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| 一种基于脉冲涡流无损检测技术的硬度分选仪的设计 | |
| 引用本文： | 白杨,王益祥. 一种基于脉冲涡流无损检测技术的硬度分选仪的设计[J]. 机械制造与自动化, 2014, 0(3): 28-31 |
| 作者姓名： | 白杨 王益祥 |
| 作者单位： | 南京理工大学机械工程学院,江苏南京210094 |
| 基金项目： | 国家自然科学基金资助项目（61074006） |
| 摘 要： | 基于脉冲涡流无损检测技术的硬度分选仪，以FPGA作为核心控制平台，采用DDS技术发出频率可调节的脉冲波，并设计了相应的信号采集电路，通过软件同步采样技术采集反馈的状态数据，然后通过对状态数据的主成分分析，提取出和材料硬度相关的数据信息，最后通过最小二乘法建立起特征数据与材料硬度的相关关系，从而最终实现判断钢铁材料硬度状态的目的。 |
| 关 键 词： | 脉冲涡流 无损检测 硬度分选 |
Design of Hardness Sorter Based on Pulsed Eddy Current Non destructive Testing Technology |
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| BAI Yang,WANG Yi xiang. Design of Hardness Sorter Based on Pulsed Eddy Current Non destructive Testing Technology[J]. Machine Building & Automation, 2014, 0(3): 28-31 | |
| Authors: | BAI Yang WANG Yi xiang |
| Affiliation: | (School of Mechanical Engineering, Nanjing University of Science and Technology, Nanjing 210094,China) |
| Abstract: | This paper describes a kind of hardness sorter based on nondestructive testing technology. The field programmable gate array is taken as the central control platform. and the frequeney of DDS signal generator based on FPGA is used to modulate its pulses. At the same time the signal acquisition circuit is designed.The software synchronization sampling technique is used to col ect the feedback status data and then pick up the data related to the hardness of material. At last,the correlativity between the hardness of material and characteristic data is established to distinguish the hardness status. |
| Keywords: | DDS pulsed eddy current nondestructive test DDS hardness sorting |
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