PHASE DETECTION AND COMPARISON APPARATUS FOR DETERMINING THE PHASE DERIVATIVE WITH RESPECT TO FREQUENCY OF AN EDDY CURRENT TEST SIGNAL

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  机译： 相对于涡流测试信号频率确定相位导数的相位检测和比较装置

• 4. IMPROVED PHASE SENSITIVE EDDY CURRENT DEFECT DETECTOR UTILIZING FREQUENCY DOUBLING OF DETECTED SIGNAL PRIOR TO PHASE DETECTION [P] . 美国专利： US3721896A . 1973-03-20

  机译： 在相位检测之前利用检测到的信号的频率加倍来改善相位敏感涡流缺陷检测器

• 5. METHOD AND APPARATUS FOR DETECTING A LEAKAGE CURRENT AND DETERMINING A PHASE OF THE LEAKAGE CURRENT USING PHASE COMPARISON BETWEEN A NET CURRENT AND PHASE CURRENTS [P] . 韩国专利： KR20090056686A . 2009-06-03

  机译： 利用净电流和相电流之间的相位比较来检测泄漏电流并确定泄漏电流相位的方法和装置

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• 1. Design of a Control Device for Synthetic Making Test Based on Pre-Arcing Current Detection and Phase Control [J] . Zhengyang ZHOU ,Minfu LIAO ,Xingming FAN . 电磁分析与应用期刊（英文） . 2009,第4期
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• 3. Detection of Damage and Crack in Railhead by Using Eddy Current Testing [J] . Zenglu Song ,Tsutomu Yamada ,Hideki Shitara . 电磁分析与应用期刊（英文） . 2011,第12期
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