Research on Analytical Model of Magnetic Torques Between Magnetic Tubes

The magnetic drive equipment has advantages such as static sealing, overload protection and environmental friendliness, and its application is becoming increasingly widespread. Magnetic forces and torques between permanent magnets are the focus of the research on the magnetic drive technology. At present, many studies focus on establishing analytical models with three or four degrees of freedom to solve magnetic torques, but their applications have certain limitations. Based on the theory of the equivalent magnetic charge, a five degrees of freedom magnetic torque analytical model was established between circular magnets, and the influences of factors such as relative displacement, eccentricity, and angle on the magnetic torque were analyzed. This model can solve magnetic torques of two axially magnetized magnetic tubes at any relative position and posture. This study provides reference for the research and application of the magnetic drive equipment.