Solving Large-Scale Inverse Magnetostatic Problems using the Adjoint Method

• DOI: 10.1038/srep40816
• Publication Date: 2017-01-18T14:35:12Z
• Authors: Florian Bruckner; Claas Abert; Gregor Wautischer; Christian Huber; Christoph Vogler; Michael Hinze; Dieter Suess
• Keywords: 0103 physical sciences; FOS: Physical sciences; 02 engineering and technology; Computational Physics (physics.comp-ph); 0210 nano-technology; Physics - Computational Physics; 01 natural sciences; Article

AbstractAn efficient algorithm for the reconstruction of the magnetization state within magnetic components is presented. The occurring inverse magnetostatic problem is solved by means of an adjoint approach, based on the Fredkin-Koehler method for the solution of the forward problem. Due to the use of hybrid FEM-BEM coupling combined with matrix compression techniques the resulting algorithm is well suited for large-scale problems. Furthermore the reconstruction of the magnetization state within a permanent magnet as well as an optimal design application are demonstrated.