左憲章， 錢蘇敏， 張  云， 常  東
（軍械工程學院無人機工程系，河北 石家莊 050003）
摘  要：傳統的脈沖渦流傳感器采用圓柱式結構，其磁場大部分在空氣中傳播，造成能量的損失，因此該文設計M型電磁傳感器在單線圈傳感器上增加一個U型磁軛來提高磁場的利用率。通過ANSYS仿真軟件對M型傳感器與單線圈傳感器檢測不同深度的裂紋進行仿真對比，結果證明M型傳感器的靈敏度高，信號強，同時對于傳感器激勵源參數進行優化。
關鍵詞：脈沖渦流；M型傳感器；裂紋檢測；參數優化
中圖分類號：TP212；TP391.9；TH878；TG115.28       文獻標志碼：A      文章編號：1674-5124（2013）03-0065-05
Simulation analysis and parametric optimization of M-type pulsed eddy current
sensors to detect cracks
ZUO Xian-zhang， QIAN Su-min， ZHANG Yun， CHANG Dong
（Department of UAV Engineering，Ordnance Engineering College，Shijiazhuang 050003，China）
Abstract: The single-coil sensor was used as the traditional pulsed eddy current sensor， but the magnetic field mostly spreads in the air， resulting in the loss of energy. So a M-type electromagnetic sensor is proposed. The M-type sensor is made of a single-coil and a U-shaped yoke which improved the utilization of the magnetic field. Based on ANSYS simulation， a comparison of the M-type sensor is carried out with the single-coil sensor in detecting the different depths of cracks. The simulation proves the effectiveness of the M-type sensor and the sensor excitation source parameters are optimized at the same time.
Key words: pulsed eddy current； M-type sensor； cracks detection； parametric optimization