺栓裂纹工件检测准确率为97．9％。
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| 关 键 词： | 数字信号处理 钢铁 电磁无损检测 数字信号处理 螺栓 FPGA |
| 文章编号： | 1007-2683(2004)02-0114-04 |
| 修稿时间： | 2003年10月27 |
Study of the Method of Steel and Iron ENDT Based on Digital Signal Progressing |
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| FENG Wen-bin,HE Yun-bin,FAN Jing-yun.Study of the Method of Steel and Iron ENDT Based on Digital Signal Progressing[J].Journal of Harbin University of Science and Technology,2004,9(2):114-117. |
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| Authors: | FENG Wen-bin HE Yun-bin FAN Jing-yun |
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| Affiliation: | FENG Wen-bin~1,HE Yun-bin~2,FAN Jing-yun~1 |
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| Abstract: | This paper puts forward that FPGA family chip applies to steel and iron ENDT Instrument on the basis of fundamental rule of magnetic permeability testing and digital signal processing. The approach mainly is aimed at unideal testing result using the means of analog signal processing. A pilot which uses FPGA chip and EDA technology is given. Tests show that the characteristic signal is obtained accurately by DSP technology. |
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| Keywords: | ENDT FPGA bolt digital signal processing |
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