Spherical Magnetic Bearing With High Frequency and Dynamic Response

To remedy the limitations of the single winding magnetic resistance bearing with slow dynamic response in magnetically suspended control sensitive gyroscope (MSCSG), a novel double windings spherical magnetic resistance bearing with high frequency and dynamic response is presented. The construction of MSCSG is introduced, and the work principle of novel double windings spherical magnetic resistance bearing is analyzed. The mathematical model of novel magnetic bearing is established by the equivalent magnetic circuit method, and the actual design of novel magnetic bearing is carried out. The simulation results are verified by the finite element numerical method. The mathematical model of the novel magnetic bearingrotor control system is derived through rotor dynamics, and the simulation model of the control system is established to simulate the response speed of the novel magnetic bearing. The results show that the response speed of the novel double winding magnetic resistance bearing with high dynamic response is nearly twice as high as that of the single winding magnetic resistance bearing. The results are in high agreement with the design values, which of great significance in high precision suspension support of spacecraft inertial actuators.