Maglev Switch Magnetic Resistance Spherical Motor Structure Design And Three Dimensional Magnetic Field Analysis

With the development of the modern industrial technology, magnetic suspension technology and multi-degree of freedom movement organizations attracted more and more attention. Combined with the development of magnetic suspension technology and MDOF motor, this essay promotes a new style bearingless magnetic suspension spherical SRM. It is not suitable to copy the research method and experience of the traditional SRM indiscriminately. The research on the magnetic suspension SRM is a pioneering study and advanced subject. Now the motor is in the theory exploration stage. The main research contents are limited on the motor’s magnetic model, kinematics and dynamics analysis.The magnetic suspension SRM is a typical Mechatronic system, which has advantages of simple structure, small volume, light weight and high torque etc. The main contribution of this paper can be discussed as follows:1. Introduce the current situation and trend of the motors’ development with MDOF, come up with the research direction for the magnetic suspension spherical SRM.2. Study the pole distribution rules of the magnetic suspension SRM. Propose the pole distribution rules by using the principle of approximate equilateral distribution and polyhedron spherical distribution.3. By using the Laplace equation and correct boundary condition, the magnetic field is formulated. Deduce the electromagnetic torque and levitation force formula of the motor which is a reliable theory for the finite element calculation.4. Design the structure of the magnetic suspension spherical SRM from the mechanical and electromagnetic sides, optimize the structure of the motor.5. The basic principle for calculating the motor’s magnetic field by3D FEM is described, analysis the magnetic field of the air gap when the thicknesses of the rotor poles are different. After the optimization of motor structure, radial force, electrical-magnetic torque, inductance and flux of the motor working in a cycle are analyzed employing the FEM by using ANYSYS software. The motor’s electrical-magnetic design is verified by the results of simulation and theoretical calculation.6. Design the test platform which is a single degree of freedom and provide a reliable test condition for the magnetic suspension spherical SRM.