关键词: 磁悬浮电机, 三段式转子, 临界转速, 不平衡响应, 模态试验

Abstract: In order to solve the dynamics analysis problem of the three-stage rotor of high-speed magnetic levitation motor, the modeling of the three-stage rotor, the calculation of modal vibration pattern, the Campbell diagram solving, the unbalanced response analysis were completed based on the finite element simulation platform of Workbench. The influence of key factors on the dynamic characteristics of the three-stage rotor was summarized and discussed, and the rationality of the rotor modeling was verified by modal test. The error between the simulation results and the experimental results was within 5%, which proves the reliability of the modeling and analysis methods, and provides theoretical reference for the further optimization design and unbalanced response suppression of similar rotors applied to high-speed magnetic levitation motors.

Key words: magnetic levitation motor, three-stage rotor, critical speed, unbalanced response, modal test