无槽铁心锂基润滑脂高速微型电动机  

High-Speed Micromotor of Non-Groovy Ferromagnetic and Lithium Group Lubricant

作　　者：郑卜祥[1,2] 陈志华 贺伟[1,4] 唐苏学[1] 

机构地区：[1]西安机电信息技术研究所,陕西西安710065 [2]西安交通大学,陕西西安710049 [3]西安三才微电机有限公司,陕西西安710065 [4]西安邮电学院,陕西西安710121

出　　处：《微特电机》2012年第12期38-41,45,共5页Small & Special Electrical Machines

摘　　要：高速微型电动机很难同时实现小体积、高转速、小功率、小温升、低噪声且高低温环境适应性良好,针对该问题,研制了一种用于高速扫描成像型激光近炸引信的微型电动机。采用无槽铁心永磁无刷直流电动机结构和一种特殊锂基润滑脂耐低温高速轴承,外形尺寸仅为Φ23 mm×50 mm,额定电压为36 V,额定功率为25 W,额定效率约70%,额定输出转矩可达4.5×10-3N.m。高低温环境性能试验表明,该高速微型电动机运行平稳可靠,温升小、噪声低,具有良好的高低温环境适应性;在60 000 r/min的高速下连续工作2小时后,常温下温升不超过55℃,噪声不超过72 dB;能在-55℃～+85℃的温度环境下正常工作。It is difficult for the high-speed mircomotor to achieve coexistent small size, high speed, small power, small temperature rise, low noise and good adaptability of high- low temperature environment. A micromotor for high-speed scanned imaging laser proximity fuze was developed for this problem. A structure of non-groovy ferromagnetic permanent magnet brushless DC motor and a cryogenic bearing of special lithium group lubricant were introduced. The shape size was 23 mmx50 mm,the rating voltage was 36 V and the rating power was 25 W. The rated efficiency was about 70% ,and the rated output torque reaches 4.5 x 10-3 N m. The experiment of high-low temperature environment performance was conduc- ted. The results show that the high-speed micromotor is stable and reliable operation,low temperature rise,low noise and it has a good adaptability of high-low temperature environment. At room temperature, the high-speed micromotor has been op- erated continuously at high speed of 60 000 r/min for two hours, the temperature rise did not exceed 55℃, the noise was less than 72 dB. The high-speed micromotor can be normally operating at -55℃ ＋85℃ temperature environment.

关 键 词：微型电动机 激光引信 无刷直流电动机 无槽铁心 锂基润滑脂 

分 类 号：TM381[电气工程—电机] TM361