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目的设计高效的优化算法,获得最佳聚焦能力的电流组合方式,改善聚焦线圈产生磁场的聚焦性能。方法构建5线圈阵列和7线圈阵列,提出混合粒子群和模拟退火优化算法,对通入线圈的电流组态进行优化求解。利用COMSOL与MATLAB联合仿真计算,对比了优化前后磁场聚焦效果。结果同一聚焦平面磁场分布图表明,所提混合算法能够实现良好聚焦性,利用COMSOL和MATLAB联合仿真,提高了优化准确性。结论本文所提出的混合算法以及联合仿真的方法,可以有效提高线圈阵列的聚焦性,为下一步线圈阵列的设计奠定了基础。
Objective To design an efficient optimization algorithm to obtain the best focusing ability of the current combination to improve the focusing performance of the focusing coil to generate the magnetic field. Methods Five coil arrays and seven coil arrays were constructed. Hybrid particle swarm optimization and simulated annealing optimization algorithm were proposed to optimize the current configuration of the coil. Using COMSOL and MATLAB co-simulation calculation, the focusing effect of the magnetic field before and after optimization was compared. Results The same focal plane magnetic field distribution map shows that the proposed hybrid algorithm can achieve good focusing. The COMSOL and MATLAB co-simulation are used to improve the optimization accuracy. Conclusion The proposed hybrid algorithm and co-simulation method can effectively improve the focus of the coil array, which lays the foundation for the design of the coil array in the next step.