Magnetic bearing design and analysis for structure optimization in real-time operation

With a two-axis active two-axial radial magnetic bearing (RMB) for magnetically suspended wheel (MSW) or magnetically suspended control moment gyroscope, it is possible to build and construct a magnetic bearing system for agile satellite applications (MSCMG). This bearing has an axial position stiffness that may be used in the axial direction, as well as tilting stiffness can be used to limit the rotor’s rotation when it is subjected to gyroscopic torque. To improvise these stiffness factors on both axial and radial bearings here we have studied an example by varying various stresses and deformations on the model designed in ANSYS. Radial magnetic bearing with bias permanent magnet is used to stabilize the rotation of the rotor in two directions that are orthogonal to the rotational direction. Traditional magnetic circuit methods are ineffective in assessing system performance because of the strong coupling between force and moment caused by the complicated distribution of flux density in the system.