Electromagnetic Characteristics and Modal Analysis of Multi-DOF Motors With Air-Floation

In this paper, based on the multi-DOF motor, the structure is optimized and gas lubricated bearings are added, and the structure of the multi-of motor is proposed. Firstly, the basic structure and working principle of the motor are described. Through the analytical calculation and frequency decompos...

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Bibliographic Details
Published in:IEEE access 2022, Vol.10, p.53164-53174
Main Authors: Li, Zheng, Liu, Libo, Xing, Xuanxuan, Yan, Zhibang, Liu, Yu, Sun, Hexu
Format: Article
Language:English
Subjects:
AC motors
Air gaps
Coils
Degrees of freedom
Electromagnetic forces
Electromagnetic properties
Electromagnetics
finite element analysis
Finite element method
Gas bearings
gas lubrication
Magnetic fields
Mathematical analysis
Modal analysis
Motors
Multi-DOF motor
Permanent magnet motors
radial electromagnetic force
Resonant frequencies
Rotors
Stators
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Summary:In this paper, based on the multi-DOF motor, the structure is optimized and gas lubricated bearings are added, and the structure of the multi-of motor is proposed. Firstly, the basic structure and working principle of the motor are described. Through the analytical calculation and frequency decomposition of the electromagnetic force, the magnetic density cloud diagram and the magnetic field vector diagram of the air-floating multi-DOF motor (AMM) at the rated speed are analyzed. The variation of radial electromagnetic force (REF) with horizontal circumferential space is solved. The changes of electromagnetic force under different deflection angles and different air gap distances are calculated. Through the modal analysis of the stator and rotor of the air floating multi-degree of freedom motor, the deformation under the natural frequency is obtained by using the finite element software, and the influence of the stator material on the modal analysis is explored. It provides new ideas for the design of multi-DOF motors.
ISSN:2169-3536
2169-3536
DOI:10.1109/ACCESS.2022.3175630