摘要
分析了三维永磁磁场的磁矢量位(A)算法与标量位(Ψ)算法的优缺点 ,提出了在铁磁区域用磁矢量位、在非铁磁区域用标量位作为求解变量的A -Ψ方法 .开发了集A ,Ψ ,A -Ψ三种求解方法于一体的有限元计算软件 ,并用于永磁式MRI主磁场的设计计算中 ,计算结果与实测结果进行比较表明A -Ψ法为最佳 .
The A-Ψ method and its finite element formulation used in computation of 3D permanent magnetic field are presented The software package including A ,Ψ and A-Ψ methods is developed and used to calculate the main magnetic fields in MRI system Comparing the calculating results of the three methods with the test respectively , the A-Ψ is the best
出处
《河北工业大学学报》
CAS
2000年第5期6-9,共4页
Journal of Hebei University of Technology
关键词
三维永磁磁场
A-ψ方法
有限元
磁共振成像
软件包
D Permanent magnetic field
A-Ψ method
finite element
MRI system
software package
