一种新型杆式行波型超声电机的研究  

Investigation of a New Bar-Type Traveling Wave Ultrasonic Motor

作　　者：马相林[1] 黄卫清[1] 赵淳生[1] 

机构地区：[1]南京航空航天大学超声电机研究中心,南京210016

出　　处：《机械科学与技术》2004年第9期1030-1032,1036,共4页Mechanical Science and Technology for Aerospace Engineering

基　　金：国家自然科学基金重点项目 ( 5 0 2 3 5 0 10 )资助

摘　　要：以提高新型杆式超声电机转速、负载能力和能量转换效率为目标 ,对电机定子、转子的结构和接触模型进行了研究。以有限元分析计算为基础提出了新的电机定子结构 ,使定子在定子、转子接触面处的振幅加大 ;提出并应用了柔性转子的概念 ,使定子、转子在接触面上的径向相对滑动大为减小。用实验方法对电机机械性能进行了测试和分析 ,得出电机定子 (兰杰文振子 )的预压力以 2 0 0 0N左右为佳 ,定、转子间最佳的预压力 35N。实测工作频率为 38.7kHz时 ,无负载转速为 2 2 5r/min ,堵转力矩为 4 2N·m 。In order to increase the new bar-type ultrasonic mo tor′s rotating speed, load capacity and energy conversion efficiency, we studie d the structure of the motor′s stator and rotor and the contacting model of the motor′s stator with finite-element analysis and calculation. We proposed a ne w stator structure to amplify the vibration amplitude of the stator on the conta cting surface of the stator and the rotor. The idea of flexible rotor is present ed for decreasing slide friction on the contacting surface of the stator and the rotor. Some mechanical characteristics parameters are experimentally investigat ed. We conclude that the suitable value of force which presses the stator compon ents together is about 2000 N and the force which presses the stator and the rot or is about 35 N. Under the above condition, the operating frequency is 3 8.7 kHz and its rotation speed is 225 r/min without load and the maximal t orque is 42 N·m.

关 键 词：超声电机 弯曲振动 杆式行波型超声电机 电机设计 

分 类 号：TM356[电气工程—电机]