磁铁
有限元法
粒子群优化
磁场
哈尔巴赫阵列
同质性(统计学)
同种类的
材料科学
核磁共振
物理
计算机科学
声学
计算物理学
机械工程
工程类
统计物理学
算法
热力学
机器学习
量子力学
作者
Yiyuan Cheng,Ming‐Yang Su,Tao Hai,Ming Hui,Bao-lei Li,Ling Xia
标识
DOI:10.47037/2020.aces.j.360509
摘要
Halbach array magnets are widely used in portable nuclear magnetic resonance (NMR) devices that the homogeneity of the magnetic field generated by the array affects the imaging quality. In this paper, we propose some improvements to the construction of the Halbach magnets to enhance magnetic field uniformity. Using a Halbach array model comprising 16 magnets, all the calculations are based on 3D finite element method (FEM) analysis and optimized using the particle swarm optimization (PSO) algorithm. Comparisons of the results are shown to support the observations that the optimized and improved constructions can generate a more homogeneous magnetic field.
科研通智能强力驱动
Strongly Powered by AbleSci AI