关键词: 小型平面回转驱动器, 绕组匝数, 励磁电流, 转速, 人工心肺机

Abstract:

In view of the problems existing in the driving device of pumping blood in the mainstream artificial cardiopulmonary machine in the market at present, the structure is complex, the volume is large, and the complicated operation environment is easily disturbed. Based on the design principle and relevant experience formula of permanent magnet brushless DC motor, a small plane rotary driver with simple structure and small volume was designed according to the structure of mainstream blood pump in the market. In order to realize the blood demand of high speed pump, the single variable test of the number of turns and excitation current of stator windings has been carried out on the designed stator structure, and the influence of the number of turns and the magnitude of excitation current on the running speed has been explored. The results show that the running speed of the small planar rotary actuator increases with the increase of winding turns or excitation current, and the running speed satisfies a certain functional relationship with the number of winding turns and the excitation current.

Key words: small planar rotary actuator, winding turns, exciting current, rotational speed, artificial cardiopulmonary machine