基于遗传算法的瞬变电磁法线圈阵列优化设计

为解决瞬变电磁检测技术遇到地底干扰物时在探测精度方面的不足,从载流直导线出发,利用磁场矢量叠加原理,计算单个正三角形空间磁场分布,设计了一种正三角形发射线圈阵列。为得到更好的磁聚焦特性,利用遗传算法对线圈阵列的具体参数进行优化。仿真结果表明:87.5%及以上的磁场能量集中在半径0.113m的特定区域内。说明该线圈阵列在较小目标区域实现了聚焦,具有良好的聚焦性,可以应用在瞬变电磁检测技术发射回线中。

Optimization Design of Coil Array for Transient Electromagnetic Method based on Genetic Algorithm

In order to solve the transient electromagnetic detection technology detection inaccuracy problem with un- derground distractors, this paper starts to straight current-carrying conductor, with the magnetic field vector super- position principle, calculates the equilateral triangle space magnetic field distribution and designs a kind of equilateral triangle transmitter coil array. To get better focus features, genetic algorithm was used to optimize specific parame- ters of coil array. Results show that： 87.5 % or more magnetic energy concentrates within a particular area of the ra- dius 0. 113m. So the coil array can focus in small target area and has well focus performance, which can be used in the sending back line of transient electromagnetic detection technology.