关键词: 高速电机、双轴承结构、转速分配理论、长时工作

Abstract: To solve the problem that the bearings of high-speed motors cannot work for a long time,improves the motor structure and designs a double-bearing structure. The rotational speed of the motor rotor is shared by thelarge bearing and the small bearing. The rotational speed of the large bearing and the small bearing is reasonably distributed through the rotational speed distribution theory, indirectly affecting the actual working rotational speed of each bearing to achiove the nurnoc of increacin the achieve the purpose of increasing the working life of the bearing. To achieve long-term operation of the high-speed motor. The establishes a mathematical model of bearing speed distribution,determines the speed distribution values of the large and small bearings through theoretical analysis,then conducts speed measurement on the prototype to verify the correctness of the speed distribution theory,and analyzes the factors affecting the speed distribution. By changing these parameter values,the speed of the large and small bearings can be controlled,achieving long-term operation of high-speed motors.

Key words: high-speed motor, double bearing structure, speed distribution theory, long working hours