Torque Analysis of Rotating Target De-tumbling Based on Finite Element Method

The modeling of de-tumbling torque for rotating target is crucial for revealing the physical mechanism of electromagnetic-eddy current de-tumbling. Existing de-tumbling torque models are limited by the type of magnetic field and distance requirements, leading to insufficient applicability. Therefore, this paper proposes a target axial segment de-tumbling torque model based on the finite element method (FEM), which is applicable to different distances and DC/AC excitation. First, the structure of the detumbling device is introduced. Then, an accurate finite element model and a target axial segment detumbling torque model are established. Next, the characteristics of the torque model under different distances and DC/AC excitation are studied. Finally, the accuracy of the proposed de-tumbling torque model is validated using the virtual work method.