摘要
在浅层探测瞬变电磁系统中,发射系统电路的杂散参数是导致发射电流关断早期振荡的关键因素。为解决发射关断早期振荡问题,提出了一种基于杂散电感模型的新型浅层瞬变电磁发射机电路设计方法,重点研究了其杂散电感模型的建模方法,并通过电路分析和MATLAB仿真分析了发射电流关断瞬态特性和电流关断早期振荡的产生机理。通过发射系统电路仿真和实验实测结果对比与分析表明,杂散电感模型理论分析与实验结果一致,可以准确模拟出实际发射电路关断早期振荡。研究工作对浅层瞬变电磁探测系统电路的优化设计,反演解释以及工程应用具有重要意义。
In the shallow detection transient electromagnetic system, the spurious parameters of the transmitter circuit are the key factors that cause. the oscillation in the early stage of the emission current turn-off. A novel shallow transient electromagnetic transmitter circuit design method based on stray inductance model is proposed to solve the oscillation in the early stage of the emission current turn off. The modeling method of the stray inductance model is mainly studied, and the principle of the transmit current turn-off transient characteristics and the oscillation in the early stage of the emission current turn-off are analysised by circuit analysis and MATLAB simulation. The comparison and analysis of transmitting system circuit simulation and experimental measurement results prove that this stray inductance model is consistent with the experimental results, and can accurately simulate the actual oscillation in the early stage of the emission current turn-off. This stray inductance model is of great significance for the optimal design.inversion and engineering application of shallow transient electromagnetic detection system circuits.
作者
乔流
刘丽华
耿智
刘雷松
Qiao Liu;Liu Lihua;Geng Zhi;Liu Leisong(Institute of Electronics, Chinese Academy of Sciences, Beijing 100190, China;School of Electronic, Electrical and Communication Engineering, University of Chinese Academy of Sciences, Beijing 100049, China)
出处
《电子测量技术》
2019年第11期28-33,共6页
Electronic Measurement Technology
基金
国家自然科学基金(41704177)资助
关键词
瞬变电磁
浅层探测
杂散电感
关断电流
transient electromagnetic
shallow detection
stray inductance
turn-off current
