纵弯模式驻波直线超声波电动机原理与设计  

Principle and Design of Compound Longitudinal and Bending Mode Linear USMs

作　　者：乔木[1] 张辉[1] 姜晓玉[1] 郑文灿[1] 洪尚任[1] 

机构地区：[1]华侨大学,福建泉州362021

出　　处：《微特电机》2010年第12期18-20,共3页Small & Special Electrical Machines

摘　　要：提出了一种基于薄板面内振动的纵弯模式驻波直线超声波电动机。利用定子一阶纵振和二阶弯振的复合振动使得定子驱动足上质点的运动轨迹为椭圆,在两驱动头的上方紧压一直线导轨,驱动头的椭圆运动通过两者的接触表现为导轨的左右直线运动。讨论了该电机的驱动机理,并对电机的输出特性做了初步的实验研究。A linear ultrasonic motor was put forward.Elliptical motions of the surface points of the stator are generated by the superposition of longitudinal and bending modes of the oscillating structures.The rotor,which is linear slide,comes into contact with the stator by normal forces and is driven by frictional forces generated at the interface.In this way,microscopic small motions of the stator,induced by piezoelectric elements,are transferred to a macroscopic linear motion of the rotor.The principle and the characteristics of the motor were given.

关 键 词：直线超声波电动机 矩形薄板 面内振动 纵弯模式 驱动振子 

分 类 号：TM383[电气工程—电机]