基于遗传算法的磁聚焦线圈阵列设计与场分布计算

提出了以平面和圆环面聚焦线圈阵列实现磁聚焦的方案.使用经过改进的自适应遗传算法对注入阵列各子线圈电流的大小和相位进行了优化,在目标区域内较好地实现了磁聚焦.通过计算,显示了线圈阵列在优化后的电流组态下产生的磁场在计算区域内的归一化幅值分布和二维等高线图,表明了聚焦线圈阵列可在目标区域产生具有良好聚焦性能的磁场分布,并具有可同时聚焦至多个靶目标的能力.

Design and field calculation of coil array for magnetic focus based on genetic algorithm

In order to get the magnetic field distribution with an ideal focusing capability, schemes of coil array in plane and torus shape are presented in this paper. Then, an improved adaptive genetic algorithm (AGA) is used to optimize the value and phase of the current infused into each coil. Based on the (calculated) results of the optimized current configurations, an ideal focusing capability is drawn as contour lines and 3-D mesh charts of magnitude of magnetic field within the calculation area. It shows that the coil arrays have good capabilities to establish focused shape of magnetic distribution. In addition, it also shows that the coil arrays have the capability to focus on two or more targets simultaneously.