Affiliations: [a] School of Electrical Engineering, Hebei University of Science and Technology, Shijiazhuang, China
Correspondence:
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Corresponding author: Zheng Li, School of Electrical Engineering, Hebei University of Science and Technology, Yuxiang Street No. 26, Shijiazhuang 050018, China. Tel.: +86 31181668722; E-mail: lizheng@hebust.edu.cn
Abstract: In view of the fact that the transmission mode of the multi-DOF motor hinders its further development, the gas bearing is applied to the multi-DOF motor to form a new structure of the multi-DOF motor with air-floation (AMM). AMM not only improves the motor’s motion characteristics and transmission performance, but also basically does not cause environmental pollution. AMM uses porous static pressure gas bearing as the support structure, and completes the multi-DOF movement by controlling the energizing strategy of the coils. This paper introduces the structure of AMM, analyzes the basic working principle of AMM, and solves the air gap magnetic field; the kinematics model of the motor is established, the motion of the motor is controlled with the help of virtual simulation software, and the motion trajectory of the motor is obtained through the marked points of the output shaft. Finally, the AMM was verified by experiments, the error of experiment and simulation was controlled at 5%, and the kinematics characteristics of the motor met the design requirements. The research results provide a new idea for the development of multi-DOF motor.
Keywords: Multi-DOF motor, gas bearing, finite element analysis, electromagnetic calculation, motion characteristics
