This article introduces a roll eddy current detecting operating principles, equipment composition, functions and the role and effectiveness of roller.
介绍了轧辊涡流检测设备的工作原理，设备组成，功能以及在轧辊方面的作用和效果。
Digital correlation method was used to extract phase information as the phase information of eddy current testing signals could reflect the characteristics of detecting system.
涡流检测信号中的相位信息能反映检测系统的某些特性，讨论用数字相关法提取相位特征信息。
The cross correlator which realises intelligent eddy current inspection system can effectively restrain the interruptive signal and has high defects detecting ability and reliable inspection.
利用互相关器实现的智能涡流检测系统能有效抑制干扰信号，具有很高的缺陷的检出能力和检测可靠性。
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