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Magnetic field analysis of a hybrid excitation multi-degree-of-freedom spherical motor.
- Source :
-
Review of Scientific Instruments . 11/1/2022, Vol. 93 Issue 11, p1-10. 10p. - Publication Year :
- 2022
-
Abstract
- A hybrid excitation multi-degree-of-freedom spherical motor (HE-MDOFSM) is designed, which can achieve MDOF motion by cooperatively controlling the excitation current in 12 sets of stator windings. The designed motor has the advantages of high power density and a large motion range. In addition, because the designed motor has an irregular three-dimensional (3D) structure, it is difficult to perform dynamic magnetic field calculations with existing methods. To solve this problem, we propose a modified 3D dynamic magnetic equivalent circuit (3DD-MEC). The proposed method establishes a node network according to the structural edge features of the motor core and the permanent magnet and calculates the reluctance of the connecting branch based on the differential principle. Moreover, a connection strategy of air-gap nodes in 3D space is formulated, and the magnetic saturation characteristics of the iron core are reflected by an iterative calculation of magnetic permeability. Using the 3DD-MEC method, the 3D dynamic magnetic field information of the HE-MDOFSM can be quickly and accurately calculated. Finally, the reliability of the method is verified by simulation and experiment, which provides a reference for improving the design optimization efficiency of HE-MDOFSM. [ABSTRACT FROM AUTHOR]
Details
- Language :
- English
- ISSN :
- 00346748
- Volume :
- 93
- Issue :
- 11
- Database :
- Academic Search Index
- Journal :
- Review of Scientific Instruments
- Publication Type :
- Academic Journal
- Accession number :
- 160542781
- Full Text :
- https://doi.org/10.1063/5.0122450