Simulation analysis of electromagnetic noise of shaftless rimless thruster

In this paper, the shaftless rimless propulsion motor is taken as the research object, and the modal analysis of the stator in free state and constrained state is carried out by using the finite element method. The electromagnetic force is solved by numerical method, and then it is loaded on the stator. The harmonic response analysis of the stator is carried out, and the acceleration and displacement frequency response diagrams of the stator surface are obtained, and the vibration nephogram of the stator is analyzed. The results show that the acceleration and displacement in the radial direction are greater than those in the axial direction, which indicates that the vibration frequency in the radial direction is greater than that in the axial direction under the excitation of the radial electromagnetic force. When the frequency of the radial electromagnetic force is close to the natural frequency of the motor, the motor resonates and the vibration frequency increases.