左憲章， 錢蘇敏， 張  云， 常  東
（軍械工程學(xué)院無人機(jī)工程系，河北 石家莊 050003）
摘  要：傳統(tǒng)的脈沖渦流傳感器采用圓柱式結(jié)構(gòu)，其磁場(chǎng)大部分在空氣中傳播，造成能量的損失，因此該文設(shè)計(jì)M型電磁傳感器在單線圈傳感器上增加一個(gè)U型磁軛來提高磁場(chǎng)的利用率。通過ANSYS仿真軟件對(duì)M型傳感器與單線圈傳感器檢測(cè)不同深度的裂紋進(jìn)行仿真對(duì)比，結(jié)果證明M型傳感器的靈敏度高，信號(hào)強(qiáng)，同時(shí)對(duì)于傳感器激勵(lì)源參數(shù)進(jìn)行優(yōu)化。
關(guān)鍵詞：脈沖渦流；M型傳感器；裂紋檢測(cè)；參數(shù)優(yōu)化
中圖分類號(hào)：TP212；TP391.9；TH878；TG115.28       文獻(xiàn)標(biāo)志碼：A      文章編號(hào)：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